Keizo Hayashi
24Patents
12h-index
30Co-inventors
81Inventor score
Filing activity: Jun 29, 1979 → Mar 19, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6684574B2 | Insert for trim, trim and weather strip for vehicle | Performing Operations; Transporting | 22 | Expired |
| US4333221A | Method for producing a channel shaped trim | Emerging Cross-Sectional Technologies | 21 | Expired |
| US5679303A | Method of and an apparatus for forming weather strip by extrusion | Performing Operations; Transporting | 20 | Expired |
| US4424976A | Channel-shaped trim with disconnected core pieces | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5447670A | Method of and apparatus for forming weather strip by extrusion | Performing Operations; Transporting | 19 | Expired |
| US5240664A | Method of manufacturing a door weather strip | Performing Operations; Transporting | 19 | Expired |
| US5085006A | Weather strip for motor vehicle | Performing Operations; Transporting | 18 | Expired |
| US4339860A | Method of producing channel-shaped trim | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4469817A | Method for reclamation of vulcanized rubber | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5753063A | Method of decorating rubber extruded product | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4918867A | Opening trim | Performing Operations; Transporting | 13 | Expired |
| US5099612A | Door weather strip | Performing Operations; Transporting | 12 | Expired |
| US4708633A | Injection molding machine | Performing Operations; Transporting | 9 | Expired |
| US4669144A | Wiper blade | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6099676A | Method for making an article including a tape member bonded to an extruded rubber member | Performing Operations; Transporting | 7 | Expired |
| US5958318A | Weather strip and method and apparatus for extrusion-molding the same | Performing Operations; Transporting | 7 | Expired |
| US6647667B2 | Trim and seal member | Performing Operations; Transporting | 6 | Expired |
| US4460325A | Metal mold for vulcanization of reinforced hose | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4493632A | Spacer in metal-mold vulcanizer for rubber hose | Performing Operations; Transporting | 4 | Expired |
| US5169918A | Polymerization apparatus having an effective height/effective inner diameter ratio of at least 4 and a circumferential agitative diameter/effective inner ratio diameter of from 0.7 to 0.9 | Performing Operations; Transporting | 4 | Expired |
| US6579959B2 | Process for producing isobutylene polymers | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4608005A | Clamping device | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5165201A | Vehicle weather strip | Performing Operations; Transporting | 2 | Expired |
| US5278262A | Polymerization apparatus and batch-wise process for producing vinyl chloride resin | Performing Operations; Transporting | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.