Alan Johnson
60Patents
17h-index
43Co-inventors
84Inventor score
Filing activity: May 8, 1974 → Sep 19, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5314387A | Hydrostatic transmission | Performing Operations; Transporting | 204 | Expired |
| US5201692A | Rider transaxle having hydrostatic transmission | Performing Operations; Transporting | 157 | Expired |
| US4903545A | Hydrostatic transmission center section | Emerging Cross-Sectional Technologies | 110 | Expired |
| US5156576A | Compact integrated transaxle | Emerging Cross-Sectional Technologies | 110 | Expired |
| US5505279A | Hydrostatic transmission and axle assembly | Emerging Cross-Sectional Technologies | 55 | Expired |
| US4953426A | Housing support for hydraulic displacement unit swashplate | Emerging Cross-Sectional Technologies | 51 | Expired |
| US5010733A | Hydrostatic transmission with hydraulic bypass and air bleed | Mechanical Engineering; Lighting; Heating | 47 | Expired |
| US5626204A | Hydrostatic transaxle | Emerging Cross-Sectional Technologies | 41 | Expired |
| US5501640A | Transaxle having hydrostatic transmission with hydraulic reduction | Emerging Cross-Sectional Technologies | 39 | Expired |
| US5330394A | Rider transaxle having improved hydrostatic transmission | Emerging Cross-Sectional Technologies | 37 | Expired |
| US3963552A | Method of feeding sheets to a continuous laminating press | Emerging Cross-Sectional Technologies | 31 | Expired |
| US5218886A | Hydrostatic transmission center section | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5616092A | Transaxle having hydrostatic transmission with expansion chamber | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5542494A | Hydrostatic transmission and axle assembly | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5211077A | Hydrostatic transmission center section | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5513717A | Hydrostatic transmission and axle assembly | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6256989A | Method and apparatus for improved hydrostatic transmission having bypass | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6550243B2 | Hydrostatic transmission | Emerging Cross-Sectional Technologies | 17 | Expired |
| US10438176B2 | Multiple merchant payment processor platform apparatuses, methods and systems | Physics | 14 | Active |
| US5634526A | Hydrostatic transmission center section | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5768892A | Rider transaxle having improved hydrostatic transmission | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5497623A | Hydrostatic pump and motor unit | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6014861A | Hydrostatic transmission | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6261201A | Differential gear mechanism | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5921151A | Axle driving apparatus | Emerging Cross-Sectional Technologies | 10 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.