Helmut Degen
17Patents
4h-index
28Co-inventors
56Inventor score
Filing activity: Mar 5, 1982 → May 17, 1995
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4405330A | Navy disperse dye mixtures | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5466790A | Azo dyes with an acetalized diazo component of the thiophene or thiazole series | Chemistry; Metallurgy | 8 | Expired |
| US4389216A | Navy dye mixtures | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4908041A | Navy and black dye mixtures: thiophene azo disperse dye and red, yellow or orange disperse dye | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4386934A | Navy dye mixtures | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4537597A | Navy blue mixtures of disperse mono-azo dyes for cellulose acetate | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5270456A | Azo dyes with A2-aminothiophene dye azo component and a coupling component and coupling component of the diphenylamine series | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5330543A | Thiopheneazo dyes with a coupling component of the diaminopyridine series | Emerging Cross-Sectional Technologies | 2 | Expired |
| US5062861A | Novel navy and black disperse dye mixtures including amino-phenyl thiophene azo disperse dye and red, yellow or orange disperse dyes | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4464181A | Mixtures of benzisothiazole mono-azo dyes for cellulose acetate | Emerging Cross-Sectional Technologies | 2 | Expired |
| US5382263A | Blue dye mixtures of high brilliance | Textiles; Paper | 2 | Expired |
| US4486198A | Navy dye mixtures | Emerging Cross-Sectional Technologies | 1 | Expired |
| US5318601A | Dye mixtures containing azo and quinophthalone dyes | Emerging Cross-Sectional Technologies | 0 | Expired |
| US5364972A | Preparation of nitrobenzophenones, and a color-stable modification of a benzophenone-azopyridone dye | Chemistry; Metallurgy | 0 | Expired |
| US5547477A | Dye mixtures with pyridoneazo dyes | Chemistry; Metallurgy | 0 | Expired |
| US4925954A | Vat dye based on flouranthene | Chemistry; Metallurgy | 0 | Expired |
| US5502170A | Azo dyes with an acetalized diazo component of the thiophene or thiazole series | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.