Inventor · disambiguated record
Winfried Orth
Also filed as: ORTH WINFRIED
25 granted patents·135 citations·filing 1972–1993
95Inventor score
Top patents by PatentIndex Score
25 records- 0188US4659846APreparation of 2,5-diloweralkyl-1.4:3,6-dianhydrosorbitolsRUETGERSWERKE AG·Filed 1986·Granted Apr 21, 1987·25 cites·7 claims
- 0280US4567272APyrrole containing 2-aminonitropyridine derivativesRUETGERSWERKE AG·Filed 1984·Granted Jan 28, 1986·43 cites·4 claims
- 0371US4377699A5-Chloro-indole preparationRUETGERSWERKE AG·Filed 1981·Granted Mar 22, 1983·7 cites·10 claims
- 0465US4785110AProcess for the production of 2-amino-3-nitro-6-(4-fluorobenzylamino)-pyridineDEGUSSA·Filed 1986·Granted Nov 15, 1988·7 cites·7 claims
- 0565US4546190AMethod for producing 3,5,6-trichloro-1H-pyridine-2-onRUETGERSWERKE AG·Filed 1984·Granted Oct 8, 1985·5 cites·5 claims
- 0657US5169990APreparation of 9,9-bis-(4-hydroxyphenyl)-fluoreneRUETGERSWERKE AG·Filed 1992·Granted Dec 8, 1992·6 cites·5 claims
- 0757US5149886APreparation of 9,9-bis-(4-hydroxyphenyl)-fluoreneRUETGERSWERKE AG·Filed 1992·Granted Sep 22, 1992·6 cites·9 claims
- 0856US4942239AProcess for the production of 2-hydroxypyridineRUETGERSWERKE AG·Filed 1989·Granted Jul 17, 1990·4 cites·5 claims
- 0956US4549024AOxidation of quinoline to quinolinic acidRUETGERSWERKE AG·Filed 1984·Granted Oct 22, 1985·3 cites·6 claims
- 1055US5380862APreparation of isomer-free 2,5-dichloro-pyridineRUETGERSWERKE AG·Filed 1993·Granted Jan 10, 1995·6 cites·16 claims
- 1155US4719298ASide chain chlorination process of heterocyclesRUETGERSWERKE AG·Filed 1986·Granted Jan 12, 1988·4 cites·5 claims
- 1255US4529800ANovel process for the preparation of 2-halo-3-nitro-6-alkoxy-pyridinesRUETGERSWERKE AG·Filed 1983·Granted Jul 16, 1985·3 cites·6 claims
- 1347US4582910AMethod for preparation of 4-halogenonaphthalic acid anhydridesRUETGERSWERKE AG·Filed 1985·Granted Apr 15, 1986·3 cites·22 claims
- 1445US5082944AProduction of pyridine-3-sulfonic acidRUETGERSWERKE AG·Filed 1990·Granted Jan 21, 1992·3 cites·3 claims
- 1544US4228083AProcess for the production of β-(5-nitro-2-furyl)-acroleinRUETGERSWERKE AG·Filed 1979·Granted Oct 14, 1980·1 cites·9 claims
- 1644US3954891AMethod of making substituted hydroquinonesRUETGERSWERKE AG·Filed 1972·Granted May 4, 1976·2 cites·18 claims
- 1743US5066806ANovel separation processRUETGERSWERKE AG·Filed 1990·Granted Nov 19, 1991·2 cites·9 claims
- 1843US4510090AMethod for the production of phenanthrenequinoneRUETGERSWERKE AG·Filed 1984·Granted Apr 9, 1985·3 cites·4 claims
- 1943US4256892APreparation of bis-2-pyridyl-disulfidesRUETGERSWERKE AG·Filed 1979·Granted Mar 17, 1981·1 cites·8 claims
- 2036US4925942APreparation of quinuclidine-3-methanolRUETGERSWERKE AG·Filed 1989·Granted May 15, 1990·1 cites·1 claims
- 2132US4564700AProcess for the preparation of fluorene-9-carboxylic acidRUETGERSWERKE AG·Filed 1983·Granted Jan 14, 1986·0 cites·6 claims
- 2232US4493935APreparation of 1H-pyrrol-2-acetic acid estersRUETGERSWERKE AG·Filed 1984·Granted Jan 15, 1985·0 cites·11 claims
- 2330US4357277ANovel process for the preparation of N,N'-bisacyl hydrazidesRUETGERSWERKE AG·Filed 1981·Granted Nov 2, 1982·0 cites·9 claims
- 2430US4332728AProcess for the preparation of bisacyl hydrazinesRUETGERSWERKE AG·Filed 1981·Granted Jun 1, 1982·0 cites·7 claims
- 2529US4865620AHair dye compositionRUETGERSWERKE AG·Filed 1988·Granted Sep 12, 1989·0 cites·11 claims
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