Karl-Heinz Etzbach
152Patents
20h-index
119Co-inventors
93Inventor score
Filing activity: Jan 4, 1982 → Nov 13, 2006
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5719288A | Pyridone dyes | Chemistry; Metallurgy | 103 | Expired |
| US5833880A | Polymerizable liquid-crystalline compounds | Chemistry; Metallurgy | 84 | Expired |
| US4631328A | Polymers containing mesogenic groups and dye radicals in the side chains | Chemistry; Metallurgy | 76 | Expired |
| US5780629A | Polymerizable, chiral compounds and their use | Chemistry; Metallurgy | 70 | Expired |
| US5518824A | Electroluminescent arrangement | Emerging Cross-Sectional Technologies | 66 | Expired |
| US5798147A | Process for coating and printing substrates | Chemistry; Metallurgy | 60 | Expired |
| US5162545A | Malonic acid dyes and polycondensation products thereof | Chemistry; Metallurgy | 54 | Expired |
| US6136225A | Polymerizable liquid-crystalline compounds | Chemistry; Metallurgy | 47 | Expired |
| US5922481A | Electroluminescent arrangement | Emerging Cross-Sectional Technologies | 44 | Expired |
| US5886242A | Polymerizable, chiral compounds and their use | Chemistry; Metallurgy | 36 | Expired |
| US5744057A | Polymerizable, chiral compounds, and use thereof | Chemistry; Metallurgy | 35 | Expired |
| US4702945A | Optical recording medium | Physics | 34 | Expired |
| US4943617A | Liquid crystalline copolymer | Chemistry; Metallurgy | 33 | Expired |
| US5079365A | Triazolopyridine dyes and thermal transfer of methine dyes | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4843153A | Azo dyes containing thienothiophene radicals as radicals of the diazo component | Chemistry; Metallurgy | 26 | Expired |
| US5384378A | Copolymers with non-linear optical properties and the use thereof | Chemistry; Metallurgy | 23 | Expired |
| US4667020A | Aromatic disazo dyes and liquid-crystalline materials containing these dyes | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5738806A | Thienothienylazoanilines in nonlinear optics | Physics | 21 | Expired |
| US6048968A | Cationic azo dyes based on aminobenzoic acid | Chemistry; Metallurgy | 21 | Expired |
| US4880769A | Transfer of catinic dyes in their deprotonated, electrically neutral form | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5332520A | Liquid-crystalline polymers of virtually uniform molecular weight | Chemistry; Metallurgy | 20 | Expired |
| US4556622A | Electrophotographic recording material whose photoconductor layer contains a halogenated perylene dye sensitizer | Physics | 19 | Expired |
| US5696243A | Diphenylamine compounds, polymers prepared therefrom and non-linear optics devices containing the same | Physics | 18 | Expired |
| US5132438A | Bichromophoric methine and azamethine dyes and process for transferring them | Performing Operations; Transporting | 17 | Expired |
| US6136251A | Process for producing pigment particles of defined shape and size | Chemistry; Metallurgy | 16 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.