Sadao Kojima
11Patents
9h-index
23Co-inventors
72Inventor score
Filing activity: Feb 23, 1976 → Jan 6, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6513506B1 | Cylinder head structure in multi-cylinder engine | Mechanical Engineering; Lighting; Heating | 38 | Expired |
| US4680999A | Replaceable tool | Emerging Cross-Sectional Technologies | 21 | Expired |
| US6672296B2 | Cylinder head structure in multi-cylinder engine | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US4563115A | Cutting machine having stock suction means | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6808467B2 | Blade tensioner and system for a chain | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4879046A | Local water cleaning method for use in consecutive water areas | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6620067B1 | Tensioner device | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4389376A | Apparatus for the preparation of slaked lime solution | Performing Operations; Transporting | 10 | Expired |
| US4366142A | Method and apparatus for the preparation of slaked lime solution | Performing Operations; Transporting | 9 | Expired |
| US4218322A | Water filtration apparatus | Performing Operations; Transporting | 8 | Expired |
| US6561156B2 | Cylinder head apparatus | Mechanical Engineering; Lighting; Heating | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.