Karlheinz Drauz
128Patents
12h-index
167Co-inventors
89Inventor score
Filing activity: Dec 17, 1979 → Jan 21, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6191284A | Ligands and complexes for enantioselective hydrogenation | Chemistry; Metallurgy | 24 | Expired |
| US5670332A | Enzymatic reactions and apparatus for carrying them out | Chemistry; Metallurgy | 23 | Expired |
| US6251625A | Process for preparing peptides and N-carbamoyl-protected peptides | Emerging Cross-Sectional Technologies | 22 | Expired |
| US6037474A | Process for the preparation of cyclic 4-oxoamidines | Chemistry; Metallurgy | 21 | Expired |
| US5591613A | Method for the preparation of D-arginine and L-ornithine | Chemistry; Metallurgy | 21 | Expired |
| US6284925A | Use of ferrocenyl ligands for catalytic, enantioselective hydrogenation | Chemistry; Metallurgy | 21 | Expired |
| US5405761A | Method for the preparation of salts of L-ornithine | Chemistry; Metallurgy | 20 | Expired |
| US6524837B1 | Hydantoinase variants with improved properties and their use for the production of amino acids | Chemistry; Metallurgy | 18 | Expired |
| US4564514A | Process for the production of water-free organic hydrogen peroxide solution | Chemistry; Metallurgy | 18 | Expired |
| US5534541A | Compounds for combating plant disease | Chemistry; Metallurgy | 14 | Expired |
| US5516660A | Microorganisms, their use and method of producing L-.alpha.-amino acids | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5605877A | Bicyclic imides as herbicides | Chemistry; Metallurgy | 14 | Expired |
| US6492544B2 | Process for synthesis of enantiomerically enriched &bgr;-amino acids | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5534538A | N-acyl dipeptides and their compositions | Human Necessities | 12 | Expired |
| US4946968A | Method of preparing alkali metal salts of 2-pyrrolidone-5-carboxylic acid | Chemistry; Metallurgy | 11 | Expired |
| US5008192A | Enzymatic process for the preparation of optically active cyanohydrins | Chemistry; Metallurgy | 11 | Expired |
| US5543397A | New N-acyl dipeptides and their use | Human Necessities | 11 | Expired |
| US5714355A | Microorganism, use thereof and process for the production of L-.alpha.-amino acids | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6225482A | Process for the enantioselective epoxidation of C.dbd.C double bonds | Chemistry; Metallurgy | 10 | Expired |
| US6060432A | Herbicidal sulfonamides | Chemistry; Metallurgy | 9 | Expired |
| US4376864A | Cyclic acetals of glutamic acid-.gamma.-semialdehyde, process for their production and use | Chemistry; Metallurgy | 9 | Expired |
| US5981767A | Method of producing dry thioctic acid | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6162442A | Use of aqueous L-Tryptophan and/or L-Threonine salt solutions | Human Necessities | 8 | Expired |
| US4728743A | Process for the production of 3-oxonitriles | Chemistry; Metallurgy | 8 | Expired |
| US4482760A | Process for the production of 1,2-diols | Chemistry; Metallurgy | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.