Berthold Martin
35Patents
11h-index
22Co-inventors
75Inventor score
Filing activity: Aug 29, 1989 → Jun 15, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4959043A | Multi-pinion differential assembly | Mechanical Engineering; Lighting; Heating | 63 | Expired |
| US6752738B1 | Eight-speed automatic transmission | Mechanical Engineering; Lighting; Heating | 36 | Expired |
| US5536220A | Five-speed automatic transmission | Mechanical Engineering; Lighting; Heating | 35 | Expired |
| US5533945A | Five-speed automatic transmission | Mechanical Engineering; Lighting; Heating | 33 | Expired |
| US8444517B2 | Hybrid transmission | Emerging Cross-Sectional Technologies | 20 | Active |
| US6767304B1 | Control system for an eight-speed automatic transmission | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US5273136A | Lubrication system for a north-south automatic transaxle | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5188575A | Automatic four-speed transmission with interconnected clutches | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US5415509A | Infinitely adjustable fastener lock plate and ring | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US6471613B1 | Transmission with variable line pressure | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US5511642A | Overrunning clutch assembly | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US5293686A | Method of adjustment for a north-south automatic transaxle | Emerging Cross-Sectional Technologies | 10 | Expired |
| US7182562B2 | Gear bolt retention in an automatic transmission assembly subjected to thrust and bending loading | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US4958753A | Clutch reaction and pressure plates in an automatic transmission | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US6142037A | Transmission check valve | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5279186A | Assembly for a north-south automatic transaxle | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5609538A | Lubricating device for a planetary gear unit | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US5257962A | Output assembly for a north-south transaxle | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6095941A | Overrunning clutch assembly | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US6074323A | Annulus gear for an automatic transmission and method of construction | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US6068569A | Automatic transmission hydraulic control system with parallel lubrication and cooler circuits | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US6196252A | Shuttle valve for a multipath hydraulic circuit with bypass pressure venting | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6205779A | Integral hub driven gears | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US5289635A | Method of assembly for a north-south automatic transaxle | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5259271A | North-south automatic transaxle | Emerging Cross-Sectional Technologies | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.