Herbert Klenk
30Patents
7h-index
44Co-inventors
69Inventor score
Filing activity: Jun 2, 1977 → Mar 18, 1998
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5387720A | Process for the production of acrolein | Chemistry; Metallurgy | 63 | Expired |
| US5426249A | Process for the simultaneous production of 1,2- and 1,3-propanediol | Emerging Cross-Sectional Technologies | 31 | Expired |
| US4914208A | Optically active salts of a substituted thiazolidine-4-carboxylate and 3-chloro-2-hydroxypropyltrimethyl ammonium, their preparation and use | Chemistry; Metallurgy | 20 | Expired |
| US4824987A | Method of preparing m-trifluoromethylphenyl acetonitrile | Chemistry; Metallurgy | 17 | Expired |
| US5455264A | RS-thioctic acid with novel morphology | Chemistry; Metallurgy | 16 | Expired |
| US4175188A | Process for the production of 1,2,4-triazin-5-one derivatives | Human Necessities | 12 | Expired |
| US4341709A | Preparation of .epsilon.-caprolactone | Chemistry; Metallurgy | 7 | Expired |
| US4360682A | Stabilizing caprolactones with dihydroxybenzenes | Chemistry; Metallurgy | 6 | Expired |
| US4117008A | Process for the production of benzoyl cyanide (II) | Chemistry; Metallurgy | 4 | Expired |
| US4108875A | Process for the production of acyl cyanides (B) | Chemistry; Metallurgy | 4 | Expired |
| US4313879A | Process for the manufacture of very pure .epsilon.-caprolactone | Chemistry; Metallurgy | 4 | Expired |
| US4108877A | Process for the production of acyl cyanides (A) | Chemistry; Metallurgy | 4 | Expired |
| US4113773A | Process for the production of benzoyl cyanide (I) | Chemistry; Metallurgy | 4 | Expired |
| US4228082A | N-Substituted .alpha.-ketocarboxylic acid amides | Chemistry; Metallurgy | 3 | Expired |
| US4490307A | Process for the production of .beta.-mercaptopropionic acid derivatives | Chemistry; Metallurgy | 2 | Expired |
| US4161491A | Process for the production of alpha-ketocarboxylic acid amides and cycloaliphatic products | Chemistry; Metallurgy | 2 | Expired |
| US4144269A | Process for the production of benzoyl cyanide (IV) | Chemistry; Metallurgy | 2 | Expired |
| US5166426A | Process for producing L-carnitine from D,L-carnitine nitrile salts | Chemistry; Metallurgy | 2 | Expired |
| US4209461A | Process for the production of benzoyl cyanide (I) | Chemistry; Metallurgy | 2 | Expired |
| US4224226A | Process for the production of N-substituted .alpha.-ketocarboxylic acid amides | Chemistry; Metallurgy | 2 | Expired |
| US4339591A | Process for the production of caboxylic acid cyanides | Chemistry; Metallurgy | 1 | Expired |
| US5049283A | Method for the recovery of aqueous solutions of free, neutral .alpha.-amino acids from aqueous solutions of their alkali-metal salts | Chemistry; Metallurgy | 1 | Expired |
| US4326056A | Process for the production of 4-amino-6-tert. butyl-3-mercapto-1,2,4-triazin-5-one | Chemistry; Metallurgy | 1 | Expired |
| US4402733A | Herbicidally active 1,2,4-triazin-5-one derivatives | Human Necessities | 1 | Expired |
| US4122116A | Substituted cyclopropyl glyoxylnitriles | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.