Patent US1892364A successfully refreshed from Google Patents.
US2587464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber spinning composition comprising solutions of vinylidene chloride polymers in tris (nu, nu-dimethylamino) phosphene oxide
Assignee: Monsanto Chemicals Ltd
•
Filing: 1950-02-27
•
Granted: 1952-02-26
•
Expires: 1970-02-27
Abstract
No abstract record available.
Inventors
- 👤 George E Ham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:29
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/08; D01F6/10; C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5397
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A HOMOGENEOUS MISCIBLE MIXTURE OF A POLYMER OF AT LEAST 85 PERCENT VINYLIDENE CHLORIDE AND UP TO 15 PERCENT OF ANOTHER POLYMERIZABLE MONOMER, AND TRIS(DIMETHYLAMINO) PHOSPHINE OXIDE.
Claim 2
Dependent Claim
27 words
A HOMOGENEOUS MISCIBLE MIXTURE OF A POLYMER OF AT LEAST 85 PERCENT VINYLIDENE CHLORIDE AND UP TO 15 PERCENT OF ANOTHER POLYMERIZABLE MONOMER, AND TRIS(DIMETHYLAMINO) PHOSPHINE OXIDE.
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) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |