Patent US2844559A successfully refreshed from Google Patents.
US2844559A
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Glycolic acid as a corrosion inhibitor in mixtures of ethylenic monomers and polyesters of alpha ethylenic dicarboxylic acids
Assignee: PPG Industries Inc
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Filing: 1954-06-17
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Granted: 1958-07-22
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Expires: 1974-06-17
Abstract
No abstract record available.
Inventors
- 👤 Earl E Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:42
CPC Classifications
C; C08; C08F; C08F299/00; C08F299/02; C08F299/04; C08F299/0478; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
AN INTERPOLYMERIZABLE MIXTURE OF (A) A MONOMER CONTAINING A >C=CH2 GROUP, (B) A POLYESTER OF A DIHYDRIC ALCOHOL AND AN ALPHA-BETA ETHYLENIC DICARBOXYLIC ACID AND, (C) GLYCOLIC ACID, THE LATTER BEING IN AN AMOUNT OF ABOUT 0.01 TO 5 PERCENT BASED UPON THE INTERPOLYMERIZABLE MIXTURE.
Claim 2
Dependent Claim
45 words
AN INTERPOLYMERIZABLE MIXTURE OF (A) A MONOMER CONTAINING A >C=CH2 GROUP, (B) A POLYESTER OF A DIHYDRIC ALCOHOL AND AN ALPHA-BETA ETHYLENIC DICARBOXYLIC ACID AND, (C) GLYCOLIC ACID, THE LATTER BEING IN AN AMOUNT OF ABOUT 0.01 TO 5 PERCENT BASED UPON THE INTERPOLYMERIZABLE MIXTURE.
References Cited (Backward Citations)
US2349044A
Cited
US2566739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |