Takashi Yoshikawa
98Patents
15h-index
133Co-inventors
87Inventor score
Filing activity: Jan 30, 1975 → Sep 26, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5778018A | VCSELs (vertical-cavity surface emitting lasers) and VCSEL-based devices | Electricity | 89 | Expired |
| US7559702B2 | Connector holder, optical-electrical converter with attached connector holder, optical connector fixing structure and connector holder assembly method | Emerging Cross-Sectional Technologies | 66 | Active |
| US8317411B2 | Connector holder, optical-electrical converter with attached connector holder, optical connector fixing structure and connector holder assembly method | Emerging Cross-Sectional Technologies | 56 | Active |
| US7761307B2 | Power transmission and power receiving apparatus and method | Emerging Cross-Sectional Technologies | 56 | Active |
| US8083418B2 | Connector holder, optical-electrical converter with attached connector holder, optical connector fixing structure and connector holder assembly method | Emerging Cross-Sectional Technologies | 50 | Active |
| US4860523A | Hermetic packaging apparatus | Performing Operations; Transporting | 40 | Expired |
| US6154479A | VCSELs (vertical-cavity surface emitting lasers) and VCSEL-based devices | Electricity | 39 | Expired |
| USD790559S1 | Display screen with graphical user interface | General | 38 | Active |
| US5772900A | Method and apparatus for reclaiming used working fluid | Chemistry; Metallurgy | 30 | Expired |
| US6901185B2 | Optical module capable of improving coupling efficiency and suppressing fluctuation of coupling loss and its manufacturing method | Physics | 28 | Expired |
| US5448219A | Indicating apparatus from preventing vehicles from colliding with each other as they pass | Physics | 23 | Expired |
| US7873056B2 | Switch device, switching method and switch control program | Electricity | 20 | Active |
| US6883841B2 | Door opening and closing mechanism with dual pivot axes for a door | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6687829B1 | Data transmission apparatus and method for management of user identification data allocated to image data | Electricity | 15 | Expired |
| USD746303S1 | Display screen with graphical user interface | General | 15 | Active |
| US5068537A | Passenger number sensor system | Physics | 14 | Expired |
| US6802155B1 | Door opening and closing mechanism with dual pivot axis for a door | Emerging Cross-Sectional Technologies | 13 | Expired |
| US7784219B2 | Door opening and closing mechanism | Emerging Cross-Sectional Technologies | 13 | Active |
| US6871343B1 | Central processing apparatus and a compile method | Physics | 12 | Expired |
| USD746335S1 | Display screen with icon | General | 12 | Active |
| US8135385B2 | Mobile terminal, access control management device, and access control management method | Electricity | 12 | Active |
| US5827382A | Method of manufacturing a multilayer capacitor | Emerging Cross-Sectional Technologies | 11 | Expired |
| US7613404B2 | Image forming apparatus transferring log information | Electricity | 10 | Active |
| US4570165A | Adjustable loop and dipole antenna | Electricity | 9 | Expired |
| US5898627A | Semiconductor memory having redundant memory cell array | Physics | 9 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.