Keith Warren
23Patents
10h-index
24Co-inventors
75Inventor score
Filing activity: Apr 22, 1983 → Feb 11, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4522072A | Electromechanical transducer strain sensor arrangement and construction | Physics | 72 | Expired |
| US5840199A | Method for purging a multi-layer sacrificial etched silicon substrate | Physics | 68 | Expired |
| US5503285A | Method for forming an electrostatically force balanced silicon accelerometer | Physics | 46 | Expired |
| US5476819A | Substrate anchor for undercut silicon on insulator microstructures | Physics | 42 | Expired |
| USD500411S1 | Fabric | General | 33 | Expired |
| US5142921A | Force balance instrument with electrostatic charge control | Physics | 21 | Expired |
| US5006923A | Stackable multilayer substrate for mounting integrated circuits | Electricity | 20 | Expired |
| US5446616A | Electrode structure and method for anodically-bonded capacitive sensors | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5850042A | Electrostatically force balanced silicon accelerometer | Physics | 13 | Expired |
| US5497660A | Digital force balanced instrument | Physics | 10 | Expired |
| US10036118B2 | Wire element arrangement in an energy recovery device | Textiles; Paper | 9 | Active |
| US5094969A | Method for making a stackable multilayer substrate for mounting integrated circuits | Emerging Cross-Sectional Technologies | 7 | Expired |
| US9382706B2 | Method of retrofitting a building | Emerging Cross-Sectional Technologies | 3 | Active |
| US9074366B2 | Method of retrofitting a building | Emerging Cross-Sectional Technologies | 1 | Active |
| US10563640B2 | Optimised diametric contraction of a SMA element for use in an energy recovery device | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US12140346B2 | System and method for work recovery in a heat pump | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US12298450B2 | Shape memory alloy heat pump | Physics | 0 | Active |
| US12072125B2 | System and method for maximising heat output and temperature delta in a SMA heat pump/refrigeration system | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US9995289B2 | Bundle holder for use in an energy recovery device | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10288049B2 | Method and system for efficiency increase in an energy recovery device | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US12276266B2 | Engine operating using a compression SMA material | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US12085315B2 | Elastocaloric heat recovery in a heat pump / refrigeration system using a pump mechanism | Emerging Cross-Sectional Technologies | 0 | Active |
| US9885344B2 | Energy recovery device | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.