Koppy Corporation
17Patents
0Active
17Granted
28Portfolio score
Filing activity: Sep 29, 1975 → Jul 27, 2004
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4014619A | Retainer ring and splined member assembly | Emerging Cross-Sectional Technologies | 36 | Expired |
| US5180043A | Splined assembly | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4089097A | Method of forming an annular slot in a longitudinally splined annular member | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5906135A | Coast clutch with power take off gear | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5881856A | Clutch drum and method of manufacture | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4765167A | Method of roll forming piston | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5305943A | Splined assembly | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6058591A | Clutch drum and method of manufacture | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5896970A | Clutch housing | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6035737A | Assembly having an outer band member secured to an inner housing | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5893704A | Torque converter | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6158265A | Method of forming retaining members on a housing | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6007430A | Two-piece carrier assembly | Emerging Cross-Sectional Technologies | 4 | Expired |
| US6776274B2 | Assembly for vehicle driveline components | Emerging Cross-Sectional Technologies | 3 | Expired |
| US7243770B2 | Clutch assembly including strengthening members | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4466566A | Method of forming a thin walled annular channel | Performing Operations; Transporting | 3 | Expired |
| US6945086B2 | Clutch assembly including strengthening members | Emerging Cross-Sectional Technologies | 3 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.