John E. Steer
19Patents
7h-index
9Co-inventors
55Inventor score
Filing activity: Oct 3, 1977 → Dec 28, 1992
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4785847A | Unitary poppet valve assembly for a proportioning valve | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4474005A | Master cylinder | Performing Operations; Transporting | 24 | Expired |
| US4559781A | Master cylinder | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5076142A | Brake booster with tandem pistons having annular and radial reinforcing ribs and connected by hooks and slots | Performing Operations; Transporting | 12 | Expired |
| US4685300A | Seal means for a master cylinder | Performing Operations; Transporting | 11 | Expired |
| US4790138A | Master cylinder fast fill valving mechanism with ramp | Performing Operations; Transporting | 8 | Expired |
| USD347415S | Front partition for a tandem brake booster | General | 7 | Expired |
| US4718234A | Fast fill valving mechanism for a master cylinder | Performing Operations; Transporting | 6 | Expired |
| US4167990A | Drum brake having anti-rattle spring clip | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US4630443A | Reservoir for a master cylinder | Performing Operations; Transporting | 4 | Expired |
| US4489224A | Fluid level indicator | Performing Operations; Transporting | 4 | Expired |
| US4510753A | Master cylinder | Performing Operations; Transporting | 4 | Expired |
| USD346576S | Rear partition for a tandem brake booster | General | 3 | Expired |
| US4903387A | Method for making a proportioning valve having a unitary poppet valve assembly | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4908522A | Pressure-balanced proportioning valve with vent-controlled bypass | Performing Operations; Transporting | 2 | Expired |
| US4860541A | Two stage relief valve for master cylinder quick-fill chamber | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4821519A | Primary pressure-balanced proportioning valve | Performing Operations; Transporting | 2 | Expired |
| US4212411A | Master cylinder reservoir cover | Performing Operations; Transporting | 1 | Expired |
| US5007239A | Master cylinder with sandwiched communication interfaces | Performing Operations; Transporting | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.