US3384458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water hydrolysis reactor for making alumina
Assignee: Vista Chemical Co
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Filing: 1965-06-16
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Granted: 1968-05-21
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Expires: 1985-06-16
Abstract
No abstract record available.
Inventors
- 👤 Mccarthy John Walton
- 👤 Sydney V Stern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:18
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/02; C01F7/34; C01F7/36; B; B01; B01D; B01D11/00; B01D11/02; B01D11/0215; B01D11/0223; B01D11/0242; B01D11/0246; B01J; B01J19/00; B01J19/18; B01J2219/00; B01J2219/00761; B01J2219/00763; B01J2219/00765; B01J2219/0077
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) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |