US3697448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective isomerization employing metal arsenide catalyst
Assignee: Phillips Petroleum Co
•
Filing: 1970-06-08
•
Granted: 1972-10-10
•
Expires: 1990-06-08
Abstract
Abstract A METHOD AND CATALYSTS FOR SELECTIVE HYDROGENATION AND ISOMERIZATION WHICH INVOLVES CONTACTING A FEEDSTREAM WITH HYDROGEN AND WITH VARIOUS SUPPORTED CATALYSTS OF MATALLIC ARSENIDES AND ANTIMONIDES, WITH CARBON MONOXIDE BEING OPTIONALLY INTRODUCED INTO THE REACTION AS A MODIFIER.
Inventors
- 👤 Marvin M Johnson
- 👤 Donald C Tabler
- 👤 Gerhard P Nowack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:29
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/23; C07C5/25; C07C5/2506; C07C5/2525; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/843; C07C5/2556; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/755; C07C2523/76; C07C2523/84; C07C2523/843; C07C2601/00; C07C2601/18; C07C2601/20; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |