Chihiro Hayashi
50Patents
13h-index
55Co-inventors
87Inventor score
Filing activity: Jul 12, 1976 → Dec 17, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6067502A | Device for displaying map | Physics | 261 | Expired |
| US5944768A | Navigation system | Physics | 218 | Expired |
| US5080727A | Metallic material having ultra-fine grain structure and method for its manufacture | Emerging Cross-Sectional Technologies | 64 | Expired |
| US5625229A | Heat sink fin assembly for cooling an LSI package | Electricity | 48 | Expired |
| US5726495A | Heat sink having good heat dissipating characteristics | Emerging Cross-Sectional Technologies | 44 | Expired |
| US5369301A | Pin-finned forged heat sink | Electricity | 33 | Expired |
| US4078631A | Apparatus for controlling acceleration and deceleration of motor vehicles | Emerging Cross-Sectional Technologies | 32 | Expired |
| US5533370A | Tube rolling method and apparatus | Performing Operations; Transporting | 24 | Expired |
| US5455382A | IC package heat sink fin | Electricity | 20 | Expired |
| US7980710B2 | Retroreflective article | Physics | 17 | Active |
| US4597278A | Method for producing I-beam having centrally corrugated web | Fixed Constructions | 16 | Expired |
| US4470282A | Method of piercing in seamless tube manufacturing | Performing Operations; Transporting | 15 | Expired |
| US4852736A | Metal case for housing an IC and a manufacturing method therefor | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5519938A | Process for producing a heat sink fin | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5501091A | Method and apparatus for elongating metal tubes by means of a mandrel mill | Performing Operations; Transporting | 12 | Expired |
| US5152047A | Method of producing laminated metal belt | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4420961A | Method for producing beam blank for universal beam | Performing Operations; Transporting | 8 | Expired |
| US4416134A | Process for manufacturing seamless metal tubes | Performing Operations; Transporting | 7 | Expired |
| US4827750A | Method of piercing and manufacturing seamless tubes | Performing Operations; Transporting | 7 | Expired |
| US5636542A | Piercing-rolling method and piercing/rolling apparatus for seamless steel tube | Performing Operations; Transporting | 6 | Expired |
| US7146836B2 | Piercing method for manufacturing of seamless pipe | Performing Operations; Transporting | 5 | Expired |
| US4510787A | Method of manufacturing hollow rods | Emerging Cross-Sectional Technologies | 5 | Expired |
| US8388154B2 | Cube-corner retroreflective article | Physics | 5 | Active |
| US4512177A | Method of manufacturing metallic materials having a circular cross section | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7992417B2 | Method for producing ultra thin wall metallic tube by cold rolling method | Performing Operations; Transporting | 4 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.