Patent US2921096A successfully refreshed from Google Patents.
US2921096A
Expired / Lapsed
US
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Phosphinoborine compounds and their preparation
Assignee: American Potash and Chemical Corp
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Filing: 1957-06-17
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Granted: 1960-01-12
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Expires: 1977-06-17
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 16:37
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6596
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A PHOSPHINOBORINE POLYMER HAVING A RING CONFIGURATION AND THE GENERAL FORMULA (RR''PBH2)N, WHEREIN R AND R'' ARE SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF ALKENYL, AT LEAST ONE OF SAID SUBSTITUENTS HAVING LOWER ALKENYL, AT LEAST ONE OF SAID SUBSTITUENTS HAVING AT LEAST TWO CARBON ATOMS AND WHEREIN N IS AN INTEGER FROM THREE TO FOUR INDICATIVE OF THE DEGREE OF POLYMERIZATION.
Claim 2
Dependent Claim
62 words
A PHOSPHINOBORINE POLYMER HAVING A RING CONFIGURATION AND THE GENERAL FORMULA (RR''PBH2)N, WHEREIN R AND R'' ARE SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF ALKENYL, AT LEAST ONE OF SAID SUBSTITUENTS HAVING LOWER ALKENYL, AT LEAST ONE OF SAID SUBSTITUENTS HAVING AT LEAST TWO CARBON ATOMS AND WHEREIN N IS AN INTEGER FROM THREE TO FOUR INDICATIVE OF THE DEGREE OF POLYMERIZATION.
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) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |