Patent US3025326A successfully refreshed from Google Patents.
US3025326A
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Phosphinoborine compounds and their preparation
Assignee: American Potash & Chemcial Cor
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Filing: 1959-04-16
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Granted: 1962-03-13
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Expires: 1979-04-16
Abstract
No abstract record available.
Inventors
- 👤 Anton B Burg
- 👤 Ross I Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:00
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/307
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
29 words
A PHOSPHINOBORINE POLYMER OF RING CONFIGURATION COMPOSED OF BETWEEN 3 AND 4 PHOSPHINOBORINE UNITS, EACH OF SAID UNITS HAVING A FORMULA SELECTED FROM THE GROUP CONSISTING OF (R2PBY2) AND
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) | 1965-03-12 | 1965-09-11 | 1966-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-12 | 1969-09-11 | 1970-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-12 | 1973-09-11 | 1974-03-13 | $7700.00 | Window Closed / Lapsed |