John G. Walker
29Patents
9h-index
3Co-inventors
68Inventor score
Filing activity: Jan 29, 1982 → Mar 18, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD533336S1 | Orthotic shoe insert | General | 76 | Expired |
| US4398444A | Plectrum | Physics | 49 | Expired |
| US4495972A | Automatic tie gun | Emerging Cross-Sectional Technologies | 38 | Expired |
| USD498043S1 | Orthotic insert for shoes | General | 28 | Expired |
| US6976322B1 | Molded orthotic insert | Human Necessities | 22 | Expired |
| US4640319A | Automatic tie gun | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4543899A | Self-trimming sailset | Performing Operations; Transporting | 16 | Expired |
| US7195251B2 | Item of footwear | Human Necessities | 15 | Expired |
| US4563970A | Sail with retractable air directing element | Performing Operations; Transporting | 10 | Expired |
| US5622131A | Compact self-trimming wingsail | Performing Operations; Transporting | 8 | Expired |
| US4467741A | Sail arrangements | Performing Operations; Transporting | 8 | Expired |
| US4982679A | Wingsail flap torque equalization | Performing Operations; Transporting | 7 | Expired |
| US4473023A | Relating to wingsail craft and wingsails therefor | Performing Operations; Transporting | 7 | Expired |
| USD324021S | Sail boat | General | 7 | Expired |
| US10711432B2 | Method and apparatus for forming a trench in a sea floor | Fixed Constructions | 7 | Active |
| US4856449A | Wingsail stalling | Performing Operations; Transporting | 7 | Expired |
| US9074524B2 | Air supply system with two-stage roots blower | Emerging Cross-Sectional Technologies | 6 | Active |
| US4770113A | Wingsail systems | Performing Operations; Transporting | 6 | Expired |
| US5575233A | Monoplane and low thrust wingsail arrangements | Performing Operations; Transporting | 5 | Expired |
| US11613870B2 | Apparatus for locating elongate object in a trench in a floor of a body of water | Electricity | 4 | Active |
| US4945847A | Wingsail flap deflection system | Performing Operations; Transporting | 4 | Expired |
| US6966416B2 | Conveyor system | Performing Operations; Transporting | 3 | Expired |
| US4610213A | Pressure sensing on rigid sails | Physics | 3 | Expired |
| US5076421A | Sprocket clutch | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US5253193A | Computer method and apparatus for storing a datum representing a physical unit | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.