Inventor · disambiguated record
Freimund Rohrscheid
Also filed as: ROEHRSCHEID FREIMUND · ROHRSCHEID FREIMUND
15 granted patents·77 citations·filing 1974–1995
92Inventor score
Files withHOECHST AG15
Top patents by PatentIndex Score
15 records- 0175US4987238AProcess for the preparation of high-purity 5,5'-[2,2,2-trifluoro-1-(trifluoromethyl)-ethylidene]bis-1,3-isobenzofurandioneHOECHST AG·Filed 1989·Granted Jan 22, 1991·12 cites·14 claims
- 0270US5004797APartly fluorinated carboxylic acids and derivatives thereof, processes for their preparation and their useHOECHST AG·Filed 1988·Granted Apr 2, 1991·9 cites·23 claims
- 0368US5110983AHexafluoroisopropyl-containing monomers, process for their preparation and their useHOECHST AG·Filed 1990·Granted May 5, 1992·10 cites·1 claims
- 0464US5637764AProcess for the preparation of brominated or chlorinated aromatic carboxylic acidsHOECHST AG·Filed 1995·Granted Jun 10, 1997·10 cites·17 claims
- 0556US4748278AProcess for the isolation of p-hydroxybenzaldehydeHOECHST AG·Filed 1986·Granted May 31, 1988·4 cites·2 claims
- 0655US5523472AProcess for the preparation of 5-fluoroanthranilic acidHOECHST AG·Filed 1994·Granted Jun 4, 1996·5 cites·38 claims
- 0754US5175351AProcess for the preparation of alkanesulfonylbenzoic acidsHOECHST AG·Filed 1992·Granted Dec 29, 1992·5 cites·20 claims
- 0852US4001192ATransparent polyamides from bis(aminomethyl)-norbornanesHOECHST AG·Filed 1974·Granted Jan 4, 1977·8 cites·4 claims
- 0951US4772754AProcess for the isolation of p-hydroxybenzaldehydeHOECHST AG·Filed 1987·Granted Sep 20, 1988·3 cites·7 claims
- 1047US5300717AProcess for the preparation of dixylylpropaneHOECHST AG·Filed 1993·Granted Apr 5, 1994·3 cites·14 claims
- 1146US5274126APartially fluorinated tetracarboxylic acid and the dianhydride thereof, a process for their preparation and their useHOECHST AG·Filed 1992·Granted Dec 28, 1993·3 cites·25 claims
- 1245US4097492AProcess for the preparation of naphthalene-1,4,5,8-tetracarboxylic acidHOECHST AG·Filed 1976·Granted Jun 27, 1978·2 cites·31 claims
- 1341US5288908AProcess for the preparation of fluorine containing monomersHOECHST AG·Filed 1993·Granted Feb 22, 1994·2 cites·15 claims
- 1438US5153334APartially fluorinated tetracarboxylic acid and the dianhydride thereofHOECHST AG·Filed 1991·Granted Oct 6, 1992·1 cites·1 claims
- 1532US5202469APartially fluorinated dicarboxylic acid and the acid chloride thereof, and a process for their preparationHOECHST AG·Filed 1991·Granted Apr 13, 1993·0 cites·25 claims
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