US2898319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric vinyl esters plasticized with dialiphatic esters of certain alkylidene dibenzoic acids
Assignee: Wyeth Holdings LLC
•
Filing: 1957-01-08
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Granted: 1959-08-04
•
Expires: 1977-01-08
Abstract
No abstract record available.
Inventors
- 👤 John C Petropoulos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:55
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A COMPOSITION OF MATTER COMPRISING A MEMBER SELECTED FROM THE GROUP CONSISTING OF A COPOLYMER OF VINYL CHLORIDE AND VINYL ACETATE, AND POLYVINYL CHLORIDE AND A DIALIPHATIC ESTER OF AN ACID HAVING THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
36 words
A COMPOSITION OF MATTER COMPRISING A MEMBER SELECTED FROM THE GROUP CONSISTING OF A COPOLYMER OF VINYL CHLORIDE AND VINYL ACETATE, AND POLYVINYL CHLORIDE AND A DIALIPHATIC ESTER OF AN ACID HAVING THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
US2157697A
Cited
US2794822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |