Yukihiro Ohashi
30Patents
11h-index
42Co-inventors
71Inventor score
Filing activity: May 18, 1990 → Apr 10, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5334372A | Alcohol-modified silicon ester derivative and cosmetic composition containing same | Human Necessities | 40 | Expired |
| US6607563B2 | Hair dye composition | Emerging Cross-Sectional Technologies | 37 | Expired |
| US6475248B2 | Hair dye composition | Human Necessities | 20 | Expired |
| US6592630B2 | Hair dye composition | Human Necessities | 18 | Expired |
| US6616709B2 | Hair dye composition | Human Necessities | 16 | Expired |
| US5417967A | Alcohol-modified silicone ester derivative and cosmetic compositions containing same | Human Necessities | 16 | Expired |
| US5210251A | Ester-modified silicone derivative and a cosmetic composition containing the same | Human Necessities | 14 | Expired |
| US6451069B2 | Hair dye composition | Human Necessities | 13 | Expired |
| US6171595A | Skin external preparation | Human Necessities | 12 | Expired |
| US6075052A | Skin external preparation | Human Necessities | 12 | Expired |
| US5723497A | Amine derivative and dermatologic preparation containing the same | Human Necessities | 11 | Expired |
| US5175321A | Amide derivatives and dermatologic preparations containing the same | Chemistry; Metallurgy | 10 | Expired |
| US6878378B1 | External skin care composition | Human Necessities | 9 | Expired |
| US5783601A | External skin-care composition | Human Necessities | 9 | Expired |
| US6616708B2 | Hair dye composition | Human Necessities | 7 | Expired |
| US6547834B1 | Hair dye composition | Human Necessities | 5 | Expired |
| US5552445A | Composition for external skin care | Human Necessities | 5 | Expired |
| US5801258A | Amide derivatives and dermatologic preparations containing the same | Chemistry; Metallurgy | 3 | Expired |
| US5446027A | Amide derivative and external skin care preparation containing the same | Chemistry; Metallurgy | 3 | Expired |
| US5659052A | Amide derivatives and dermatologic preparations containing the same | Chemistry; Metallurgy | 3 | Expired |
| US5221757A | Amide derivatives and dermatologic preparations containing the same | Chemistry; Metallurgy | 3 | Expired |
| US6746493B2 | Hair dye composition | Human Necessities | 2 | Expired |
| US5466442A | Cholesteryl silicone derivative and cosmetic composition comprising the same | Human Necessities | 1 | Expired |
| US5681864A | Composition for external skin care | Human Necessities | 1 | Expired |
| US6648924B2 | Hair dye composition | Human Necessities | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.