Tsuneo Tanaka
28Patents
14h-index
69Co-inventors
84Inventor score
Filing activity: May 11, 1976 → Aug 31, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4823908A | Directional loudspeaker system | Electricity | 95 | Expired |
| US5025474A | Speaker system with image projection screen | Electricity | 74 | Expired |
| US4786341A | Method for manufacturing concrete structure | Emerging Cross-Sectional Technologies | 43 | Expired |
| US4329699A | Semiconductor device and method of manufacturing the same | Emerging Cross-Sectional Technologies | 42 | Expired |
| US4798050A | Control system for hydraulic tandem pump in motor vehicle | Performing Operations; Transporting | 40 | Expired |
| US4443528A | Photoconductive materials comprising nitro or cyano substituted phthalocyanine compounds for electrophotography | Physics | 26 | Expired |
| US4171234A | Method of fabricating three-dimensional epitaxial layers utilizing molecular beams of varied angles | Emerging Cross-Sectional Technologies | 25 | Expired |
| US4071383A | Process for fabrication of dielectric optical waveguide devices | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4577660A | Rotary servovalve | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4452274A | Rotary valve for power steering system | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4460016A | Rotary servovalve | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5493647A | Digital signal recording apparatus and a digital signal reproducing apparatus | Physics | 15 | Expired |
| US4877681A | Heat-sensitive transfer material | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4499136A | Anti-corrosive covering sheet | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6017588A | Method for reinforcing structures | Fixed Constructions | 14 | Expired |
| US4426556A | Electrodynamic loudspeaker | Electricity | 13 | Expired |
| US4592977A | Lithographic printing plate | Physics | 12 | Expired |
| US5046933A | Vane pump with pressure leaking groove to reduce pulsations | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US5073946A | Thin speaker having an enclosure with an open portion and a closed portion | Electricity | 11 | Expired |
| US4380087A | X-ray film cassette | Physics | 11 | Expired |
| US4708903A | Heat-sensitive transfer sheet | Emerging Cross-Sectional Technologies | 9 | Expired |
| USD704381S1 | Working glove | General | 8 | Active |
| US4799514A | Rotary servovalve for power-assisted steering system | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4610614A | Vane pump | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US8091522B2 | Variable valve driving device | Mechanical Engineering; Lighting; Heating | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.