Patent US2849409A successfully refreshed from Google Patents.
US2849409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid coating composition comprising a methyl methacrylate polymer and cellulose acetate butyrate
Assignee: EIDP Inc
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Filing: 1956-02-07
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Granted: 1958-08-26
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Expires: 1976-02-07
Abstract
No abstract record available.
Inventors
- 👤 John L Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:58
CPC Classifications
C; C09; C09D; C09D101/00; C09D101/08; C09D101/10; C09D101/14; C09D133/00; C09D133/04; C09D133/06; C09D133/10; C09D133/12; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31645; Y10T428/31649; Y10T428/31678; Y10T428/31692; Y10T428/31699; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A LIQUID COATING COMPOSITION COMPRISING AS AN ESSENTIAL FILM-FORMING CONSTITUENT A POLYMER OF METHYL METHACRYLATE HAVING A RELATIVE VICOSITY OF ABOUT 1.117 TO 1.196, CELLULOSE ACETATE BUTYRATE HAVING A VICOSITY OF ABOUT 0.1 TO 2.0 SECONDS, AND A SOLVENT FOR SAID POLYMER AND CELLULOSE ACETATE BUTYRATE, THE RATE RATIO OF CELLLULOSE ACETATE BUTYRATE TO POLYMER OF METHYL METHACRYLATE BEING BETWEEN 15.85 AND 75.25, AND SAID POLYMER OF METHYL METHACRYLATE BEING A MEMBER OF THE GROUP CONSISTING OF HOMOPOLYMERS OF METHYL METHYACRYLATE AND COPOLYMERS OF METHYL METHACRYLATE WITH FROM 2 TO 25% BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF ACRYLIC ACID, METHYACRYLIC ACID A 1 TO 4 CARBON ALKYL ESTER OF ACRYLIC ACID, A 2 TO 4 CARBON ALKYL ESTER OF METHACRYLIC ACID, VINYL ACETATE, ACRYLONTRILE, AND STYRENE.
Claim 2
Dependent Claim
130 words
A LIQUID COATING COMPOSITION COMPRISING AS AN ESSENTIAL FILM-FORMING CONSTITUENT A POLYMER OF METHYL METHACRYLATE HAVING A RELATIVE VICOSITY OF ABOUT 1.117 TO 1.196, CELLULOSE ACETATE BUTYRATE HAVING A VICOSITY OF ABOUT 0.1 TO 2.0 SECONDS, AND A SOLVENT FOR SAID POLYMER AND CELLULOSE ACETATE BUTYRATE, THE RATE RATIO OF CELLLULOSE ACETATE BUTYRATE TO POLYMER OF METHYL METHACRYLATE BEING BETWEEN 15.85 AND 75.25, AND SAID POLYMER OF METHYL METHACRYLATE BEING A MEMBER OF THE GROUP CONSISTING OF HOMOPOLYMERS OF METHYL METHYACRYLATE AND COPOLYMERS OF METHYL METHACRYLATE WITH FROM 2 TO 25% BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF ACRYLIC ACID, METHYACRYLIC ACID A 1 TO 4 CARBON ALKYL ESTER OF ACRYLIC ACID, A 2 TO 4 CARBON ALKYL ESTER OF METHACRYLIC ACID, VINYL ACETATE, ACRYLONTRILE, AND STYRENE.
References Cited (Backward Citations)
US2702255A
Cited
US2628923A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |