US2773049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Salicylic acid ester as color inhibitor for polyester-monomer resins
Assignee: PPG Industries Inc
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Filing: 1953-12-07
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Granted: 1956-12-04
•
Expires: 1973-12-07
Abstract
No abstract record available.
Inventors
- 👤 Cowee Merle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:03
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/134; C08K5/1345
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A HARD RESINOUS PRODUCT HAVING A HIGH COLOR STABILITY AND COMPRISING AN INTERPOLYMER OF (A) A POLYESTER OF A DIHYDRIC ALCOHOL AND AN ALPHA-BETA ETHYLENIC DICARBOXYLIC ACID (B) A MONOMER CONTAINING A >C=CH2 GROUP AND (C) AN ESTER OF SALICYLIC ACID SAID ESTER BEING INCORPORATED IN THE INTERPOLYMER.
Claim 2
Dependent Claim
48 words
A HARD RESINOUS PRODUCT HAVING A HIGH COLOR STABILITY AND COMPRISING AN INTERPOLYMER OF (A) A POLYESTER OF A DIHYDRIC ALCOHOL AND AN ALPHA-BETA ETHYLENIC DICARBOXYLIC ACID (B) A MONOMER CONTAINING A >C=CH2 GROUP AND (C) AN ESTER OF SALICYLIC ACID SAID ESTER BEING INCORPORATED IN THE INTERPOLYMER.
References Cited (Backward Citations)
US2627510A
Cited
US2617748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |