Inventor · disambiguated record
Ulrich Heywang
Also filed as: HEYWANG ULRICH
21 granted patents·2 pending applications·521 citations·filing 1991–2001
95Inventor score
Top patents by PatentIndex Score
23 records- 0197US5730960ABenzylidenenorcamphor derivativesMERCK PATENT GMBH·Filed 1995·Granted Mar 24, 1998·188 cites·11 claims
- 0297US5705169AKetotricyclo .5.2.1.0! decane derivativesMERCK PATENT GMBH·Filed 1995·Granted Jan 6, 1998·184 cites·10 claims
- 0385US6440401B12-phenyl-benzimidazolesulfonic acids as UV-B filtersMERCK PATENT GMBH·Filed 2001·Granted Aug 27, 2002·15 cites·25 claims
- 0480US5520906ATriazine derivatives with UV filter propertiesMERCK PATENT GMBH·Filed 1993·Granted May 28, 1996·21 cites·20 claims
- 0574US6593476B2Process for the preparation of UV filter substancesMERCK PATENT GMBH·Filed 2001·Granted Jul 15, 2003·7 cites·13 claims
- 0674US5718906ALight-stable cosmetic compositionMERCK PATENT GMBH·Filed 1995·Granted Feb 17, 1998·17 cites·15 claims
- 0767US5817862AProcess for the preparation of cinnamic acid derivativesMERCK PATENT GMBH·Filed 1995·Granted Oct 6, 1998·12 cites·16 claims
- 0863US5501850AUse of benzimidazole derivatives as light protection filtersMERCK PATENT GMBH·Filed 1993·Granted Mar 26, 1996·28 cites·11 claims
- 0963US5144081ADialkoxybenzylidene-camphor derivativesMERCK PATENT GMBH·Filed 1991·Granted Sep 1, 1992·16 cites·9 claims
- 1055US5473079AProcess for preparing 2-arylbenzimidazole-5-sulfonic acidsMERCK PATENT GMBH·Filed 1993·Granted Dec 5, 1995·13 cites·8 claims
- 1153US5677314ABis(methylidene)phenylene derivativesMERCK PATENT GMBH·Filed 1995·Granted Oct 14, 1997·5 cites·15 claims
- 1252US2002016349A1UV-B filtersMERCK PATENT GMBH·Filed 2001·Application pending·0 cites
- 1343US6140507AMethod for debenzylation of dibenzylbiotinMERCK PATENT GMBH·Filed 1998·Granted Oct 31, 2000·2 cites·10 claims
- 1443US5600007AUse of α-hydroxyketoalkyl derivatives as light protection filtersMERCK GMBH·Filed 1993·Granted Feb 4, 1997·4 cites·8 claims
- 1537US5399563ABenzylidenequinuclidinonesMERCK PATENT GMBH·Filed 1993·Granted Mar 21, 1995·3 cites·13 claims
- 1635US2003149278A1Method for preparing (+)-biotineFiled 2001·Application pending·0 cites
- 1734US5968482Aα-hydroxyketoalkyl derivatives as light protection filtersMERCK PATENT GMBH·Filed 1996·Granted Oct 19, 1999·1 cites·5 claims
- 1833US5180837APilosinine derivativesMERCK PATENT GMBH·Filed 1991·Granted Jan 19, 1993·1 cites·6 claims
- 1931US5639883AProcess for preparing substituted 4-methylidenecinnamic acid derivativesMERCK PATENT GMBH·Filed 1995·Granted Jun 17, 1997·2 cites·16 claims
- 2031US5275941AProcess for the preparation of N-protected dialkyl (2S,3S)-3-ethylaspartatesMERCK PATENT GMBH·Filed 1991·Granted Jan 4, 1994·1 cites·6 claims
- 2130US5714629AProcess for the preparation of thioglycolic acid alkyl estersMERCK PATENT GMBH·Filed 1995·Granted Feb 3, 1998·1 cites·20 claims
- 2229US6277357B1Ketotricyclo[5.2.1.0]decane derivativesMERCK PATENT GMBH·Filed 1993·Granted Aug 21, 2001·0 cites·11 claims
- 2329US5628988AKetotricyclo[5.2.1.0]decane derivativesMERCK PATENT GMBH·Filed 1996·Granted May 13, 1997·0 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →