Masaki Itoh
23Patents
8h-index
28Co-inventors
75Inventor score
Filing activity: Apr 21, 1977 → Dec 15, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5654950A | Method for protecting data recorded on a partial read-only memory (ROM) medium from unauthorized copying | Physics | 19 | Expired |
| US5700481A | Transdermal drug delivery process | Human Necessities | 18 | Expired |
| US4501384A | Device for mounting container box on motorcycle | Performing Operations; Transporting | 17 | Expired |
| US4839208A | Optical information recording medium | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4084656A | Motorcycle stand with safety switch | Performing Operations; Transporting | 13 | Expired |
| US4740447A | Optical recording medium | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4504548A | Optical information recording medium for semiconductor laser | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4763139A | Optical information storage medium | Physics | 9 | Expired |
| US5398219A | Magneto-optical recording medium with amorphous alloy film layers | Physics | 8 | Expired |
| US4726060A | Line circuit for driving a ringer and a service indicating lamp in a telephone set | Electricity | 5 | Expired |
| US5790499A | Method for protecting data recorded on a partial read-only memory (ROM) medium from unauthorized copying | Physics | 4 | Expired |
| US4279986A | Negative resist and radical scavenger composition with capability of preventing post-irradiation polymerization | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4775568A | Optical information storage medium | Emerging Cross-Sectional Technologies | 4 | Expired |
| US6772041B2 | Hardening equipment and hardening method | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5292592A | Optical information recording medium in which a protective layer comprises a Ni-Cr alloy layer | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6606293B1 | Optical information recording medium and methods for recording, reading, and erasing information thereupon | Physics | 3 | Expired |
| US6723947B2 | Laser beam hardening device | Performing Operations; Transporting | 2 | Expired |
| US5473583A | Magneto-optical recording medium, recording and playback method and apparatus for the same | Physics | 2 | Expired |
| US6117511A | Optical recording media | Emerging Cross-Sectional Technologies | 1 | Expired |
| US5362537A | Optical information recording medium comprising two magneto-optical layers which are made of GDFECO and TBFETI, respectively | Emerging Cross-Sectional Technologies | 1 | Expired |
| US9072206B2 | Light source device | Electricity | 0 | Active |
| US8902277B2 | Communication device, communication method therefor, and communication program therefor | Emerging Cross-Sectional Technologies | 0 | Active |
| US8158072B2 | Analysis apparatus and analysis method of chlorosilanes | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.