Udo Eckstein
23Patents
9h-index
27Co-inventors
75Inventor score
Filing activity: Oct 27, 1977 → Feb 28, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4670882A | Dyestuff laser | Electricity | 20 | Expired |
| US4317782A | Distyryl compounds | Electricity | 19 | Expired |
| US4326066A | Triazolyl coumarin compounds, processes for their preparation and their use as whiteners and laser dyestuffs | Textiles; Paper | 19 | Expired |
| US4510311A | Water-insoluble azolystyryl optical brighteners | Chemistry; Metallurgy | 15 | Expired |
| US4888128A | Paper-coating slips containing fluorescent brighteners | Textiles; Paper | 13 | Expired |
| US4783196A | Highly concentrated stable solutions of color-forming agents: for pressure-sensitive recording materials | Performing Operations; Transporting | 13 | Expired |
| US5094688A | Triarylmethane color-forming agents | Performing Operations; Transporting | 11 | Expired |
| US5097034A | Triarylmethane color formers | Chemistry; Metallurgy | 10 | Expired |
| US4923641A | Highly concentrated stable solutions of color-forming agent: for pressure-sensitive recording materials | Performing Operations; Transporting | 10 | Expired |
| US6025490A | Process for the preparation of substituted 4,4'-diaminostilbene-2,2'-disulphonic acids | Chemistry; Metallurgy | 5 | Expired |
| US4812569A | Chromogenic phthalides | Chemistry; Metallurgy | 4 | Expired |
| US4897223A | Tri-phenyl methyl color-forming agents | Chemistry; Metallurgy | 4 | Expired |
| US4166176A | Fluorescent dyestuffs | Chemistry; Metallurgy | 3 | Expired |
| US6121444A | Process for preparing substituted 4,4'-diaminostilbene-2,2'-disulphonic acid salts | Textiles; Paper | 3 | Expired |
| US4184977A | Fluorescent dyestuffs | Chemistry; Metallurgy | 3 | Expired |
| US5189188A | Bis(triarylmethane) compounds | Chemistry; Metallurgy | 2 | Expired |
| US4140852A | Triazinyl styryl-benzoxazole fluorescent dyestuffs | Chemistry; Metallurgy | 1 | Expired |
| US5233048A | Triarylmethane color formers | Chemistry; Metallurgy | 1 | Expired |
| US4610807A | Distyryl compounds | Chemistry; Metallurgy | 1 | Expired |
| US6248887A | Process for preparing bis-alkoxy-triazinyl-amino-containing stilbene disulphonic acids or their derivatives | Textiles; Paper | 1 | Expired |
| US4563532A | Process for the preparation of .DELTA..sup.4 -1,3,4-oxadiazolin-2-one compounds | Chemistry; Metallurgy | 0 | Expired |
| US6387296B1 | Optically brightened plastics for optically brightening paper-coating compounds and paper-coating compounds optically brightened in this manner | Textiles; Paper | 0 | Expired |
| US6339117B2 | Whitened polymers and the use thereof in coating slips for coating substrates | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.