Inventor
Calvin T. Chew
Inventor
Warrenville, IL, US
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds67%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry17%
Y02PClimate change mitigation technologies in the production or processing of goods17%
PatentTitleYear
6,518,472'Stabilized dual bed xylene isomerization catalyst system'20035,166,424'Liquid phase oxidation of alcohols to prepare carboxylic acids'19924,906,772'Process for production of polycarboxylic aromatic acids'19904,855,491'Method for selectively removing process stream impurities utilizing reverse osmosis'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–1992Patents assigned to AMOCO CORP (3)· patent assignee history
1989–2003Based in Warrenville, IL, US· patent location history
2003Patents assigned to BP CORP NORTH AMERICA INC (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| AMOCO CORP | 3 | 1989–1992 |
| BP CORP NORTH AMERICA INC | 1 | 2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| Warrenville, Illinois, US | 4 | 1989–2003 |