Takashi Iwasaki
114Patents
13h-index
131Co-inventors
89Inventor score
Filing activity: Jan 25, 1985 → Jun 2, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5017225A | Microencapsulated photochromic material, process for its preparation and a water-base ink composition prepared therefrom | Emerging Cross-Sectional Technologies | 85 | Expired |
| US5972493A | Microcapsules for magnetic display and magnetic display sheet comprising such microcapsules | Emerging Cross-Sectional Technologies | 57 | Expired |
| US4844002A | Coating feeder system | Textiles; Paper | 40 | Expired |
| USD719909S1 | Condensing lens plate for solar generation panel | General | 38 | Active |
| US5819202A | Apparatus for detecting an abnormality of a control system | Emerging Cross-Sectional Technologies | 34 | Expired |
| US5403773A | Method for producing a semiconductor light emitting device | Electricity | 31 | Expired |
| US4948635A | Gravure coating device and method | Performing Operations; Transporting | 28 | Expired |
| US5304905A | Motor servo-system controller having comparison of detected current with model current integrations | Physics | 20 | Expired |
| US5955856A | Numerical control apparatus and method | Physics | 19 | Expired |
| US5376604A | Organophilic clay | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5880833A | Spectrometer | Physics | 14 | Expired |
| US4791881A | Gravure coating device | Performing Operations; Transporting | 14 | Expired |
| US5212394A | Compound semiconductor wafer with defects propagating prevention means | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4922675A | Abrasive tape | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5723360A | Method of processing an epitaxial wafer of InP or the like | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6298042A | Packet switching apparatus adapted to control allowed transmission rate in packet switching network, and method of controlling allowed transmission rate | Electricity | 11 | Expired |
| US5767966A | Optical spectrum measuring device | Physics | 11 | Expired |
| US5784159A | Optical spectrum measuring apparatus | Physics | 10 | Expired |
| US6299972A | Microcapsule magnetic display sheet and a method thereof | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5561551A | Method and apparatus for determining noise factor of optical amplifier | Electricity | 9 | Expired |
| US5089330A | Abrasive tape in which a single compound serves to improve dispersion of abrasive particles and also as antistatic and lubricant for the tape | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5825484A | Optical spectrum measuring device | Physics | 8 | Expired |
| USD784936S1 | Flexible printed wiring board with device | General | 8 | Active |
| US8977436B2 | Electric power steering system | Performing Operations; Transporting | 8 | Active |
| US5923420A | Optical spectrum calculating method | Physics | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.