US2948689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphinoborine compounds and their preparation
Assignee: American Potash and Chemical Corp
•
Filing: 1957-11-08
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Granted: 1960-08-09
•
Expires: 1977-11-08
Abstract
No abstract record available.
Inventors
- 👤 Anton B Burg
- 👤 Ross I Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:16
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A PHOSPHINOBORINE POLYMER COMPOSED OF PHOSPHINOBORINE MONOMERIC UNITS, SAID UNITS HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
14 words
A PHOSPHINOBORINE POLYMER COMPOSED OF PHOSPHINOBORINE MONOMERIC UNITS, SAID UNITS HAVING THE GENERAL 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) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |