Masahiro Yanagisawa
79Patents
19h-index
95Co-inventors
87Inventor score
Filing activity: Oct 22, 1976 → Feb 2, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6222967A | Packaging platform, optical module using the platform, and methods for producing the platform and the module | Physics | 60 | Expired |
| US6487045B1 | Magnetic disc apparatus and magnetic head in which a recording/reproduction element is mounted on a slider via a piezoelectric element | Emerging Cross-Sectional Technologies | 53 | Expired |
| US5621837A | Opto-electronic hybrid integration platform, optical sub-module, opto-electronic hybrid integration circuit and process for fabricating platform | Electricity | 52 | Expired |
| US4069360A | Magnetic record member and process for manufacturing the same | Emerging Cross-Sectional Technologies | 51 | Expired |
| US6027254A | Opto-electronic hybrid integration platform, optical sub-module, opto-electronic hybrid integration circuit, and process for fabricating platform | Electricity | 39 | Expired |
| US4696845A | Magnetic storage medium with lubricating coating | Emerging Cross-Sectional Technologies | 37 | Expired |
| US4820051A | Apparatus for determining microhardness | Physics | 36 | Expired |
| US6480639B2 | Optical module | Physics | 35 | Expired |
| US8441713B2 | Electrophoretic liquid and display device using electrophoretic liquid | Physics | 34 | Active |
| US6236532A | Magnetic disk drive having small clearance between magnetic disk and surface opposing thereto | Physics | 31 | Expired |
| US4849305A | Magnetic recording medium | Emerging Cross-Sectional Technologies | 30 | Expired |
| US4307156A | Magnetic record member | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5858536A | Magnetic recording medium having a perfluoropolyether lubricant bonded to the surface of a carbon protective film | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4152487A | Magnetic record member | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4326229A | Magnetic record member and process for manufacturing the same | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4390562A | Process of manufacturing a magnetic record member | Physics | 23 | Expired |
| US6164836A | Opto-electronic hybrid integration platform, optical sub-module, opto-electronic hybrid integration circuit, and process for fabricating platform | Electricity | 23 | Expired |
| US6589554B1 | Tablets quickly disintegrating in the oral cavity and process for producing the same | Electricity | 21 | Expired |
| US5673161A | Low wear rate magnetic head slider with high recording density | Physics | 19 | Expired |
| US5031055A | Data storage apparatus with head displacement sensor | Physics | 18 | Expired |
| US7880955B2 | Electrophoretic dispersion solution, image display medium using the same, and image display device using the same | Physics | 18 | Active |
| US5973883A | Magnetic head supporting mechanism | Physics | 15 | Expired |
| US8384983B2 | Electrochromic display device, fabrication method therefor, and driving method therefor | Physics | 15 | Active |
| US9020307B2 | Optical waveguide device and module | Physics | 14 | Active |
| US4679829A | Porting member with a universal coupling mechanism | Mechanical Engineering; Lighting; Heating | 14 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.