Inventor
David M. Gardner
Inventor
Collegeville, PA, US
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds39%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry22%
C01BNon-metallic elements11%
C02FTreatment of water, waste water, sewage, or sludge11%
C07DHeterocyclic compounds6%
C25BElectrolytic or electrophoretic processes for the production of compounds or non-metals6%
Y02PClimate change mitigation technologies in the production or processing of goods6%
PatentTitleYear
5,068,427'Process for the preparation of alkane- and arenesulfonamides'19915,035,777'Preparation of alkanesulfonyl halides and alkanesulfonic acids'19914,876,048'Purification of alkanesulfonyl chlorides'19894,827,031'Process for preparing amines from olefins with ammonium halide catalysts'1989RE032392'Catalyst pellets with resin binder for decomposition of hypochlorite'19874,491,570'Removal of arsenic from hydrogen fluoride'19854,483,757'Photochemical process for preparing amines'19844,459,191'Light-catalyzed process for preparing amines'19844,454,321'Preparation of amines from olefins using certain transition metal catalysts'19844,400,304'Catalyst pellets with resin binder for decomposition of hypochlorite'19834,379,024'Process for the manufacture of alkylaminoalkanol'1983Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1983–1989Patents assigned to PENNWALT CORP (8)· patent assignee history
1983–1987Based in Collegeville, PA, US· patent location history
1983–1989Based in Worcester, PA, US· patent location history
1985–1991Based in Worcester Township, Montgomery County, PA, US· patent location history
1991Patents assigned to ATOCHEM NORTH AMERICA (2)· patent assignee history
1991Based in King of Prussia, PA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PENNWALT CORP | 8 | 1983–1989 |
| ATOCHEM NORTH AMERICA | 2 | 1991 |
Locations
| Location | Patents | Span |
|---|---|---|
| Collegeville, Pennsylvania, US | 4 | 1983–1987 |
| Worcester Township, Montgomery County, Pennsylvania, US | 3 | 1985–1991 |
| Worcester, Pennsylvania, US | 3 | 1983–1989 |
| King of Prussia, Pennsylvania, US | 1 | 1991 |