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US3535402A
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Dehydrogenation over pt-re catalyst
Assignee: Chevron USA Inc
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Filing: 1968-08-19
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Granted: 1970-10-20
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Expires: 1988-08-19
Abstract
No abstract record available.
Inventors
- 👤 Harris E Kluksdahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:58
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/327; C07C5/333; C07C5/3335; C07C5/3337; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/02; C07C2523/04; C07C2523/16; C07C2523/32; C07C2523/36; C07C2523/38; C07C2523/40; C07C2523/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3296118A
Cited
US3236765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |