Tsutomu Ishida
95Patents
13h-index
80Co-inventors
87Inventor score
Filing activity: Apr 12, 1977 → Dec 21, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4867629A | Dusttight storage cabinet apparatus for use in clean rooms | Emerging Cross-Sectional Technologies | 386 | Expired |
| US4781511A | Semiconductor processing system | Emerging Cross-Sectional Technologies | 376 | Expired |
| US5729750A | Automatic dimensioning in computer aided design | Emerging Cross-Sectional Technologies | 99 | Expired |
| US4826360A | Transfer system in a clean room | Emerging Cross-Sectional Technologies | 77 | Expired |
| US4904153A | Transporting robot for semiconductor wafers | Emerging Cross-Sectional Technologies | 47 | Expired |
| US4114536A | Method of and apparatus for transfer printing a toner image | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4874957A | Contact type image sensor | Electricity | 21 | Expired |
| US4220699A | Method for producing a large number of copies by means of copying apparatus | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5189728A | Rule generating and verifying apparatus for fuzzy control | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6929870B2 | Hydrocarbon compounds, materials for organic electroluminescent elements and organic electroluminescent elements | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6171194A | Damper | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5566274A | Method and apparatus for setting membership functions, and method and apparatus for analyzing same | Physics | 15 | Expired |
| US4903610A | Railway carrier apparatus for semiconductor wafers | Electricity | 14 | Expired |
| US4413899A | Copying method and apparatus | Physics | 10 | Expired |
| US5305425A | Method of and apparatus for evaluating membership functions or rules in fuzzy reasoning system | Emerging Cross-Sectional Technologies | 9 | Expired |
| US7166240B2 | Hydrocarbon compounds, materials for organic electroluminescent elements and organic electroluminescent elements | Emerging Cross-Sectional Technologies | 8 | Expired |
| US8045868B2 | Recording material determination apparatus and image forming apparatus | Physics | 8 | Active |
| US5239620A | Rule generating and verifying apparatus for fuzzy control | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5347615A | Rule generating and verifying apparatus for fuzzy control using temporary exclusion of a selected rule | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4084899A | Electrostatic copying machine | Physics | 6 | Expired |
| US8774653B2 | Recording medium determination apparatus and image forming apparatus | Physics | 6 | Active |
| US5861108A | Naphthalene compound, and liquid crystal composition and liquid crystal element using the same | Chemistry; Metallurgy | 6 | Expired |
| US9874842B2 | Sheet determination apparatus using ultrasonic wave transmitting unit or reception unit | Physics | 6 | Active |
| US4661428A | Composite photosensitive elements for use in electrophotography and process of forming images using same | Physics | 5 | Expired |
| US6345430B1 | Damper | Emerging Cross-Sectional Technologies | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.