Patent US2916518A successfully refreshed from Google Patents.
US2916518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphine borine compounds and their preparation
Assignee: University of Southern California
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Filing: 1957-06-17
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Granted: 1959-12-08
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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
2026-10-24 22:06
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/50; C07F9/5045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A PHOSPHINE BORING HAVING THE FORMULA RR''HP-HP:BH3 WHERE R AND R ARE SELECTED FROM THE GROUP CONSISTING OF ALKYL RADICALS HAVING LESS THAN 13 CARBON ATOMS AND LOWER ALKENYL RADICALS AND WHERE AT LEAST ONE OF R AND R'' INCLUDES AT LEAST TWO CARBON ATOMS.
Claim 2
Dependent Claim
45 words
A PHOSPHINE BORING HAVING THE FORMULA RR''HP-HP:BH3 WHERE R AND R ARE SELECTED FROM THE GROUP CONSISTING OF ALKYL RADICALS HAVING LESS THAN 13 CARBON ATOMS AND LOWER ALKENYL RADICALS AND WHERE AT LEAST ONE OF R AND R'' INCLUDES AT LEAST TWO CARBON ATOMS.
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) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |