US2889295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl halide polymers stabilized with phosphites and benzoic acid esters
Assignee: Monsanto Chemicals Ltd
•
Filing: 1956-07-16
•
Granted: 1959-06-02
•
Expires: 1976-07-16
Abstract
No abstract record available.
Inventors
- 👤 Joseph R Darby
- 👤 Paul R Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:59
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/134; C08K5/1345; C08K5/49; C08K5/51; C08K5/52; C08K5/524
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A LIGHT STABILIZED VINYL HALIDE POLYMER COMPOSITION COMPRISING A VINYL HALIDE POLYMER IN WHICH AT LEAST 50% OF THE MONOMER UNITS ARE VINYL HALIDE UNITS, ANY BALANCE BEING UNITS OF AN ETHYLENICALLY UNSATURATED MONOMER, 0.1 TO 5 PARTS PER 100 PARTS BY WEIGHT OF POLYMER OF A TRI(HYDROCARBON) PHOSPHITE OF THE STRUCTURE
Claim 2
Dependent Claim
52 words
A LIGHT STABILIZED VINYL HALIDE POLYMER COMPOSITION COMPRISING A VINYL HALIDE POLYMER IN WHICH AT LEAST 50% OF THE MONOMER UNITS ARE VINYL HALIDE UNITS, ANY BALANCE BEING UNITS OF AN ETHYLENICALLY UNSATURATED MONOMER, 0.1 TO 5 PARTS PER 100 PARTS BY WEIGHT OF POLYMER OF A TRI(HYDROCARBON) PHOSPHITE OF THE STRUCTURE
References Cited (Backward Citations)
US2464250A
Cited
US2469696A
Cited
US2477609A
Cited
US2572571A
Cited
US2564646A
Cited
US2671064A
Cited
US2752319A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |