US3152104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel phosphine and process of preparation
Assignee: Wyeth Holdings LLC
•
Filing: 1961-03-09
•
Granted: 1964-10-06
•
Expires: 1981-03-09
Abstract
No abstract record available.
Inventors
- 👤 Rabinowitz Robert
- 👤 Marcus Ruth Weintraub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:10
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/50; C07F9/5022; C08; C08F; C08F30/00; C08F30/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
2 words
MONOMERIC P-STYRYLDIPHENYLPHOSPHINE.
Claim 2
Dependent Claim
2 words
MONOMERIC P-STYRYLDIPHENYLPHOSPHINE.
Claim 3
Dependent Claim
6 words
POLYMERIC P-STYRYLDIPHENYLPHOSPHINE, HAVING GOOD FLAME-RESISTANT PROPERTIES.
Claim 4
Dependent Claim
6 words
POLYMERIC P-STYRYLDIPHENYLPHOSPHINE, HAVING GOOD FLAME-RESISTANT PROPERTIES.
References Cited (Backward Citations)
US3010998A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-06 | 1968-04-06 | 1968-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-06 | 1972-04-06 | 1972-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-06 | 1976-04-06 | 1976-10-06 | $7700.00 | Window Closed / Lapsed |