Akira Shibata
127Patents
15h-index
107Co-inventors
89Inventor score
Filing activity: May 29, 1974 → Nov 14, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6361638B1 | Process for producing a nonwoven fabric | Emerging Cross-Sectional Technologies | 85 | Expired |
| US4737197A | Solar cell with metal paste contact | Emerging Cross-Sectional Technologies | 46 | Expired |
| US5337199A | Digital transmission signal processing system and recording/reproducing system | Electricity | 33 | Expired |
| US6650491B2 | System and method for setting a read/write offset and for recovering from data read errors | Physics | 30 | Expired |
| US4613912A | Recording and reproducing apparatus for a video tape recorder | Electricity | 25 | Expired |
| US5128922A | Optical disk with glass substrate and method of producing same | Physics | 24 | Expired |
| US4550345A | Magnetic video pilot signal recording/reproducing system | Physics | 22 | Expired |
| US5520523A | Diaphragm-type pump | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US4558378A | Method and apparatus for a magnetic recording/reproducing | Physics | 21 | Expired |
| US5079113A | Photo-mask | Physics | 20 | Expired |
| US4497000A | Magnetic recording/reproducing apparatus | Physics | 19 | Expired |
| US5160366A | Silver-metal oxide composite material and process for producing the same | Electricity | 19 | Expired |
| US3933485A | Electrical contact material | Chemistry; Metallurgy | 16 | Expired |
| US4769722A | Apparatus for recording and reproducing a video signal and for recording and reproducing a PCM audio signal on forward and reverse tape travelling directions | Physics | 16 | Expired |
| US4524380A | Chroma signal recording and reproducing circuit | Electricity | 16 | Expired |
| US6088645A | Control device and control method for transmission with clutch | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US4216431A | Integrated circuit for frequency conversion | Electricity | 14 | Expired |
| US6120012A | Electronically controlled engine mount | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US3933486A | Silver-metal oxide composite and method of manufacturing the same | Chemistry; Metallurgy | 13 | Expired |
| US4819097A | Audio signal recording/reproducing system for use in time-lapse video tape recorder | Electricity | 13 | Expired |
| US4915592A | Inner-cam type distribution fuel injection pump | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US4161403A | Composite electrical contact material of Ag-alloy matrix and internally oxidized dispersed phase | Chemistry; Metallurgy | 13 | Expired |
| US4479190A | Detecting apparatus using a digital computer | Physics | 12 | Expired |
| US4243413A | Integrated Ag-SnO alloy electrical contact materials | Electricity | 12 | Expired |
| US4510530A | Signal reproducing circuit for a video tape recorder | Electricity | 12 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.