Inventor
Eckhard Hetzel
Inventor
Bobenheim-Roxheim, DE
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Dprimary
C07DHeterocyclic compounds31%
B01DSeparation15%
C07CAcyclic or carbocyclic compounds15%
B22FWorking metallic powder8%
C01BNon-metallic elements8%
D07BRopes or cables in general8%
H01FMagnets8%
Y02PClimate change mitigation technologies in the production or processing of goods8%
PatentTitleYear
4,795,571'Purification of frozen crystal layers'19894,378,240'Preparation of acicular ferromagnetic metal particles consisting essentially of iron'19834,328,339'Continuous preparation of isatoic anhydride'19824,289,589'Separating toluene diisocyanate and/or higher boiling solvents from distillation residues of the toluene diisocyanate manufacture using a fluidized bed'19814,237,318'Manufacture of aqueous methanolic solution of sodium formate'19804,122,285'Manufacture of butenediol diacetate'19784,079,068'Manufacture of tetrahydrofuran from the diacetate of 1,4-butanediol'19784,001,273'Continuous manufacture of phthalimide'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1989Patents assigned to BASF AG (8)· patent assignee history
1977–1980Based in Frankenthal, DE· patent location history
1981–1989Based in Bobenheim-Roxheim, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BASF AG | 8 | 1977–1989 |
Locations
| Location | Patents | Span |
|---|---|---|
| Bobenheim-Roxheim, DE | 4 | 1981–1989 |
| Frankenthal, DE | 4 | 1977–1980 |