Inventor
Richard E. Ernst
Inventor
Kennett Square, PA, US
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds40%
C07DHeterocyclic compounds25%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds15%
Y02PClimate change mitigation technologies in the production or processing of goods10%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry5%
C01BNon-metallic elements5%
PatentTitleYear
6,566,539'Catalyst regeneration by treatment with an oxidizing agent'20036,355,846'Narrowing of poly (tetramethylene ether) glycol'20026,225,477'Process for regeneration of carbon-supported, rhenium-containing catalysts'20015,596,074'Method for controlling color formation during polytetramethylene ether glycol production'19974,954,658'Process for reducing fluoride levels in poly(tetramethylene ether) glycol'19904,879,420'Preparation of mixtures of butanediols'19894,859,801'Synthesis of mixtures of butanediols'19894,590,312'Process for preparing 2-alkyl-1,4-butanediols'19864,590,285'Process for preparing a mixture of tetrahydrofuran and 3-alkyl tetrahydrofuran and copolymers thereof'19864,499,291'Process for simultaneous hydrogenation of 2-butyne-1,4-diol and furan'19854,413,136'Purification of tetrahydrofuran'19834,383,895'Purification of 1,4-butanediol'19833,998,936'Process for regenerating hydrogenation catalyst activity in hydrogen peroxide synthesis'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–2003Patents assigned to DU PONT (13)· patent assignee history
1976Based in Cochranville, PA, US· patent location history
1983–2003Based in Kennett Square, PA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DU PONT | 13 | 1976–2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kennett Square, Pennsylvania, US | 12 | 1983–2003 |
| Cochranville, Pennsylvania, US | 1 | 1976 |