Patent US2568989A successfully refreshed from Google Patents.
US2568989A
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Stabilized vinyl chloride polymer compositions
Assignee: Monsanto Chemicals Ltd
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Filing: 1949-04-27
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Granted: 1951-09-25
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Expires: 1969-04-27
Abstract
No abstract record available.
Inventors
- 👤 Elmer E Cowell
- 👤 Joseph R Darby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:35
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1535; C08K5/49; C08K5/51; C08K5/52; C08K5/521; C08K5/523
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A COMPOSITION COMPRISING A VINYL CHLORIDE POLYMER, A MONO ALKYL DIARYL PHOSPHATE IN WHICH THE ALKYL GROUP CONTAINS 6-14 CARBON ATOMS AND THE ARYL GROUPS ARE FROM THE GROUP CONSISTING OF PHENYL AND CRESYL GROUPS AND, AS A LIGHT STABILIZER THEREFOR, A TETRA HYDRO FURFURYL ESTER OF AN UNSATURATED FATTY ACID CONTAINING 10-20 CARBON ATOMS.
Claim 2
Dependent Claim
55 words
A COMPOSITION COMPRISING A VINYL CHLORIDE POLYMER, A MONO ALKYL DIARYL PHOSPHATE IN WHICH THE ALKYL GROUP CONTAINS 6-14 CARBON ATOMS AND THE ARYL GROUPS ARE FROM THE GROUP CONSISTING OF PHENYL AND CRESYL GROUPS AND, AS A LIGHT STABILIZER THEREFOR, A TETRA HYDRO FURFURYL ESTER OF AN UNSATURATED FATTY ACID CONTAINING 10-20 CARBON ATOMS.
References Cited (Backward Citations)
US2457035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |