Osamu Matsumoto
111Patents
17h-index
177Co-inventors
89Inventor score
Filing activity: May 7, 1976 → Jan 8, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4904136A | Thread securing device using adhesive | Mechanical Engineering; Lighting; Heating | 77 | Expired |
| US6995406B2 | Multibeam semiconductor laser, semiconductor light-emitting device and semiconductor device | Electricity | 62 | Expired |
| US4937142A | Covered lead wire for vehicles | Emerging Cross-Sectional Technologies | 57 | Expired |
| US5625308A | Two input-two output differential latch circuit | Electricity | 55 | Expired |
| US5795452A | Dry process system | Electricity | 46 | Expired |
| US4053152A | Sheet feeding device | Performing Operations; Transporting | 33 | Expired |
| US5031149A | Non-volatile semiconductor memory device having, at the prestage of an address decoder, a level shifter for generating a program voltage | Physics | 32 | Expired |
| US5208488A | Potential detecting circuit | Physics | 29 | Expired |
| US4594987A | Fuel injection control apparatus for internal combustion engine | Mechanical Engineering; Lighting; Heating | 27 | Expired |
| US5696511A | Voltage comparator and pipeline type A/D converter | Electricity | 23 | Expired |
| US7599106B2 | Optical mask and MOPA laser apparatus including the same | Electricity | 23 | Active |
| US4880207A | Intake throttle valve return device of engine | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US4444015A | Method for recovering power according to a cascaded Rankine cycle by gasifying liquefied natural gas and utilizing the cold potential | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US5809863A | Swash plate type axial piston pump | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US5599356A | Process for producing an aqueous high concentration coal slurry | Chemistry; Metallurgy | 20 | Expired |
| US4958762A | Ultrasonic wire bonder | Electricity | 20 | Expired |
| US5111775A | Cooling water temperature controlling apparatus | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US5139227A | Proportional flow control valve | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US5801986A | Semiconductor memory device having both redundancy and test capability and method of manufacturing the same | Physics | 17 | Expired |
| US4806839A | Device for energizing a hermetic motor using inverter | Electricity | 16 | Expired |
| US5168852A | Throttle return spring assembly for an engine intake throttle valve return device | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US9056629B2 | Personal vehicle control device | Emerging Cross-Sectional Technologies | 16 | Active |
| US5010457A | Apparatus for adjusting attitude of optical axes of head lamps on vehicle | Performing Operations; Transporting | 16 | Expired |
| US5629700A | Pipeline type analog to digital converter including plural series connected analog to digital converter stages | Electricity | 14 | Expired |
| US5821893A | Pipeline type A/D converter | Electricity | 14 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.