US2889370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of alkanol-boron fluoride complex
Assignee: Callery Chemical Co
•
Filing: 1955-05-18
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Granted: 1959-06-02
•
Expires: 1975-05-18
Abstract
No abstract record available.
Inventors
- 👤 William H Schechter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:07
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
THAT METHOD OF PROVIDING AVAILABLE BF3 COMPRISING REACTING A LOWER TRIALKYL BORATE AND HYDROGEN FLUORIDE IN AN INERT ATMOSPHERE AND THEREBY PRODUCING A DI-LOWER ALKANAL BORON TRLIFLUORIDE COMPLEX, AND RECOVERING SAID DI-LOWER ALKANOL COMPLEX.
Claim 2
Dependent Claim
34 words
THAT METHOD OF PROVIDING AVAILABLE BF3 COMPRISING REACTING A LOWER TRIALKYL BORATE AND HYDROGEN FLUORIDE IN AN INERT ATMOSPHERE AND THEREBY PRODUCING A DI-LOWER ALKANAL BORON TRLIFLUORIDE COMPLEX, AND RECOVERING SAID DI-LOWER ALKANOL COMPLEX.
References Cited (Backward Citations)
US2135454A
Cited
US2446171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |