Takuya Wada
32Patents
8h-index
46Co-inventors
75Inventor score
Filing activity: Jul 17, 1987 → Jul 30, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5962070A | Substrate treating method and apparatus | Physics | 51 | Expired |
| USD466119S1 | Machine for identifying fingerprint | General | 39 | Expired |
| US4931628A | Apparatus for reproducing optical card data without position indicators | Physics | 29 | Expired |
| US5488603A | Optical information recording reproducing apparatus with first and second electrokinetic transducers at respective distances | Physics | 20 | Expired |
| US5008521A | Reproducing apparatus for an optical recording medium | Physics | 10 | Expired |
| US4852101A | Apparatus for recording and/or reproducing optical cards | Physics | 9 | Expired |
| US7020283B1 | Random number generation apparatus and random number generation method | Physics | 8 | Expired |
| US5999501A | Objective lens actuator and method for producing the same | Physics | 8 | Expired |
| US5792406A | Method of preparing spherical moldings | Performing Operations; Transporting | 5 | Expired |
| US6445811B1 | Fingerprint image processing device and fingerprint image processing method | Physics | 5 | Expired |
| US6175640A | Fingerprint comparing apparatus | Physics | 5 | Expired |
| US6865743B2 | Optical head and method of manufacturing the same | Physics | 4 | Expired |
| US8299782B2 | Position sensor, optical head device, head moving mechanism, information recording and reproduction device and position control system | Physics | 4 | Active |
| US6882803B2 | Method of and apparatus for determining developer level in an image forming apparatus and toner cartridge | Physics | 2 | Expired |
| US9346748B2 | Functional-group-modified carbon material, and method for producing same | Chemistry; Metallurgy | 2 | Active |
| US8559863B2 | Image forming unit and image forming apparatus | Physics | 2 | Active |
| US8340559B2 | Fixing device and image forming apparatus | Physics | 2 | Active |
| US5676996A | Method of preparing carrier for blood treatment apparatus | Chemistry; Metallurgy | 1 | Expired |
| US7248722B2 | Fingerprint identification apparatus and fingerprint identification method | Physics | 1 | Expired |
| US8488421B2 | Lens cleaner and optical disc device | Physics | 1 | Active |
| US9919926B2 | Method for producing random-structure GIC, method for producing exfoliated graphite dispersion liquid, exfoliated graphite dispersion liquid, and exfoliated graphite | Chemistry; Metallurgy | 1 | Active |
| US7036134B2 | Optical head and method of manufacturing the same | Physics | 1 | Expired |
| US6941572B2 | Optical information recording medium and optical information recording/reproduction apparatus | Physics | 0 | Expired |
| US10644318B2 | Carbon material, carbon material-active material composite, electrode material for lithium-ion secondary battery, and lithium-ion secondary battery | Emerging Cross-Sectional Technologies | 0 | Active |
| US9688594B2 | Method for producing modified-graphene-like carbon material, modified-graphene-like carbon material, and resin composite material containing modified-graphene-like carbon material | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.