Inventor · disambiguated record
Bernhard Wojtech
Also filed as: EHLERS KLAUS P · WOJTECH BERNHARD
10 granted patents·128 citations·filing 1975–1990
88Inventor score
Files withHOECHST AG10
Top patents by PatentIndex Score
10 records- 0188US5073622AProcess for the preparation of novolak resins with low metal ion contentHOECHST AG·Filed 1990·Granted Dec 17, 1991·61 cites·25 claims
- 0284US4373073AProcess for the preparation of glycidyl ethers of monohydric or polyhydric phenols, the glycidyl ethers and use thereofHOECHST AG·Filed 1980·Granted Feb 8, 1983·22 cites·10 claims
- 0379US4720577AProcess for the extraction of carboxylic acids from dilute aqueous solutionsHOECHST AG·Filed 1985·Granted Jan 19, 1988·19 cites·10 claims
- 0465US4626605AProcess for extracting phenols from aqueous solutionsHOECHST AG·Filed 1985·Granted Dec 2, 1986·8 cites·7 claims
- 0549US4196180APurification of phosphoric acid by means of organic solventsHOECHST AG·Filed 1978·Granted Apr 1, 1980·7 cites·14 claims
- 0645US5068358AProcess for extracting n-methyl-2-pyrrolidoneHOECHST AG·Filed 1989·Granted Nov 26, 1991·2 cites·17 claims
- 0735US3996336APurification of phosphoric acidHOECHST AG·Filed 1975·Granted Dec 7, 1976·3 cites·6 claims
- 0830US4986974AProcess for the separation of halogenated hydrocarbons from hydrochloric acidHOECHST AG·Filed 1989·Granted Jan 22, 1991·2 cites·13 claims
- 0925US4814518AProcess for extracting nitrohydroxyaromatics from aqueous solutionsHOECHST AG·Filed 1987·Granted Mar 21, 1989·4 cites·16 claims
- 1023US4864065AProcess for removing halogenated hydroxyaromatics from aqueous solutionsHOECHST AG·Filed 1988·Granted Sep 5, 1989·0 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →