US2402959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of boron from boron polluted substances
Assignee: Infilco Inc
•
Filing: 1943-05-13
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Granted: 1946-07-02
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Expires: 1963-05-13
Abstract
No abstract record available.
Inventors
- 👤 Hilding B Gustafson
- 👤 Jr Edward Kominek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:14
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/08; C01B35/10; C01B35/06; C01B35/12; C01F; C01F5/00; C01F5/26; C01F5/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-07-01 | 1949-12-31 | 1950-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-07-01 | 1953-12-31 | 1954-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-07-01 | 1957-12-31 | 1958-07-02 | $7700.00 | Window Closed / Lapsed |