Hideki Ushio
19Patents
5h-index
28Co-inventors
66Inventor score
Filing activity: Jun 29, 1981 → May 10, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4472736A | Lithographic reproduction original classification and color separation tone curve adjustment | Electricity | 58 | Expired |
| US5874593A | Production process and intermediate of tetrazole compound | Chemistry; Metallurgy | 9 | Expired |
| US6927290B2 | Production of mixed acid anhydride and amide compound | Human Necessities | 7 | Expired |
| US6403832B1 | Process for producing optically active 3,3,3-Trifluoro-2-Hydroxy-2-Methylpropionic acid, and salt thereof | Chemistry; Metallurgy | 7 | Expired |
| US5880291A | Process for producing optically active azetidine-2-carboxylic acid | Chemistry; Metallurgy | 6 | Expired |
| US6191289A | Production process and intermediate of tetrazole compound | Chemistry; Metallurgy | 4 | Expired |
| US6277998A | Production process and intermediate of tetrazole compound | Chemistry; Metallurgy | 4 | Expired |
| US6894190B2 | Process for producing optically active 3,3,3-trifluoro-2-hydroxy-2-methylpropionic acid, and salt thereof | Chemistry; Metallurgy | 3 | Expired |
| US6348617B1 | Method for purifying pyruvic acid compounds | Chemistry; Metallurgy | 2 | Expired |
| US5597929A | Production process of 2-(tetrazol-5-yl)-4-oxo-4H-benzopyran | Chemistry; Metallurgy | 1 | Expired |
| US5659051A | Process of producing 2-cyano-4-oxo-4H-benzopyran compounds | Chemistry; Metallurgy | 1 | Expired |
| US5637736A | Process for preparing 1-bromoalkylbenzene derivatives and intermediates thereof | Chemistry; Metallurgy | 1 | Expired |
| US6753431B2 | Production of mixed acid anhydride and amide compound | Human Necessities | 1 | Expired |
| US5675036A | Process for preparing aromatic amide compound | Chemistry; Metallurgy | 1 | Expired |
| US6313315A | Methods for producing N-protected-azetidine-2-carboxylic acids | Chemistry; Metallurgy | 1 | Expired |
| US5679859A | Process for producing improved crystals of 3-amino-2-hydroxyacetophenone salt | Chemistry; Metallurgy | 0 | Expired |
| US6063940A | Process for preparing 1-bromoalkylbenzene derivatives and intermediates thereof | Chemistry; Metallurgy | 0 | Expired |
| US6114543A | Process for producing optically active azetidine-2-carboxylic acid | Chemistry; Metallurgy | 0 | Expired |
| US6653507B2 | Process for producing optically active 3,3,3-trifluoro-2-hydroxy-2-methylpropionic acid, and salt thereof | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.