Otto Machhammer
51Patents
13h-index
108Co-inventors
87Inventor score
Filing activity: Mar 5, 1996 → Mar 26, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5817865A | Preparation of acrylic acid and esters | Emerging Cross-Sectional Technologies | 41 | Expired |
| US5831124A | Purification of acrylic acid and methacrylic acid | Chemistry; Metallurgy | 38 | Expired |
| US6781017B2 | Method for the production of acrolein or acrylic acid or the mixture thereof from propane | Chemistry; Metallurgy | 33 | Expired |
| US5705684A | Preparation of acrolein, acrylic acid or a mixture thereof from propane | Chemistry; Metallurgy | 33 | Expired |
| US6448439B1 | Method for producing acrylic acid and methacrylic acid | Chemistry; Metallurgy | 29 | Expired |
| US6646161B1 | Method for the fractional condensation of a hot gas mixture containing acrylic acid or methacrylic acid and having a high proportion of non-condensable constituents | Chemistry; Metallurgy | 16 | Expired |
| US7253316B2 | Flexible method for the joint production of (i) formic acid, (ii) a carboxylic acid comprising at least two carbon atoms and/or the derivatives thereof, and (iii) a carboxylic acid anhydride | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6596901B1 | Method for purifying acrylic acid and methacrylic acid | Chemistry; Metallurgy | 15 | Expired |
| US7238827B2 | Preparation of at least one partial oxidation and/or ammoxidation product of propylene | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5684188A | Continuous heterogeneously catalyzed gas-phase oxidation of propylene to acrolein, acrylic acid or a mixture thereof | Chemistry; Metallurgy | 14 | Expired |
| US6410785B1 | Method for producing acrolein by heterogeneous catalytic gas-phase partial oxidation of propene | Chemistry; Metallurgy | 13 | Expired |
| US7291761B2 | Partial dehydrogenation method using continuous heterogeneous catalysis | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6413379B1 | Continuous recovery of (meth)acrylic acid | Emerging Cross-Sectional Technologies | 13 | Expired |
| US7087802B2 | Method for the dehydrogenation of hydrocarbons | Emerging Cross-Sectional Technologies | 12 | Expired |
| US7321058B2 | Method for producing acrolein and/or acrylic acid | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6426433B1 | Method for producing acrolein and/or acrylic acid from propane | Chemistry; Metallurgy | 11 | Expired |
| US6433222B1 | Method for producing acrylic acid | Chemistry; Metallurgy | 10 | Expired |
| US7388109B2 | Preparation of acrolein or acrylic acid or a mixture thereof from propane | Chemistry; Metallurgy | 9 | Active |
| US6423875B1 | Method for producing acrolein and/or acrylic acid from propane | Chemistry; Metallurgy | 9 | Expired |
| US7173143B2 | Integrated method for synthesis propylene oxide | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6090977A | Continuous heterogeneously catalyzed gas-phase partial oxidation of an organic compound | Chemistry; Metallurgy | 8 | Expired |
| US7348443B2 | Method for producing partial oxidation products and/or partial ammoxidation products of at least one olefinic hydrocarbon | Chemistry; Metallurgy | 8 | Expired |
| US6350906B1 | Continuous recovery of (meth)acrylic acid | Chemistry; Metallurgy | 7 | Expired |
| US6740779B1 | Method for carrying out the catalytic gas phase oxidation of propene to form acrylic acid | Chemistry; Metallurgy | 7 | Expired |
| US6727383B1 | Method for producing acrylic acid and acrylic acid esters | Chemistry; Metallurgy | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.