Patent US2557091A successfully refreshed from Google Patents.
US2557091A
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Plasticized polyvinyl chloride compositions
Assignee: Monsanto Chemicals Ltd
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Filing: 1948-01-02
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Granted: 1951-06-19
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Expires: 1968-01-02
Abstract
No abstract record available.
Inventors
- 👤 Harry R Gamrath
- 👤 William E Weesner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:25
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/521; C08K5/523
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A PLASTICIZED POLYVINYL CHLORIDE COMPOSITION COMPRISING A POLYVINYL CHLORIDE RESIN SELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE AND COPOLYMERS OF VINYL CHLORIDE AND UNSATURATED MATERIALS COPOLYMERIZABLE THEREWITH, AND 20 TO 60% BY WEIGHT OF MONOALKYL DIARYL PHOSPHATE ESTERS HAVING THE FORMULA:
Claim 2
Dependent Claim
42 words
A PLASTICIZED POLYVINYL CHLORIDE COMPOSITION COMPRISING A POLYVINYL CHLORIDE RESIN SELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE AND COPOLYMERS OF VINYL CHLORIDE AND UNSATURATED MATERIALS COPOLYMERIZABLE THEREWITH, AND 20 TO 60% BY WEIGHT OF MONOALKYL DIARYL PHOSPHATE ESTERS HAVING THE FORMULA:
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) | 1954-06-18 | 1954-12-18 | 1955-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-18 | 1958-12-18 | 1959-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-18 | 1962-12-18 | 1963-06-19 | $7700.00 | Window Closed / Lapsed |