US2787527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for recovering boron values
Assignee: Individual
•
Filing: 1945-09-28
•
Granted: 1957-04-02
•
Expires: 1965-09-28
Abstract
No abstract record available.
Inventors
- 👤 Kilpatrick Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:50
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
THE PROCESS FOR RECOVERING BORON VALUES FROM THE LIQUID BY-PRODUCT OBTAINED ON THERMALLY DECOMPOSING A METAL HALIDE-BORON TRIFLUORIDE COMPLEX, WHICH COMPRISES REACTING THE LIQUID BY-PRODUCT WITH HYDROFLUORIC ACID, REACTING THE PRODUCT WITH AN ALKALI TO FORM AN ALKALI METAL FLUOBORATE, SEPARATING THE ALKALI METAL FLUOBORATE FROM THE REACTION MIXTURE, AND DECOMPOSING THE ALKALI METAL FLUOBORATE TO LIBERATE BORON TRIFLUORIDE.
Claim 2
Dependent Claim
59 words
THE PROCESS FOR RECOVERING BORON VALUES FROM THE LIQUID BY-PRODUCT OBTAINED ON THERMALLY DECOMPOSING A METAL HALIDE-BORON TRIFLUORIDE COMPLEX, WHICH COMPRISES REACTING THE LIQUID BY-PRODUCT WITH HYDROFLUORIC ACID, REACTING THE PRODUCT WITH AN ALKALI TO FORM AN ALKALI METAL FLUOBORATE, SEPARATING THE ALKALI METAL FLUOBORATE FROM THE REACTION MIXTURE, AND DECOMPOSING THE ALKALI METAL FLUOBORATE TO LIBERATE BORON TRIFLUORIDE.
References Cited (Backward Citations)
US2374958A
Cited
US2374957A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-01 | 1960-10-01 | 1961-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-01 | 1964-10-01 | 1965-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-01 | 1968-10-01 | 1969-04-02 | $7700.00 | Window Closed / Lapsed |