US2856378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerizable unsaturated polyester resin compositions containing small amounts of certain saturated alkyd resins and process of preparing the same
Assignee: Wyeth Holdings LLC
•
Filing: 1956-01-27
•
Granted: 1958-10-14
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Expires: 1976-01-27
Abstract
No abstract record available.
Inventors
- 👤 Lennart A Lundberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:30
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A COMPOSITION OF MATTER WHICH COMPRISES BETWEEN ABOUT 1 AND ABOUT 15 PARTS BY WEIGHT OF A POLYESTER OF PROPYLENE GLYCOL AND ADIPIC ACID IN ADMIXTURE WITH 100 PARTS OF A COPOLYMERIZAVLE IXTURE OF AN UNSATURATED LINEAR POLYESTER RESIN PREPARED BY REACTING A POLYHYDRIC ALCOHOL WITH AN ALPHA, BETA ETHYLENICALLY UNSATURATED DICARBOXYLIC ACID AND A MONOERIC COMPOUND CONTAINING A CH2=C< GROUP.
Claim 2
Dependent Claim
61 words
A COMPOSITION OF MATTER WHICH COMPRISES BETWEEN ABOUT 1 AND ABOUT 15 PARTS BY WEIGHT OF A POLYESTER OF PROPYLENE GLYCOL AND ADIPIC ACID IN ADMIXTURE WITH 100 PARTS OF A COPOLYMERIZAVLE IXTURE OF AN UNSATURATED LINEAR POLYESTER RESIN PREPARED BY REACTING A POLYHYDRIC ALCOHOL WITH AN ALPHA, BETA ETHYLENICALLY UNSATURATED DICARBOXYLIC ACID AND A MONOERIC COMPOUND CONTAINING A CH2=C< GROUP.
References Cited (Backward Citations)
US2255313A
Cited
US2642403A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |