Masuo Tamada
13Patents
11h-index
12Co-inventors
65Inventor score
Filing activity: Dec 26, 1984 → Jun 7, 1995
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4632252A | Mail sorting system with coding devices | Emerging Cross-Sectional Technologies | 104 | Expired |
| US4822990A | Admission control system having a transponder actuated by an inquiry signal | Emerging Cross-Sectional Technologies | 91 | Expired |
| US4641753A | Mail sorting apparatus | Emerging Cross-Sectional Technologies | 80 | Expired |
| US5017766A | Portable electronic apparatus capable of confirming validity of transaction data | Physics | 74 | Expired |
| US5729717A | IC card and issuing apparatus allowing multiple applications | Physics | 59 | Expired |
| US4757543A | Encrypting and decrypting device which stores an algorithm in a memory | Physics | 49 | Expired |
| US4879645A | Data processing device with high security of stored programs | Physics | 48 | Expired |
| US4748557A | Data processing terminal device for storing encrypted journal data and decrypting the data | Physics | 42 | Expired |
| US4771460A | Data processing terminal device which stores a modified decrypted data in a programmable read only memory in order to detect alteration thereof | Physics | 38 | Expired |
| US5124920A | Driver restriction apparatus for restricting a vehicle driver | Physics | 23 | Expired |
| US4613805A | Conveyor system | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5148543A | IC card with a stored data change inhibition function | Physics | 8 | Expired |
| US4739479A | Apparatus for inputting classification information of delivery matter | Emerging Cross-Sectional Technologies | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.