Patent US2964550A successfully refreshed from Google Patents.
US2964550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organosilylalkyl derivatives of phosphorus, arsenic, antimony, and bismuth
Assignee: Primerica Inc
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Filing: 1957-09-24
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Granted: 1960-12-13
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Expires: 1977-09-24
Abstract
No abstract record available.
Inventors
- 👤 Seyferth Dietmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:00
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/90; C07F9/94
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
US2673210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |