Tetsuo Sano
57Patents
13h-index
75Co-inventors
87Inventor score
Filing activity: Apr 11, 1980 → Feb 19, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4799175A | System for inspecting pattern defects of printed wiring boards | Physics | 112 | Expired |
| US4803734A | Method of and apparatus for detecting pattern defects | Physics | 44 | Expired |
| US5372015A | Air conditioner controller | Emerging Cross-Sectional Technologies | 34 | Expired |
| US4561061A | Method of tracing/recording image lines and apparatus therefor | Physics | 34 | Expired |
| US5784893A | Air conditioning system with built-in intermediate heat exchanger with two different types of refrigerants circulated | Mechanical Engineering; Lighting; Heating | 30 | Expired |
| US6173763A | Heat exchanger tube and method for manufacturing a heat exchanger | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US5764793A | Method of and apparatus for inspecting pattern defects | Electricity | 20 | Expired |
| US5878810A | Air-conditioning apparatus | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US4797939A | Pattern masking method and an apparatus therefor | Physics | 17 | Expired |
| US4539478A | Method and apparatus for picture signal enhancement | Electricity | 17 | Expired |
| US5814428A | Toner for developing electrostatic latent image | Physics | 16 | Expired |
| US4570187A | Method for scanning and recording a plurality of original pictures simultaneously | Electricity | 15 | Expired |
| US4447833A | Method for producing a halftone plate | Electricity | 14 | Expired |
| US5161739A | Multi-type air heating apparatus utilizing phase variation of heating medium | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US4682040A | Image pickup apparatus for a printed wiring board | Physics | 13 | Expired |
| US4840220A | Heat pump with electrically heated heat accumulator | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US5541030A | Toner for developing a digital image | Physics | 12 | Expired |
| US6338929B1 | Toner for developing an electrostatic latent image | Physics | 12 | Expired |
| US4519214A | Air conditioner | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4441020A | Method for tracing an object | Physics | 11 | Expired |
| US5499508A | Air conditioner | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US5660964A | Developer containing two kinds of wax | Physics | 11 | Expired |
| US6541173B1 | Color toner for developing electrostatic image comprising two kinds of polyesters and two kinds of releasing agents | Physics | 9 | Expired |
| US5660056A | Air conditioner | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US5776647A | Negatively chargeable toner for developing electrostatic latent image | Physics | 9 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.