Takehiro Takahashi
95Patents
8h-index
67Co-inventors
81Inventor score
Filing activity: Nov 18, 1982 → Nov 11, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5091618A | IC card reader/writer | Physics | 71 | Expired |
| US5247164A | IC card and portable terminal | Physics | 62 | Expired |
| US5406064A | IC card and portable terminal | Physics | 32 | Expired |
| US5172898A | Paperboard feeding apparatus | Performing Operations; Transporting | 14 | Expired |
| US8299980B2 | Image display device | Physics | 10 | Active |
| US7690095B2 | Method for manufacturing quartz piece | Emerging Cross-Sectional Technologies | 9 | Active |
| US5467475A | Data collection-transmission apparatus and data collection system | Physics | 8 | Expired |
| US5219157A | Paperboard feeding apparatus | Performing Operations; Transporting | 8 | Expired |
| US9197420B2 | Using information in a digital certificate to authenticate a network of a wireless access point | Electricity | 7 | Active |
| US7984536B2 | Method of manufacturing a piezoelectric resonator | Emerging Cross-Sectional Technologies | 6 | Active |
| US8541928B2 | Quartz-crystal devices exhibiting reduced crystal impedance | Electricity | 5 | Active |
| US6384502B1 | Diskette incorporating permanent magnet generator | Electricity | 5 | Expired |
| US8053952B2 | Piezoelectric resonator with scattering-prevention film to prevent short-circuit of the excitation electrode | Emerging Cross-Sectional Technologies | 5 | Active |
| US8695815B2 | Housing frame of electrical apparatus | Emerging Cross-Sectional Technologies | 4 | Active |
| US8476811B2 | Piezoelectric device with tuning-fork type piezoelectric vibrating piece | Electricity | 4 | Active |
| US9547218B2 | Lens module and portable photography device | Physics | 4 | Active |
| US4470592A | Apparatus for guiding a sheet | Performing Operations; Transporting | 4 | Expired |
| US7596851B2 | Method of manufacturing a quartz resonator | Emerging Cross-Sectional Technologies | 3 | Active |
| US10032995B2 | Compound having diazatriphenylene ring structure, and organic electroluminescent device | Electricity | 3 | Active |
| US8810112B2 | Piezoelectric devices and methods for manufacturing piezoelectric substrates used in such devices | Electricity | 3 | Active |
| US9132610B2 | Ni-containing-surface-treated steel sheet for can and manufacturing method thereof | Emerging Cross-Sectional Technologies | 3 | Active |
| US8416268B2 | Image display device | Electricity | 2 | Active |
| US8624470B2 | Piezoelectric devices including electrode-less vibrating portions | Electricity | 2 | Active |
| US9954687B2 | Establishing a wireless connection to a wireless access point | Electricity | 2 | Active |
| US8773005B2 | Quartz-crystal devices exhibiting reduced electrical impedance | Electricity | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.