Company patents
CARL FREUDENBERG KG
Carl Freudenberg KG's patent strategy reveals a surprising shift away from its largest category, Domestic Cleaning Devices, which saw an 18.2% decline in patenting so far in 2026, despite representing 22.5% of its portfolio. Concurrently, the company is rapidly emerging in Batteries & Fuel Cells, with a remarkable 120.0% growth in 2025, and an even more pronounced focus on Cleaning Processes, which surged by 300.0% so far in 2026, indicating a strategic pivot towards industrial cleaning and energy storage technologies.
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.
191 US filings (since 2023) · 10 categories · 22 themes
Design and material innovations for specific cleaning components or attachments, such as brush rolls, mop pads, scrapers, or multi-functional surface tools. These are often tailored for particular surfaces, debris types, or cleaning tasks to enhance effectiveness.
Innovations in vacuum cleaner components and systems for efficiently separating, compacting, and containing collected dust, dirt, or lint. This often involves multi-stage filtration, cyclonic separation, or specialized disposal mechanisms to improve air quality and ease of maintenance.
Systems and mechanisms that allow autonomous cleaning robots or devices to return to a base station for automated tasks such as mop washing, dustbin emptying, fluid replenishment, or cleaning of tool heads without human intervention.
Design features and accessories that improve the installation, storage, usability, and overall user experience of household cleaning appliances and manual tools. This includes mounting brackets, ergonomic handles, and integrated storage solutions.
Membrane and depth filtration for industrial separation, gas purification, and bioprocess clarification including cross-flow, dead-end, tangential flow filtration, and oil/water separation.
Techniques for combining multiple materials or layers, often with specialized surface treatments, coatings, or assembly methods, to create functional or aesthetically enhanced plastic articles, including consumer goods and encapsulated electronics.
Development and application of textile materials with engineered properties such as waterproofing, thermal regulation, anti-cling, structural coloration, or enhanced filtration capabilities for specific performance needs.
Polymer compositions incorporating inorganic or organic filler materials to impart specific functional properties such as thermal conductivity, flame retardancy, electrical conductivity, or enhanced mechanical strength and dimensional stability.
Systems for storing, heating, pumping, and precisely dispensing water or cleaning solutions within domestic appliances or cleaning tools. This includes cartridge-based systems, dissolvable cleaning agents, and controlled fluid delivery for optimal cleaning performance.
Focuses on the structural integrity, housing, mounting, and physical integration of battery cells into robust and protected packs within electric vehicles, including manufacturing considerations.
Software, algorithms, and associated hardware for monitoring, controlling, and optimizing battery performance, safety, and lifespan, including charge/discharge cycles, thermal regulation, and system integration.
Additives that enhance a polymer's resistance to thermal degradation, high temperatures, or ignition, including flame retardants and heat stabilizers for improved safety and durability.
Processes and apparatus for disassembling spent batteries and recovering valuable materials (e.g., metals, electrolytes, plastics) through mechanical, chemical, or electrochemical methods for reuse or sustainable disposal.
Substances incorporated into polymer systems to control or enhance adhesive properties, cross-linking reactions, or processing characteristics such as mold release and flow.
Mechanisms and control systems for precisely moving valve elements, often involving electric motors, cams, solenoids, or pneumatic/hydraulic pilots, to achieve desired flow or position.
Slurry compositions and coating processes for battery electrodes, including binder/active-material slurries, surface coating layers, and electrode-to-foil adhesion for cathode and anode.
Valves engineered to automatically open or close based on pressure differentials, preventing over-pressurization, controlling flow direction, or suppressing backflow in fluid systems.
Development and application of polymer compositions designed for reprocessability, recyclability, or incorporating sustainable additives, often featuring reversible bonds or bio-based components.
Processes involving the application of heat and pressure to shape thermoplastic or elastomeric materials, often using molds or presses, to achieve specific forms or material properties.
Specialized valve designs for domestic and commercial applications involving water distribution, temperature control, and air conditioning, often focusing on integration, materials, and specific flow characteristics.
Multi-layered materials incorporating fiber layers (e.g., carbon, non-carbon, fabric, mesh) within a polymer or ceramic matrix to achieve enhanced mechanical properties such as strength, stiffness, impact resistance, or tailored hardness for demanding structural applications.
Polymer compositions engineered for enhanced heat resistance, thermal stability in molten states, or improved processability at high temperatures, often involving specific copolymers, blends, or stabilizing additives for applications in electronics or automotive.
Patents
Showing 1-10 of 39
Advanced Debris Collection & Filtration