Tetsuo Kato
71Patents
19h-index
81Co-inventors
87Inventor score
Filing activity: Feb 24, 1977 → Jan 7, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5970507A | Semiconductor memory device having a refresh-cycle program circuit | Physics | 88 | Expired |
| US4308492A | Method of charging a vehicle battery | Electricity | 82 | Expired |
| US6400621B2 | Semiconductor memory device and method of checking same for defect | Physics | 65 | Expired |
| US4867712A | Connector | Electricity | 51 | Expired |
| US5066252A | Retainer for metal terminal of electric connector | Electricity | 39 | Expired |
| US4895229A | Hydraulic shock absorber | Mechanical Engineering; Lighting; Heating | 34 | Expired |
| US5085300A | Hydraulic damper | Mechanical Engineering; Lighting; Heating | 30 | Expired |
| US5720487A | Waterproof rubber plug | Electricity | 30 | Expired |
| US5131865A | Connector apparatus with coupling detecting function | Electricity | 28 | Expired |
| US5051100A | Electrical connector | Electricity | 25 | Expired |
| US5240433A | Waterproof electric connector | Electricity | 24 | Expired |
| US4904196A | Releasable connector for electric circuits | Electricity | 24 | Expired |
| US5174786A | Detector device for coupled connector | Electricity | 24 | Expired |
| US6333879A | Semiconductor device operable in a plurality of test operation modes | Physics | 24 | Expired |
| US4645044A | Hydraulic damper of adjustable damping force type | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4735581A | Packing plug assembly in connector and waterproof connector using same | Electricity | 23 | Expired |
| US5971098A | Muffler for internal combustion engine | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US5801343A | Muffler for internal combustion engine | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US5764576A | Semiconductor memory device and method of checking same for defect | Physics | 19 | Expired |
| US4279646A | Free cutting steel containing sulfide inclusion particles with controlled aspect, size and distribution | Chemistry; Metallurgy | 18 | Expired |
| US4484669A | Hydraulic damper | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5127847A | Connector engagement detecting apparatus | Electricity | 17 | Expired |
| US5108303A | Packing support arrangement for waterproof connector | Electricity | 16 | Expired |
| US4434006A | Free cutting steel containing controlled inclusions and the method of making the same | Chemistry; Metallurgy | 16 | Expired |
| US5928033A | Waterproof structure for conductor leading part | Emerging Cross-Sectional Technologies | 15 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.