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Patent US2499723A successfully refreshed from Google Patents.
US2499723A
Expired / Lapsed
US
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Lubricants containing copolymers of ethylene and vinyl acetate
Assignee: EIDP Inc
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Filing: 1947-07-28
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Granted: 1950-03-07
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Expires: 1967-07-28
Abstract
No abstract record available.
Inventors
- 👤 Donald D Coffman
- 👤 John F Lontz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:00
CPC Classifications
G; G04; G04B; G04B31/00; G04B31/08; C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C10; C10M; C10M3/00; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/284; C10M2207/285; C10M2207/286; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2219/00; C10M2219/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF AN ETHYLENE/VINYL ACETATE POLYMER AND AN ESTER WHICH CONTAINS AT LEAST 10 CARBON ATOMS AND WHICH IS AN ESTER OF AN ALIPHATIC CARBOXYLIC ACID AND A PRIMARY ALIPHATIC SATURATED MONOHYDRIC ALCOHOL, SAID POLYMER BEING COMPLETELY SOLUBLE IN SAID ESTER AND HAVING AN ETHYLENE:VINYL ACETATE MOLE RATIO OF FROM 1:1 TO 6:1 AND BEING CONTAINED IN SAID COMPOSITION IN AMOUNT FROM 0.5% TO 30% BY WEIGHT OF SAID ESTER, SAID POLYMER BEING THAT OBTAINED BY POLYMERIZING A MIXTURE OF ETHYLENE AND VINYL ACETATE IN EXCESS OF 50 ATMOSPHERES IN CONTACT WITH A POLYMERIZATION CATALYST.
Claim 2
Dependent Claim
100 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF AN ETHYLENE/VINYL ACETATE POLYMER AND AN ESTER WHICH CONTAINS AT LEAST 10 CARBON ATOMS AND WHICH IS AN ESTER OF AN ALIPHATIC CARBOXYLIC ACID AND A PRIMARY ALIPHATIC SATURATED MONOHYDRIC ALCOHOL, SAID POLYMER BEING COMPLETELY SOLUBLE IN SAID ESTER AND HAVING AN ETHYLENE:VINYL ACETATE MOLE RATIO OF FROM 1:1 TO 6:1 AND BEING CONTAINED IN SAID COMPOSITION IN AMOUNT FROM 0.5% TO 30% BY WEIGHT OF SAID ESTER, SAID POLYMER BEING THAT OBTAINED BY POLYMERIZING A MIXTURE OF ETHYLENE AND VINYL ACETATE IN EXCESS OF 50 ATMOSPHERES IN CONTACT WITH A POLYMERIZATION CATALYST.
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) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |