US3218289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tetraalkyl pyromellitate plasticizers and plasticized polyvinyl compositions
Assignee: Rohm and Haas Co
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Filing: 1958-07-17
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Granted: 1965-11-16
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Expires: 1978-07-17
Abstract
No abstract record available.
Inventors
- 👤 Stanley P Rowland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:32
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/76; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A RESINOUS COMPOSITION COMPRISING A POLYMER SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS OF VINYL CHLORIDE AND COPOLYMERS OF VINYL CHLORIDE WITH AN ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH, SAID COPOLYMER CONTAINING AT LEAST ABOUT 80% BY WEIGHT OF VINYL CHLORIDE COMBINED THEREWITH AND SAID RESINOUS COMPOSITION HAVING INCORPORATED THEREIN ABOUT 10 TO ABOUT 200% BY WEIGHT OF A TETRAALKYLPYROMELLITATE, IN WHICH THE ALKYL GROUP CONTAINS FROM 6 TO 8 CARBON ATOMS.
Claim 2
Dependent Claim
71 words
A RESINOUS COMPOSITION COMPRISING A POLYMER SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS OF VINYL CHLORIDE AND COPOLYMERS OF VINYL CHLORIDE WITH AN ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH, SAID COPOLYMER CONTAINING AT LEAST ABOUT 80% BY WEIGHT OF VINYL CHLORIDE COMBINED THEREWITH AND SAID RESINOUS COMPOSITION HAVING INCORPORATED THEREIN ABOUT 10 TO ABOUT 200% BY WEIGHT OF A TETRAALKYLPYROMELLITATE, IN WHICH THE ALKYL GROUP CONTAINS FROM 6 TO 8 CARBON ATOMS.
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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |