US3380889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boric acid removal process and apparatus
Assignee: Westinghouse Electric Corp
•
Filing: 1966-03-30
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Granted: 1968-04-30
•
Expires: 1986-03-30
Abstract
No abstract record available.
Inventors
- 👤 Robert A Loose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:59
CPC Classifications
G; G21; G21C; G21C7/00; G21C7/06; G21C7/22; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3001978A
Cited
US1726321A
Cited
US2124729A
Cited
US2711388A
Cited
US2989454A
Cited
US3036057A
Cited
US3228754A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |