US3523912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of multicomponent catalysts
Assignee: Chevron USA Inc
•
Filing: 1968-08-30
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Granted: 1970-08-11
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Expires: 1988-08-30
Abstract
No abstract record available.
Inventors
- 👤 Joseph Jaffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:54
CPC Classifications
C; C10; C10G; C10G49/00; C10G49/02; B; B01; B01J; B01J21/00; B01J21/20; B01J23/00; B01J23/70; B01J23/74; B01J23/755; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/883; B01J23/888; B01J23/90; B01J29/00; B01J29/04; B01J29/06; B01J29/061; B01J37/00; B01J37/02; B01J37/03; B01J37/20; C10G35/00; C10G35/04; C10G35/06; C10G45/00; C10G45/58; C10G45/60; H; H01; H01F; H01F27/00; H01F27/40; H01F27/402; H01H; H01H85/00; H01H85/02; H01H85/0241; C08; C08L; C08L75/00; C08L75/04; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |