US3507780A
Expired / Lapsed
US
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Startup procedure for a low content platinum rhenium-iridium catalyst reforming process
Assignee: Chevron USA Inc
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Filing: 1969-04-07
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Granted: 1970-04-21
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Expires: 1989-04-07
Abstract
No abstract record available.
Inventors
- 👤 Burwell Spurlock
- 👤 Robert L Jacobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:43
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/656; B01J23/6567; C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C10G35/09; C10G35/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2848377A
Cited
US2902434A
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US2880161A
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US2939847A
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US3000809A
Cited
US3296118A
Cited
US3309306A
Cited
US3415737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-20 | 1973-10-20 | 1974-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-20 | 1977-10-20 | 1978-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-20 | 1981-10-20 | 1982-04-21 | $7700.00 | Window Closed / Lapsed |