Company patents
RINNAI CORPORATION
RINNAI CORPORATION's patent strategy reveals a surprising shift, with a significant decline in "Mixing" patents by 100.0% in 2025, despite it being 11.8% of their portfolio, only to see a resurgence so far in 2026. Concurrently, they are showing an emerging focus on consumer-oriented technologies, with "Kitchen Equipment" and "Domestic Cleaning Devices" both experiencing 100.0% year-over-year growth in 2026, indicating a potential diversification beyond their traditional manufacturing core.
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.
76 US filings (since 2023) · 6 categories · 10 themes
Novel designs and configurations for heat exchangers that improve heat transfer efficiency, compactness, or enable specific phase change or separation processes within refrigeration and heat pump cycles.
Techniques and structures within heat exchangers designed to enhance heat transfer efficiency by controlling and optimizing fluid flow, including baffle arrangements, jet impingement, and condensate management.
Design and optimization of fin structures, baffles, and surface textures within heat exchangers to increase heat transfer area, promote turbulence, or manage fluid flow for improved thermal performance.
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.
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.
Appliances and containers designed for specific cooking methods (e.g., air frying, sous vide), automated food preparation, or temperature-controlled storage and transport to maintain food quality.
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.
Devices and methods that utilize high-speed mechanical action, fluid impact, or cavitation phenomena to intensely mix, disperse, or treat fluids, often for emulsification, particle size reduction, or decontamination.
Valves specifically designed for managing fluid power in hydraulic or pneumatic systems, including components for pressure regulation, flow direction, and system centering.
Incorporating sensors and processing capabilities directly into valve systems to monitor operational state, detect malfunctions, measure flow parameters, or verify proper installation.
Patents
Showing 1-10 of 20
Internal Flow Path Optimization