Takashi Ishikawa
144Patents
18h-index
250Co-inventors
89Inventor score
Filing activity: Jun 27, 1975 → Mar 26, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5678369A | Refractory/heat insulating panels | Fixed Constructions | 61 | Expired |
| US6777621B2 | Flat panel display module and method of manufacturing the same | Emerging Cross-Sectional Technologies | 51 | Expired |
| US7151129B2 | Carbon nanofiber-dispersed resin fiber-reinforced composite material | Emerging Cross-Sectional Technologies | 47 | Expired |
| US6949148B2 | Method of stress inducing transformation of austenite stainless steel and method of producing composite magnetic members | Chemistry; Metallurgy | 43 | Expired |
| US5687697A | Vehicle fuel vapor treating apparatus | Mechanical Engineering; Lighting; Heating | 42 | Expired |
| US5488462A | Electrophotographic apparatus having developing device with seals for preventing toner leakage | Physics | 36 | Expired |
| US4189206A | Optical switching device | Physics | 36 | Expired |
| US4107376A | Granulated fire retardant materials | Emerging Cross-Sectional Technologies | 32 | Expired |
| US5632251A | Engine fuel vapor treating apparatus | Performing Operations; Transporting | 30 | Expired |
| US5623911A | Fuel vapor treating apparatus | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US7208207B2 | Liner for high pressure gas container and high pressure gas container | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4749291A | Inking system for wire dot matrix printer | Performing Operations; Transporting | 27 | Expired |
| US4267221A | Architectural panel and method of making the same | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4111724A | Method of manufacturing oxide isolated semiconductor device utilizing selective etching technique | Electricity | 24 | Expired |
| US5655178A | Electrophotographic apparatus having cleaning device and developing device configured to prevent toner leakage | Physics | 24 | Expired |
| US6702904B2 | High tensile cold-rolled steel sheet having excellent strain aging hardening properties | Chemistry; Metallurgy | 23 | Expired |
| US6533002B1 | Fuel tank system | Performing Operations; Transporting | 23 | Expired |
| US6957542B1 | Fuel tank system | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6047687A | Canister | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US7029194B2 | One-touch cap for fixing a control cable | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4131490A | Method for scarfing surface defects of a metal piece | Performing Operations; Transporting | 17 | Expired |
| US5323951A | Method of joining steel sheet bars in hot rolling and a continuous hot rolling method | Performing Operations; Transporting | 16 | Expired |
| US4163351A | Architectural panel material for use as roofing material, material for external wall and the like purposes | Fixed Constructions | 16 | Expired |
| US5289237A | Developing device and method for locating a toner restricting member at a developing device | Physics | 15 | Expired |
| US6512181B2 | Multilayer type printed-wiring board and method of measuring impedance of multilayer type printed-wiring board | Physics | 15 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.