Helmut Knorre
22Patents
8h-index
20Co-inventors
71Inventor score
Filing activity: Oct 16, 1974 → Jun 18, 1992
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4416786A | Process for the treatment of continuous waste water streams having changing contents of different oxidizable materials with hydrogen peroxide | Emerging Cross-Sectional Technologies | 37 | Expired |
| US3970554A | Process for detoxification of cyanides and nitriles with peroxygen compounds | Chemistry; Metallurgy | 14 | Expired |
| US4280914A | Process for automatically controlling the detoxification of waste waters containing nitrite ions | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4252637A | Process for the reprocessing of used lubricating oils (II) | Chemistry; Metallurgy | 11 | Expired |
| US4366049A | Process for recycling of used lubricating oils | Chemistry; Metallurgy | 9 | Expired |
| US4915849A | Process for the treatment of effluents containing cyanide and other oxidizable substances | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4172785A | Process for the separation of Cu.sup.++ -ions from sewage, waste water and aqueous solutions | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4150244A | Process for the production of crystalline alcohol free alkali metal alcoholates in an inert solvent | Chemistry; Metallurgy | 8 | Expired |
| US4107274A | Process for preventing caking and obtaining flowability of alkali chlorides and salt mixtures thereof | Chemistry; Metallurgy | 8 | Expired |
| US3956121A | Process for the precipitation of heavy metal ion-polycarboxylate complexes | Chemistry; Metallurgy | 7 | Expired |
| US4126446A | Packages for the storage of air and moisture sensitive metallurgical additives and the use of such packages | Chemistry; Metallurgy | 7 | Expired |
| US4021264A | Method of dissolving a silver coating in a photo tank | Physics | 6 | Expired |
| US4094693A | D,L Tartaric acid as retardant for gypsum plaster | Chemistry; Metallurgy | 6 | Expired |
| US5250272A | Process for leaching precious metals with hydrogen-peroxide and a cyanide leaching solution | Chemistry; Metallurgy | 6 | Expired |
| US4172784A | Process for the separation of cadmium (Cd.sup.++)-ions from sewage, waste water and aqueous solutions | Emerging Cross-Sectional Technologies | 5 | Expired |
| US3980593A | Anticaking agent for inorganic salts | Performing Operations; Transporting | 4 | Expired |
| US4731232A | Process for the purification of industrial gases or waste gases | Performing Operations; Transporting | 4 | Expired |
| US4051228A | Preventing caking and obtaining flowability of alkali chlorides and salt mixtures thereof | Performing Operations; Transporting | 3 | Expired |
| US5275791A | Process for the leaching of gold and silver with cyanidic leaching solution and controlled addition of hydrogen peroxide | Chemistry; Metallurgy | 3 | Expired |
| US4255252A | Procedure for the reprocessing of used lubricating oils | Chemistry; Metallurgy | 3 | Expired |
| US4124406A | Setting retarder | Chemistry; Metallurgy | 2 | Expired |
| US5178775A | Cost effective process for detoxification of cyanide-containing effluents | Emerging Cross-Sectional Technologies | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.