Keiichi Tsuto
17Patents
9h-index
28Co-inventors
72Inventor score
Filing activity: Jul 12, 1976 → Jan 31, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5902569A | Ultraviolet shielding composite fine particles, method for producing the same, and cosmetics | Chemistry; Metallurgy | 60 | Expired |
| US6288251A | Process for preparing alkyl esters of fatty acids from fats and oils | Emerging Cross-Sectional Technologies | 46 | Expired |
| US6090959A | Method of producing fatty acid lower alkylester from fat and oil | Chemistry; Metallurgy | 34 | Expired |
| US6960672B2 | Processes for producing alkyl ester of fatty acid | Emerging Cross-Sectional Technologies | 25 | Expired |
| US7626047B2 | Method of producing fatty acid alkyl ester for diesel fuel oil | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5827507A | Ultraviolet shielding composite fine particles, method for producing the same, and cosmetics | Chemistry; Metallurgy | 18 | Expired |
| US4072470A | Gas feeder for sulfonation apparatus | Performing Operations; Transporting | 15 | Expired |
| US5618580A | Method for producing ceramic fine particles and apparatus used therefor | Chemistry; Metallurgy | 13 | Expired |
| US6197282A | Fine ultraviolet screening particles, process for preparing the same, and cosmetic preparation | Chemistry; Metallurgy | 12 | Expired |
| US5274187A | Process for producing compound having carbonyl and/or carboxyl group | Chemistry; Metallurgy | 9 | Expired |
| US6090373A | Ultraviolet-screening composite particulate and process for the production thereof | Human Necessities | 7 | Expired |
| US7488837B2 | Process for producing fatty acid alkyl ester | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4097242A | Sulfonation apparatus | Chemistry; Metallurgy | 2 | Expired |
| US7857869B2 | Process for producing diesel fuel oil from fat | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4086256A | Process for sulfonation | Chemistry; Metallurgy | 1 | Expired |
| US5321630A | Method of detecting a layer level condition | Physics | 1 | Expired |
| US10533140B2 | Method for producing hydrocarbon liquid fuel | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.