US2877272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacturing phosphinoborines
Assignee: American Potash and Chemical Corp
•
Filing: 1956-05-18
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Granted: 1959-03-10
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Expires: 1976-05-18
Abstract
No abstract record available.
Inventors
- 👤 Anton B Burg
- 👤 Jr Peter J Slota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:20
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A PROCESS FOR THE MANUFACTURE OF A PHOSPHINOBORINE COMPRISING: CONTACTING AN ALKALI METAL BOROHYDRIDE WITH A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
20 words
A PROCESS FOR THE MANUFACTURE OF A PHOSPHINOBORINE COMPRISING: CONTACTING AN ALKALI METAL BOROHYDRIDE WITH A COMPOUND OF THE FORMULA
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) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |