Inventor · disambiguated record
Gerd Duembgen
Also filed as: DUEMBGEN GERD
17 granted patents·695 citations·filing 1972–1992
96Inventor score
Files withBASF AG17
Top patents by PatentIndex Score
17 records- 0197US4496770AProcess for the preparation of α-alkylacroleinsBASF AG·Filed 1983·Granted Jan 29, 1985·111 cites·10 claims
- 0296US3932500ARecovering anhydrous acrylic acidBASF AG·Filed 1972·Granted Jan 13, 1976·73 cites·6 claims
- 0395US4259211ACatalyst for the oxidation of acrolein and methacrolein to acrylic acid and methacrylic acid, respectivelyBASF AG·Filed 1978·Granted Mar 31, 1981·89 cites·8 claims
- 0494US4031135AManufacture of acrylic acid by oxidation of propylene with oxygen-containing gases in two separate catalyst stagesBASF AG·Filed 1975·Granted Jun 21, 1977·44 cites·3 claims
- 0590US5087744APreparation of methacrylic acidBASF AG·Filed 1988·Granted Feb 11, 1992·39 cites·6 claims
- 0690US4298763APreparation of α,β-olefinically unsaturated aldehydes of 3 or 4 carbon atomsBASF AG·Filed 1980·Granted Nov 3, 1981·39 cites·3 claims
- 0789US4110370AMethod of separating high-boiling or non-volatile materialsBASF AG·Filed 1975·Granted Aug 29, 1978·26 cites·5 claims
- 0886US5173468ACompositions of the formula MO12 Pa Vb X1c X2d X3e Sbf Reg Sh OnBASF AG·Filed 1991·Granted Dec 22, 1992·57 cites·5 claims
- 0985US4623668APreparation of methanolBASF AG·Filed 1984·Granted Nov 18, 1986·36 cites·1 claims
- 1082US4520125ACatalyst for the preparation of methyl methacrylateBASF AG·Filed 1984·Granted May 28, 1985·35 cites·1 claims
- 1181US5221767ACompositions of the formula Mo12 Pa Vb X1 c X2 d X3 e Sbf Reg Sh OnBASF AG·Filed 1992·Granted Jun 22, 1993·43 cites·4 claims
- 1278US4925823AProcess and catalyst for the preparation of methacrylic acidBASF AG·Filed 1986·Granted May 15, 1990·32 cites·3 claims
- 1378US4052450ACatalytic oxidation of α-olefinsBASF AG·Filed 1973·Granted Oct 4, 1977·25 cites·17 claims
- 1464US4638085APreparation of methyl methacrylate from methacroleinBASF AG·Filed 1984·Granted Jan 20, 1987·16 cites·2 claims
- 1563US4595778APreparation of methacrylic acid and catalyst thereforBASF AG·Filed 1984·Granted Jun 17, 1986·16 cites·10 claims
- 1660US4192807AManufacture of γ-butyrolactone from maleic anhydrideBASF AG·Filed 1977·Granted Mar 11, 1980·4 cites·5 claims
- 1744US4301126AProcess for destroying phosgeneBASF AG·Filed 1980·Granted Nov 17, 1981·10 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →