Patent US2570253A successfully refreshed from Google Patents.
US2570253A
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Stable aqueous dispersions of copolymers of vinyl esters, neutral ethylenic polyesters, and acrylic acid, and method of making
Assignee: 3M Co
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Filing: 1946-10-25
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Granted: 1951-10-09
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Expires: 1966-10-25
Abstract
No abstract record available.
Inventors
- 👤 William E Lundquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:29
CPC Classifications
C; C08; C08F; C08F218/00; C08F218/02; C08F218/04; C08F218/10; C08F222/00; C08F222/10; C08F222/12; C08F222/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A STABLE AQUEOUS EMULSION OF A TOUGH, ADHERENT, FILM-FORMING COPOLYMER OF MONOMERS CONSISTING PRINCIPALLY OF (A) A VINYL ESTER OF A SATURATED FATTY ACID OF NOT MORE THAN THREE CARBON ATOMS, (B) A NEUTRAL ESTER OF AN ETHYLENEALPHA, BETA-DICARBOXYLIC ACID AND AT LEAST ONE SATURATED NON-TERTIARY ALCOHOL HAVING THE FORMULA
Claim 2
Dependent Claim
50 words
A STABLE AQUEOUS EMULSION OF A TOUGH, ADHERENT, FILM-FORMING COPOLYMER OF MONOMERS CONSISTING PRINCIPALLY OF (A) A VINYL ESTER OF A SATURATED FATTY ACID OF NOT MORE THAN THREE CARBON ATOMS, (B) A NEUTRAL ESTER OF AN ETHYLENEALPHA, BETA-DICARBOXYLIC ACID AND AT LEAST ONE SATURATED NON-TERTIARY ALCOHOL HAVING THE FORMULA
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-08 | 1955-04-09 | 1955-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-08 | 1959-04-09 | 1959-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-08 | 1963-04-09 | 1963-10-09 | $7700.00 | Window Closed / Lapsed |