Herwig Hoffmann
35Patents
12h-index
68Co-inventors
84Inventor score
Filing activity: Feb 21, 1973 → Nov 14, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4014933A | Production of amines from alcohols | Performing Operations; Transporting | 79 | Expired |
| US4778929A | Continuous hydroformylation of olefinically unsaturated compounds | Chemistry; Metallurgy | 51 | Expired |
| US5191044A | Preparation of polyisobutene | Chemistry; Metallurgy | 44 | Expired |
| US4189566A | Polymerization of tetrahydrofuran | Chemistry; Metallurgy | 31 | Expired |
| US4370491A | Continuous preparation of acetic acid esters | Emerging Cross-Sectional Technologies | 31 | Expired |
| US4009124A | Basic mixed carbonate of copper and aluminum and process for manufacturing a copper-containing catalyst | Chemistry; Metallurgy | 28 | Expired |
| US4288640A | Carrying out exothermic reactions between a gas and a liquid | Performing Operations; Transporting | 21 | Expired |
| US4243799A | Polymerization of tetrahydrofuran | Chemistry; Metallurgy | 21 | Expired |
| US6765119B2 | Method of producing saturated C3-C20-alcohols | Chemistry; Metallurgy | 17 | Expired |
| US5123932A | Motor fuel compositions containing alkoxylation products | Chemistry; Metallurgy | 15 | Expired |
| US4001344A | Catalyst for partial hydrogenation | Chemistry; Metallurgy | 13 | Expired |
| US4262140A | Production of anhydrous or substantially anhydrous formic acid | Chemistry; Metallurgy | 12 | Expired |
| US4014914A | Manufacture of 4,4'-diphenylmethane diisocyanate and a mixture of diisocyanates and polyisocyanates | Chemistry; Metallurgy | 11 | Expired |
| US4048116A | Catalyst for the hydrogenation of acetylene alcohols | Chemistry; Metallurgy | 10 | Expired |
| US4259531A | Polymerization of tetrahydrofuran to prepare polytetramethylene ether glycols | Chemistry; Metallurgy | 8 | Expired |
| US3972938A | Manufacture of hexamethylene diamine | Chemistry; Metallurgy | 7 | Expired |
| US3975400A | Method of continuously producing .gamma.-butyrolactams | Chemistry; Metallurgy | 7 | Expired |
| US3957888A | Process for the manufacture of butynediol | Chemistry; Metallurgy | 7 | Expired |
| US4062899A | Butynediol manufacture | Chemistry; Metallurgy | 6 | Expired |
| US3954669A | Process for making an ethynylation catalyst | Performing Operations; Transporting | 6 | Expired |
| US4207263A | Manufacture of secondary amines by alkylating ammonia with alcohols | Chemistry; Metallurgy | 6 | Expired |
| US4709105A | Preparation of C.sub.3 -C.sub.25 -alkanols | Chemistry; Metallurgy | 6 | Expired |
| US4196130A | Manufacture of cyclic ethers | Performing Operations; Transporting | 5 | Expired |
| US3991127A | Production of saturated aliphatic alcohols | Chemistry; Metallurgy | 5 | Expired |
| US4093668A | Manufacture of butynediol | Chemistry; Metallurgy | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.