US2533696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diborane purification process
Assignee: Individual
•
Filing: 1949-09-09
•
Granted: 1950-12-12
•
Expires: 1969-09-09
Abstract
No abstract record available.
Inventors
- 👤 George W Schaeffer
- 👤 Glen D Barbaras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:11
CPC Classifications
C; C01; C01B; C01B6/00; C01B6/06; C01B6/10; C01B6/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
THE PROCESS OF RECOVERING DIBORANE FROM A MIXTURE OF DIBORANCE AND ETHANE, WHICH COMPRISES CONTACTING SAID MIXTURE WITH A PYRIDINE TO PRODUCE A COMPLEX COMPOUND OF PYRIDINE AND DIBORANE, REMOVING THE ETHANE FROM SAID COMPLEX COUMPOUND BY FRACTIONAL DISTILLATION, AND THEN REACTING SAID COMPLEX WITH A BORON HALIDE WHEREBY THE DIBORANE IS FREED.
Claim 2
Dependent Claim
53 words
THE PROCESS OF RECOVERING DIBORANE FROM A MIXTURE OF DIBORANCE AND ETHANE, WHICH COMPRISES CONTACTING SAID MIXTURE WITH A PYRIDINE TO PRODUCE A COMPLEX COMPOUND OF PYRIDINE AND DIBORANE, REMOVING THE ETHANE FROM SAID COMPLEX COUMPOUND BY FRACTIONAL DISTILLATION, AND THEN REACTING SAID COMPLEX WITH A BORON HALIDE WHEREBY THE DIBORANE IS FREED.
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) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |