Yasuo Tsukuda
23Patents
10h-index
41Co-inventors
75Inventor score
Filing activity: Mar 2, 1979 → Aug 13, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4808490A | Plasma sprayed film resistor heater | Electricity | 26 | Expired |
| US7252575B2 | Polishing state monitoring apparatus and polishing apparatus and method | Performing Operations; Transporting | 24 | Expired |
| US4715178A | Exhaust port assembly | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US5422483A | Near infrared analyzer | Physics | 16 | Expired |
| US4306908A | Ferromagnetic amorphous alloy | Electricity | 14 | Expired |
| US4733088A | Radiation detector | Physics | 13 | Expired |
| US7438627B2 | Polishing state monitoring method | Performing Operations; Transporting | 12 | Active |
| US7576855B2 | Spectrophotometric method and apparatus | Physics | 11 | Active |
| US4259101A | Method for producing optical fiber preform | Chemistry; Metallurgy | 11 | Expired |
| US5731594A | Infrared light source | Electricity | 10 | Expired |
| US7645181B2 | Polishing state monitoring apparatus and polishing apparatus | Performing Operations; Transporting | 10 | Active |
| US8049884B2 | Spectrophotometer | Physics | 8 | Active |
| US6758723B2 | Substrate polishing apparatus | Performing Operations; Transporting | 7 | Expired |
| US6942543B2 | Substrate polishing apparatus | Performing Operations; Transporting | 5 | Expired |
| US7547242B2 | Substrate polishing apparatus | Electricity | 3 | Expired |
| US7241202B2 | Substrate polishing apparatus | Performing Operations; Transporting | 2 | Expired |
| US7585204B2 | Substrate polishing apparatus | Performing Operations; Transporting | 2 | Active |
| US8342907B2 | Polishing state monitoring method | Performing Operations; Transporting | 2 | Active |
| US7101257B2 | Substrate polishing apparatus | Electricity | 2 | Expired |
| USRE33022E | Ferromagnetic amorphous alloy | General | 1 | Expired |
| US7830520B2 | Optical measurement device for trace liquid sample | Physics | 0 | Active |
| US12163885B2 | Analysis device, analysis method, trace liquid collection device, and trace liquid collection method | Physics | 0 | Active |
| US7510460B2 | Substrate polishing apparatus | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.