John A. Walker
23Patents
9h-index
35Co-inventors
75Inventor score
Filing activity: Sep 10, 1974 → Jul 23, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4242763A | Pet toilet | Human Necessities | 35 | Expired |
| US4887819A | Casino board game | Human Necessities | 35 | Expired |
| US4237560A | Bidet system and water tank therein | Fixed Constructions | 34 | Expired |
| US4697001A | Chemical synthesis of conducting polypyrrole | Emerging Cross-Sectional Technologies | 33 | Expired |
| US9234874B2 | Dimensional stabilization of slab gel cassettes to prevent distortion caused by swelling gels | Physics | 21 | Active |
| US6991693B2 | Screen cloth insertion apparatus and method | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4093847A | Temperature control system for electric fluid heater | Physics | 19 | Expired |
| US3983359A | Electrical fluid heater | Physics | 14 | Expired |
| US3961336A | Electrode print head | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4518313A | Wind blade vibration eliminator for helicopters | Emerging Cross-Sectional Technologies | 8 | Expired |
| US7765724B2 | Apparatus and methods for refurbishing ice surfaces | Fixed Constructions | 4 | Active |
| US8536162B2 | Conjugates of 1,4,7-triazacyclononanes, dinuclear metal complexes of such conjugates, and methods of use for both 1,4,7-triazacyclononanes and conjugates | Emerging Cross-Sectional Technologies | 1 | Active |
| US4266420A | Crimping tool | Electricity | 1 | Expired |
| US9274103B2 | Conjugates of 1,4,7-triazacyclononanes, dinuclear metal complexes of such conjugates, and methods of use for both 1,4,7-triazacyclononanes and conjugates | Emerging Cross-Sectional Technologies | 1 | Active |
| US9689840B2 | Conjugates of 1,4,7-triazacyclononanes, dinuclear metal complexes of such conjugates, and methods of use for both 1,4,7-triazacyclononanes and conjugate | Emerging Cross-Sectional Technologies | 0 | Active |
| US8907059B2 | Phosphopeptide enrichment of compositions by fractionation on ceramic hydroxyapatite | Chemistry; Metallurgy | 0 | Active |
| US12139707B2 | Stabilized CRISPR complexes | Chemistry; Metallurgy | 0 | Active |
| US10414676B2 | Method and system for providing purified water | Chemistry; Metallurgy | 0 | Active |
| US11884918B2 | Systems and methods for modulating CRISPR activity | Chemistry; Metallurgy | 0 | Active |
| US7498384B2 | Multi-component epoxy-amine primer systems comprising a polythioether | Emerging Cross-Sectional Technologies | 0 | Active |
| US8075214B2 | Electric paint tray apparatus | Emerging Cross-Sectional Technologies | 0 | Active |
| US9134264B2 | Monitoring method | Chemistry; Metallurgy | 0 | Active |
| US12337291B2 | Guide RNA synthesis system and method | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.