Motoyoshi Murakami
32Patents
8h-index
21Co-inventors
71Inventor score
Filing activity: Apr 14, 1989 → Jan 31, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6266299A | Magneto-optical disk having write-once identification marks and method for recording thereof | Physics | 78 | Expired |
| US6973015B1 | Optical disk, method for recording and reproducing additional information to and from optical disk, reproducing apparatus for optical disk, and recording and reproducing apparatus for optical disk | Physics | 23 | Expired |
| US5656370A | Optical recording medium | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4952295A | Method of producing a deposition film of composite material | Physics | 17 | Expired |
| US5582891A | Optical disk substrate with land planes of uniform height | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6018511A | Magneto-optical recording medium and readout method of the same | Physics | 9 | Expired |
| US6519211B1 | Magneto-optical recording medium having magnetic domain shrinks and disappears | Physics | 9 | Expired |
| US6584046B2 | Method for reproducing information data from magneto-optical recording medium using linear polarized beam | Physics | 8 | Expired |
| US6826131B2 | Magneto-optical recording medium having multiple magnetic layers | Physics | 8 | Expired |
| US6767697B2 | Magneto-optical disk and method for producing same by initializing with a laser having a predetermined wavelength | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5518826A | Magneto-optical recording medium and method of manufacturing same | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7590031B2 | Optical recording medium having BCA of write-once information | Physics | 4 | Active |
| US6504797B1 | Magneto-optical recording medium having multiple magnetic layers and reproducing method thereof | Physics | 3 | Expired |
| US6788624B2 | Method and apparatus for reproducing information from a magneto-optical recording medium | Physics | 2 | Expired |
| US5679386A | Optical disk formation member for making an optical disk substrate | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7535803B2 | Method for recording to and reproducing from a magnetic recording medium, recording and reproduction device for the same, and magnetic recording medium | Emerging Cross-Sectional Technologies | 2 | Active |
| US5472758A | Optical recording medium for short-wavelength of laser beam and read/write/erase method using the medium | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7180831B2 | Magneto-optical recording medium having a recording layer of columnar structure | Physics | 2 | Expired |
| US5565278A | Magneto-optical recording medium | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7414924B2 | Magneto-optical recording medium having watermark for preventing unauthorized copy | Physics | 2 | Active |
| US6747919B2 | Magneto-optical recording medium, and method and apparatus for producing the same | Physics | 2 | Expired |
| US7251200B2 | Apparatus for reproducing information data from magneto-optical recording medium using linear polarized beam | Physics | 2 | Expired |
| US6853606B2 | Magneto-optical storage medium capable of transferring magnetic domain from recording layer to reproducing layer | Physics | 1 | Expired |
| US7012857B2 | Magneto optical recording medium having a multilayer recording film of different thickness | Physics | 1 | Expired |
| US6975564B2 | Magneto-optical recording medium for use in domain wall displacement detection system, and method for producing the same | Emerging Cross-Sectional Technologies | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.