Company patents

Lam Research Corporation

Lam Research Corporation demonstrates a strong and consistent focus on core semiconductor technologies, with Semiconductor Manufacturing Process and Electron / Ion Tubes & Discharge each accounting for over 50% of its patent portfolio. While these core areas saw significant growth in 2025 (e.g., Electron / Ion Tubes & Discharge grew by +46.7% YoY), the company also shows an emerging interest in Photolithography, which experienced an impressive +80.0% YoY growth in 2025, indicating a strategic push into advanced patterning techniques, despite the partial data for 2026 showing a decrease across most categories.

Patent Trend by Technology Area

Yearly patent publications since 2023

Product themes

Product-level themes inferred from filings since 2023, with category chips showing where each theme appears. Select a theme to filter the patents below.

1,523 US filings (since 2023) · 12 categories · 38 themes

RF Plasma Power Delivery is up +52.6% YoY. Worth a look.
Advanced Etching & Patterning Control

Techniques for precise material removal, pattern shaping, and controlling etch selectivity or uniformity, often involving plasma, wet chemistry, or directed beams to achieve desired features on semiconductor substrates.

Semiconductor Manufacturing Process
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499since 2023
+35.8%YoY
Plasma Process Chamber Engineering

Design and control of plasma processing chambers, including heating, gas delivery, electrode configurations, and magnetic field control for uniform and efficient material processing in semiconductor manufacturing.

Electron / Ion Tubes & Discharge
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498since 2023
+49.0%YoY
Wafer Handling and Process Environment Control

Systems and methods for automated substrate transport, precise positioning, temperature regulation, and chamber environment management to ensure process stability, uniformity, and yield in semiconductor manufacturing.

Semiconductor Manufacturing Process
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483since 2023
+40.7%YoY
RF Plasma Power Delivery

Systems and methods for delivering radio frequency (RF) power to plasma processing chambers, including impedance matching, pulse shaping, and feedback control for stable and efficient plasma generation.

Electron / Ion Tubes & Discharge
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328since 2023
+52.6%YoY
Substrate Patterning & Processingfiltered

Methods and equipment for applying photoresist uniformly onto wafers, forming patterns through various exposure techniques (e.g., direct imaging, multi-exposure), and integrating patterned layers into semiconductor structures or packaging.

Photolithography
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267since 2023
+38.6%YoY
Advanced Deposition Chamber Hardware

Design and engineering of specialized components within deposition systems, such as heaters, targets, susceptors, and chamber walls, to achieve precise control over process parameters like temperature, material flux, and plasma characteristics.

Coating & Surface Treatment
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251since 2023
+45.1%YoY
Conformal & Selective Film Deposition

Methods for depositing thin films with controlled conformality, thickness, and material properties, including selective deposition on specific areas, often using atomic layer deposition (ALD), chemical vapor deposition (CVD), or epitaxial growth.

Coating & Surface TreatmentSemiconductor Manufacturing Process
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211since 2023
+49.1%YoY
Precision Substrate and Wafer Cleaning

Specialized cleaning techniques and apparatus designed for removing microscopic contaminants, residues, or films from sensitive substrates, such as semiconductor wafers or flat panel displays, often involving chemical, mechanical, or plasma-based methods.

Cleaning Processes
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109since 2023
+23.3%YoY
In-situ Coating Process Diagnostics

Methods and systems for real-time monitoring and control of coating processes or chamber cleaning, utilizing sensor data (e.g., thermal, pressure, optical) and predictive models to ensure quality and optimize efficiency.

Coating & Surface Treatment
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76since 2023
+138.5%YoY
Ion Implantation Control & Metrology

Methods and apparatus for precise wafer positioning, ion beam uniformity, and dose monitoring during ion implantation processes in semiconductor device manufacturing.

Electron / Ion Tubes & Discharge
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54since 2023
+109.1%YoY
Advanced Mask Technologies

Innovations in the design, materials, and manufacturing of lithography masks, including reflective masks, programmable masks, and defect mitigation strategies, to enable finer feature patterning and process control.

Photolithography
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53since 2023
+200.0%YoY
Temporary Wafer Bonding & Debonding

Methods for temporarily attaching a wafer or substrate to a carrier for thinning, dicing, or other processing, followed by controlled debonding, often using light-sensitive resins, temporary adhesives, or roughened interfaces.

Semiconductor Manufacturing Process
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51since 2023
+46.2%YoY
Advanced Photoresist Materials

Development of novel chemical compositions for photoresists, including polymers, sensitizers, and crosslinking agents, to achieve improved lithographic performance such as resolution, sensitivity, line edge roughness, and etch resistance.

Photolithography
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31since 2023
+44.4%YoY
Wafer Bonding & Stacked Device Inspection

Inspection and testing methods specifically designed for wafers before, during, or after bonding processes, including verification of bonding surfaces, alignment, and defect detection in multi-wafer or stacked die assemblies.

Semiconductor Testing
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30since 2023
+10.0%YoY
In-situ Process Monitoring

Techniques and systems for real-time or near-real-time measurement and adjustment of semiconductor manufacturing parameters (e.g., temperature, etch rate, ion beam uniformity) to ensure process quality and consistency.

Semiconductor Testing
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29since 2023
-25.0%YoY
Vacuum System & Chamber Evacuation

Techniques and apparatus for achieving and maintaining vacuum conditions within charged particle and plasma processing chambers, including pump control, vacuum degree monitoring, and chamber sealing.

Electron / Ion Tubes & Discharge
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29since 2023
-36.4%YoY
3D Die Stacking & Vertical Interconnects

Techniques for stacking multiple semiconductor dies or active layers vertically to achieve higher density and shorter interconnections, often utilizing through-silicon vias (TSVs) or other vertical conductive paths like through-hole electrodes.

Memory Devices (Structural)Semiconductor Packaging & Encapsulation
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26since 2023
-83.3%YoY
AM Process Monitoring & Control

Systems and methods for real-time sensing, modeling, and closed-loop control of additive manufacturing parameters to ensure part quality, consistency, and process efficiency. This includes thermal management, atmospheric regulation, and precise material deposition.

Industrial Control Systems
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25since 2023
0.0%YoY
EUV Lithography Systems

Components, processes, and methods specifically designed for Extreme Ultraviolet (EUV) lithography, including light sources, reflective optics, masks, pellicles, and contamination control mechanisms.

Photolithography
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23since 2023
+71.4%YoY
Advanced Memory Cell Structures

Focuses on the physical design, materials, and manufacturing processes for individual memory cells, including transistor structures, interconnects, and multi-layered (3D) architectures to enhance density and performance.

Memory Devices (Structural)
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19since 2023
-37.5%YoY
Advanced Material Characterization

Techniques and systems for precisely measuring electrical or electromagnetic properties of materials or components, often involving specialized resonators, waveguides, or multi-range measurement systems to ensure accuracy.

Electrical MeasurementSemiconductor Testing
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18since 2023
-80.0%YoY
Chemical Mechanical Planarization & Wet Surface Treatment

Processes involving chemical and mechanical forces to planarize surfaces (CMP) or wet chemical treatments for cleaning, etching, or material removal, often utilizing specialized compositions, nozzles, or fluid management systems.

Semiconductor Manufacturing Process
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15since 2023
0.0%YoY
Resistive & Phase Change Memory

Development of memory cells utilizing resistive switching or phase-change materials, including novel material compositions, multi-layered structures, and integration with selector devices like bipolar junction transistors, to achieve non-volatile storage.

Memory Devices (Structural)
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11since 2023
-42.9%YoY
Impedance Matching Networks

Circuits designed to transform the impedance of a source to match the impedance of a load, maximizing power transfer or minimizing signal reflections, often involving inductors, capacitors, and transformers.

Impedance Networks (Filters, Resonators)
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10since 2023
0.0%YoY
Integrated Filter Packaging

Methods and structures for encapsulating, interconnecting, and integrating impedance network components, particularly acoustic filters, into larger modules or systems.

Impedance Networks (Filters, Resonators)
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8since 2023
0.0%YoY
Lithography Metrology & Inspection

Techniques and apparatus for measuring critical dimensions, overlay accuracy, defect detection, and surface topography in lithographic processes, often involving optical, laser, or charged particle beams.

Photolithography
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7since 2023
-25.0%YoY
Semiconductor Electrical Test

Techniques and apparatus for electrically testing semiconductor devices, integrated circuits, or wafers during manufacturing or post-assembly, including built-in self-test (BIST) and contact reliability assessment.

Electrical Measurement
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7since 2023
-33.3%YoY
Package Thermal Management

Integrated solutions for dissipating heat generated by high-density semiconductor devices within the package, including embedded cooling structures, cold plates, and optimized fluidic channels.

Semiconductor Manufacturing Process
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5since 2023
+200.0%YoY
Optical & Image-based Metrology

Utilizing optical systems, cameras, and image processing algorithms for precise measurement of physical dimensions, alignment, defects, and features on semiconductor wafers or packages.

Semiconductor Testing
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5since 2023
-33.3%YoY
Charged Particle Beam Optics

Techniques and devices for generating, shaping, focusing, and deflecting electron or ion beams, often involving multi-pole lenses, deflectors, and aberration correction for applications like microscopy or processing.

Electron / Ion Tubes & Discharge
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4since 2023
-50.0%YoY
Motor System Fault Detection

Methods and systems for identifying anomalies, failures, or impending issues within electric motors or their associated drive and power management circuits, often by monitoring electrical or operational parameters.

Electrical Measurement
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4since 2023
-50.0%YoY
Wear & Corrosion Resistant Coatings

Application of protective layers to improve the durability and longevity of components by enhancing resistance to wear, oxidation, or chemical degradation in demanding operational environments.

Coating & Surface Treatment
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3since 2023
new
Advanced Package Interconnects

Novel electrical connection methods within or between package components, including through-glass vias (TGVs), backside contacts, and optimized redistribution layers for improved signal and power integrity.

Semiconductor Packaging & Encapsulation
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3since 2023
new
Encapsulation Materials & Processes

Development and application of resin compositions, molding compounds, and underfill materials to protect semiconductor devices from environmental factors, moisture, mechanical stress, and for structural integrity.

Semiconductor Packaging & Encapsulation
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2since 2023
new
Acoustic Wave RF Filters

Devices utilizing piezoelectric materials to generate and filter acoustic waves, often for radio frequency applications, including surface acoustic wave (SAW) and bulk acoustic wave (BAW) structures.

Impedance Networks (Filters, Resonators)
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2since 2023
n/a
Digital Twins & Blockchain for Assets

Creating virtual representations (digital twins) of physical industrial assets or processes for simulation and analysis, often combined with blockchain technology for secure data traceability and distributed control.

Industrial Control Systems
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1since 2023
new
Predictive Maintenance & Anomaly Detection

Utilizing sensor data, historical performance, and analytical models to anticipate equipment failures, diagnose faults, and estimate remaining useful life, thereby enabling proactive maintenance and reducing downtime.

Industrial Control Systems
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1since 2023
n/a
Sensor and Component Surface Cleaning

Technologies for removing contaminants from critical surfaces of sensors, vehicle parts, or industrial components, often involving automated or semi-automated processes. This can include physical, acoustic, or fluid-based methods to maintain functionality.

Cleaning Processes
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1since 2023
n/a

Patents

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