US3539468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alumina hydrate compositions
Assignee: Catalysts and Chemicals Inc
•
Filing: 1968-10-25
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Granted: 1970-11-10
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Expires: 1988-10-25
Abstract
No abstract record available.
Inventors
- 👤 James H Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:33
CPC Classifications
C; C10; C10G; C10G49/00; C10G49/02; C10G49/04; B; B01; B01J; B01J21/00; B01J21/02; B01J21/04; C01; C01F; C01F7/00; C01F7/02; C01F7/04; C01F7/14; C01F7/141; C01F7/142; B01J23/00; B01J23/38; B01J23/40; B01J23/44; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J35/00; B01J35/60; B01J35/61; B01J35/615; B01J35/63; B01J35/635; B01J35/64; B01J35/647; C01P; C01P2004/00; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/12; C01P2006/14; C01P2006/16; C10G2400/00; C10G2400/02; Y; Y02; Y02P; Y02P20/00; Y02P20/141
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |