Inventor
Hartmut Pietsch
Inventor
Hofheim, DE
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Dprimary
C07DHeterocyclic compounds25%
C22BProduction and refining of metals21%
A23LFoods, foodstuffs or non-alcoholic beverages, not otherwise provided for8%
C01GCompounds containing metals not covered by subclasses c01d or c01f8%
C07CAcyclic or carbocyclic compounds8%
Y02PClimate change mitigation technologies in the production or processing of goods8%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds4%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy4%
Y02WClimate change mitigation technologies related to wastewater treatment or waste management4%
PatentTitleYear
4,775,107'Method of processing small batteries'19884,472,359'Method of pressure leaching'19844,438,076'Method of extracting gold and silver from an ore'19844,436,704'Method of recovering uranium oxide from alkaline sodium uranyl carbonate solutions'19844,361,541'Method for extraction of uranium from ores'19824,322,271'Process for the preparation of N-vinyl-N-alkyl-carboxylic acid amides'19824,052,453'Process for preparing acetoacetamide-N-sulfofluoride'19774,009,161'6-Methyl-2H-1,3-oxazin-2,4(3H)dione-3-sulfohalides'19773,993,689'.beta.-Acyloxy-crotonic acid amide-N-sulfohalides and a process for their preparation'19763,969,347'Process for the manufacture of the potassium salt of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one-2,2-dioxide'19763,969,348'Process for the manufacture of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one-2,2-dioxide'19763,968,106'Process for the manufacture of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one-2,2-dioxide and its use as sweetener'19763,968,107'Process for the manufacture of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one-2,2-dioxide'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1982Patents assigned to HOECHST AG (8)· patent assignee history
1976–1982Based in Hofheim, DE· patent location history
1982–1984Patents assigned to VAW VER ALUMINIUM WERKE AG (3)· patent assignee history
1982–1988Based in Bad Homburg, DE· patent location history
1984–1988Patents assigned to METALLGESELLSCHAFT AG (4)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HOECHST AG | 8 | 1976–1982 |
| METALLGESELLSCHAFT AG | 4 | 1984–1988 |
| VAW VER ALUMINIUM WERKE AG | 3 | 1982–1984 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hofheim, DE | 8 | 1976–1982 |
| Bad Homburg, DE | 5 | 1982–1988 |