Inventor · disambiguated record
Stephen Lachhein
Also filed as: LACHHEIN STEPHEN
16 granted patents·89 citations·filing 1984–1999
91Inventor score
Top patents by PatentIndex Score
16 records- 0193US4599207AProcess for the preparation of phosphorus-containing cyanohydrin derivativesHOECHST AG·Filed 1984·Granted Jul 8, 1986·34 cites·7 claims
- 0286US4824949AProcess for the preparation of pyrimidinesHOECHST AG·Filed 1987·Granted Apr 25, 1989·23 cites·16 claims
- 0370US4831138AProcess for the preparation of aminopyrimidinesHOECHST AG·Filed 1987·Granted May 16, 1989·9 cites·10 claims
- 0454US5166385AProcess for the preparation of phosphino compoundsHOECHST AG·Filed 1991·Granted Nov 24, 1992·7 cites·15 claims
- 0552US5155222AProcess for the preparation of n-alkylsulfonylaminosulfonylureasHOECHST AG·Filed 1991·Granted Oct 13, 1992·4 cites·20 claims
- 0652US4792610AProcess for the preparation of 5-phenylsulfinyl-1H-2-(methoxycarbonylamino)-benzimidazoleHOECHST AG·Filed 1987·Granted Dec 20, 1988·3 cites·7 claims
- 0747US6365739B1Process for the preparation of 4,6-disubstituted 2-isocyanatopyrimidines and their use as intermediates for active compound synthesesHOECHST SCHERING AGREVO GMBH·Filed 1999·Granted Apr 2, 2002·3 cites·16 claims
- 0847US5013444AProcess for separating off enol ethers from reaction mixtures containing alcoholsHOECHST AG·Filed 1990·Granted May 7, 1991·3 cites·17 claims
- 0940US5414084AProcess for the preparation of sulfonylureasHOECHST AG·Filed 1992·Granted May 9, 1995·1 cites·6 claims
- 1038US4960887AProcess for the preparation of pyrimidinesHOECHST AG·Filed 1988·Granted Oct 2, 1990·1 cites·10 claims
- 1137US5070201AProcess for the preparation of aminopyrimidinesHOECHST AG·Filed 1990·Granted Dec 3, 1991·1 cites·9 claims
- 1232US5208337AProcess for the preparation of aminopyrimidinesHOECHST AG·Filed 1991·Granted May 4, 1993·0 cites·10 claims
- 1330US5157121AProcess for the preparation of n-alkylsulfonylaminosulfonylureasHOECHST AG·Filed 1991·Granted Oct 20, 1992·0 cites·21 claims
- 1429US5294741AContinuous process for the preparation of sulfonylisocyanatesHOECHST AG·Filed 1992·Granted Mar 15, 1994·0 cites·20 claims
- 1529US5159086AProcess for the preparation of pyrazolecarboxylic acid derivativesHOECHST AG·Filed 1991·Granted Oct 27, 1992·0 cites·6 claims
- 1629US5124470AProcess for the preparation of arylalkylmethylsilanesHOECHST AG·Filed 1991·Granted Jun 23, 1992·0 cites·3 claims
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