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name:-0.00043296813964844
name:-0.014470100402832
name:-0.00058817863464355
Duembgen; Gerd Patent Filings

Duembgen; Gerd

Patent Applications and Registrations

Patent applications and USPTO patent grants for Duembgen; Gerd.The latest application filed is for "compositions of the formula mo.sub.12 p.sub.a v.sub.b x.sup.1 c x.sup.2 d x.sup.3 e sb.sub.f re.sub.g s.sub.h o.sub.n".

Company Profile
0.13.0
  • Duembgen; Gerd - Ludwigshafen DE
  • Duembgen; Gerd - Dannstadt-Schauernheim DE
  • Duembgen; Gerd - Dannstadt DT
*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.
Patent Activity
PatentDate
Compositions of the formula Mo.sub.12 P.sub.a V.sub.b X.sup.1 c X.sup.2 d X.sup.3 e Sb.sub.f Re.sub.g S.sub.h O.sub.n
Grant 5,221,767 - Boehning , et al. June 22, 1
1993-06-22
Preparation of methacrylic acid
Grant 5,087,744 - Krabetz , et al. February 11, 1
1992-02-11
Process and catalyst for the preparation of methacrylic acid
Grant 4,925,823 - Krabetz , et al. May 15, 1
1990-05-15
Preparation of methanol
Grant 4,623,668 - Broecker , et al. November 18, 1
1986-11-18
Preparation of methacrylic acid and catalyst therefor
Grant 4,595,778 - Duembgen , et al. June 17, 1
1986-06-17
Catalyst for the preparation of methyl methacrylate
Grant 4,520,125 - Baer , et al. May 28, 1
1985-05-28
Process for the preparation of .alpha.-alkylacroleins
Grant 4,496,770 - Duembgen , et al. January 29, 1
1985-01-29
Preparation of .alpha.,.beta.-olefinically unsaturated aldehydes of 3 or 4 carbon atoms
Grant 4,298,763 - Engelbach , et al. November 3, 1
1981-11-03
Catalyst for the oxidation of acrolein and methacrolein to acrylic acid and methacrylic acid, respectively
Grant 4,259,211 - Krabetz , et al. March 31, 1
1981-03-31
Method of separating high-boiling or non-volatile materials
Grant 4,110,370 - Engelbach , et al. August 29, 1
1978-08-29
Catalytic oxidation of .alpha.-olefins
Grant 4,052,450 - Krabetz , et al. October 4, 1
1977-10-04
Manufacture of acrylic acid by oxidation of propylene with oxygen-containing gases in two separate catalyst stages
Grant 4,031,135 - Engelbach , et al. June 21, 1
1977-06-21
Recovering anhydrous acrylic acid
Grant 3,932,500 - Duembgen , et al. January 13, 1
1976-01-13

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