Hartmut Pietsch
13Patents
5h-index
20Co-inventors
62Inventor score
Filing activity: Jul 16, 1975 → Apr 21, 1987
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4322271A | Process for the preparation of N-vinyl-N-alkyl-carboxylic acid amides | Chemistry; Metallurgy | 13 | Expired |
| US4438076A | Method of extracting gold and silver from an ore | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4775107A | Method of processing small batteries | Emerging Cross-Sectional Technologies | 8 | Expired |
| US3968107A | Process for the manufacture of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one-2,2-dioxide | Chemistry; Metallurgy | 7 | Expired |
| US3968106A | Process for the manufacture of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one-2,2-dioxide and its use as sweetener | Human Necessities | 6 | Expired |
| US3969347A | Process for the manufacture of the potassium salt of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one-2,2-dioxide | Human Necessities | 5 | Expired |
| US4436704A | Method of recovering uranium oxide from alkaline sodium uranyl carbonate solutions | Chemistry; Metallurgy | 5 | Expired |
| US4361541A | Method for extraction of uranium from ores | Chemistry; Metallurgy | 5 | Expired |
| US3969348A | Process for the manufacture of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one-2,2-dioxide | Chemistry; Metallurgy | 3 | Expired |
| US4472359A | Method of pressure leaching | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4052453A | Process for preparing acetoacetamide-N-sulfofluoride | Chemistry; Metallurgy | 2 | Expired |
| US4009161A | 6-Methyl-2H-1,3-oxazin-2,4(3H)dione-3-sulfohalides | Chemistry; Metallurgy | 0 | Expired |
| US3993689A | .beta.-Acyloxy-crotonic acid amide-N-sulfohalides and a process for their preparation | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.