Keizo Kato
21Patents
7h-index
53Co-inventors
72Inventor score
Filing activity: Apr 8, 1977 → Oct 22, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5296995A | Method of magnetically recording and reading data, magnetic recording medium, its production method and magnetic recording apparatus | Physics | 44 | Expired |
| US5330880A | Process for producing optical disks | Performing Operations; Transporting | 24 | Expired |
| US5338178A | Embossing metal hold | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4223187A | Method and apparatus for recording and reproducing a video-disc with an oscillated track | Physics | 10 | Expired |
| US6924246B2 | Lead-free glass compositions for decorating ceramic materials | Chemistry; Metallurgy | 9 | Expired |
| US4348461A | Recording member | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4258896A | Driver's seat mounting apparatus for a motor vehicle | Performing Operations; Transporting | 7 | Expired |
| US4484488A | Forward-reverse changeover apparatus for working vehicle | Emerging Cross-Sectional Technologies | 6 | Expired |
| US8107193B2 | Perpendicular magnetic recording head | Physics | 4 | Active |
| US8189304B2 | Magnetoresistive magnetic head having a cpp element using a heusler alloy layer and a high saturation magnetization layer | Emerging Cross-Sectional Technologies | 3 | Active |
| US4241240A | Optical information recording apparatus | Physics | 3 | Expired |
| US10236979B2 | Transmitter, receiver, communication system, and transmission and reception methods | Electricity | 2 | Active |
| US8564781B2 | SPR sensor | Physics | 2 | Active |
| US5295121A | Magneto-optic recording/reproducing method and device and magneto-optic recording medium used for them | Physics | 2 | Expired |
| US9500715B2 | Secondary battery tester | Emerging Cross-Sectional Technologies | 1 | Active |
| US10075239B2 | Reproduction device, method, storage medium, and system | Electricity | 1 | Active |
| US10460414B2 | Digital watermark information detecting device and digital watermark information detecting method | Physics | 0 | Active |
| US7843570B2 | Crystal oscillator sensor and substance adsorption detection method using the sensor | Physics | 0 | Active |
| US11210513B2 | Detection method and detection device | Physics | 0 | Active |
| US9865028B2 | Information detecting device, information detecting system, and information detecting method | Physics | 0 | Active |
| US10523365B2 | Discrimination method and communication system | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.