Inventor · disambiguated record
Friedrich Wirth
Also filed as: WIRTH FRIEDRICH · WIRTH FRIEDRICH DIPL CHEM DR
12 granted patents·151 citations·filing 1974–1983
91Inventor score
Files withBASF AG12
Top patents by PatentIndex Score
12 records- 0188US4077984AManufacture of phthalic anhydride from o-xylene or naphthaleneBASF AG·Filed 1976·Granted Mar 7, 1978·25 cites·5 claims
- 0287US4282116ASupported catalyst containing vanadium and titanium and/or zirconium for the preparation of phthalic anhydrideBASF AG·Filed 1980·Granted Aug 4, 1981·25 cites·2 claims
- 0378US4568427AContinuous isolation of phthalic anhydride and maleic anhydride from reaction gasesBASF AG·Filed 1983·Granted Feb 4, 1986·15 cites·5 claims
- 0476US4008255ARecovery of phthalic anhydrideBASF AG·Filed 1975·Granted Feb 15, 1977·14 cites·6 claims
- 0574US4036783ASupported catalyst containing vanadium and titaniumBASF AG·Filed 1976·Granted Jul 19, 1977·22 cites·3 claims
- 0666US4007136ASupported catalyst for the oxidation of o-xylene and/or naphthalene to phthalic anhydrideBASF AG·Filed 1975·Granted Feb 8, 1977·7 cites·1 claims
- 0763US4096094ASupported catalysts containing vanadium pentoxide and titanium dioxideBASF AG·Filed 1976·Granted Jun 20, 1978·15 cites·3 claims
- 0859US3965126ARecovering maleic anhydride from the effluent from the production of phthalic anhydrideBASF AG·Filed 1974·Granted Jun 22, 1976·7 cites·7 claims
- 0956US4411818AReactivation of vanadium-containing oxidation catalystsBASF AG·Filed 1982·Granted Oct 25, 1983·5 cites·4 claims
- 1052US4324694ASupported catalysts containing vanadium pentoxide, titanium dioxide, phosphorus, rubidium and/or cesium, with or without zirconium dioxideBASF AG·Filed 1980·Granted Apr 13, 1982·11 cites·12 claims
- 1144US4369327APreparation of phthalic anhydrideBASF AG·Filed 1981·Granted Jan 18, 1983·3 cites·6 claims
- 1227US4489775ADesublimator for isolating sublimation products from reaction gasesBASF AG·Filed 1981·Granted Dec 25, 1984·2 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →