US3314929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternary phosphorus compounds and method of preparing same
Assignee: Wyeth Holdings LLC
•
Filing: 1964-06-26
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Granted: 1967-04-18
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Expires: 1984-06-26
Abstract
No abstract record available.
Inventors
- 👤 Rauhut Michael Mckay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:03
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/54; C07F9/5449
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A HOMOPOLYMERIC DI-SUBSTITUTED-ETHYLENE-PHOSPHONIUM COMPOUND DERIVED BY POLYMERIZATION AND COMPOSED OF THE RECURRING STRUCTURAL UNIT
Claim 2
Dependent Claim
14 words
A HOMOPOLYMERIC DI-SUBSTITUTED-ETHYLENE-PHOSPHONIUM COMPOUND DERIVED BY POLYMERIZATION AND COMPOSED OF THE RECURRING STRUCTURAL UNIT
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |