US2889299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grease resistant cellulosic webs coated with a linear anionic thermoplastic ethyl acrylate-acrylonitrile-methacrylic acid polymer containing a hydrophilic inorganic pigment as extender and composition for manufacture thereof
Assignee: Wyeth Holdings LLC
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Filing: 1957-07-19
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Granted: 1959-06-02
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Expires: 1977-07-19
Abstract
No abstract record available.
Inventors
- 👤 Daniel D Ritson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:17
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/56; D21H19/58; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A FLUID COMPOSITION WHICH WHEN APPLIED TO A WATERLAID CELLULOSIC WEB AND DRIED THEREON PROVIDES SAID WEB WITH A FLEXIBLE ADHERENT COATING HAVING EXCELLENT RESISTANCE TO PENETRATION BY GREASES YET CONTAINS A SUBSTANTIAL AMOUNT OF MINERAL MATTER AS EXTENDER, WHICH CONSISTS ESSENTIALLY OF AN AQUEOUS ANIONIC EMULSION OF THE OIL-IN WATER TYPE OF A LINEAR ANIONIC FILM FORMING THERMOPLASTIC POLYMER IN PREDOMINANTLY AMMONIUM SALT FORM PREPARED BY VINYL POLYMERIZATION OF ETHYL ACRYLATE IN MAJOR AMOUNT, ACRYLONITRILE IN MINOR AMOUNT AND METHACRYLIC ACID IN SMALL BUT EFFECTIVE AMOUNT AS AGENT RENDERING SAID POLYMER ANIONIC, SAID EMULSION HAVING UNIFORMLY DISTRIBUTED THROUGH THE AQUEOUS PHASE THEREOF A HYDROPHILIC INORGANIC PIGMENT IN AMOUNT BETWEEN ABOUT 1/5 AND 3/4 OF THE WEIGHT OF SAID POLYMER.
Claim 2
Dependent Claim
120 words
A FLUID COMPOSITION WHICH WHEN APPLIED TO A WATERLAID CELLULOSIC WEB AND DRIED THEREON PROVIDES SAID WEB WITH A FLEXIBLE ADHERENT COATING HAVING EXCELLENT RESISTANCE TO PENETRATION BY GREASES YET CONTAINS A SUBSTANTIAL AMOUNT OF MINERAL MATTER AS EXTENDER, WHICH CONSISTS ESSENTIALLY OF AN AQUEOUS ANIONIC EMULSION OF THE OIL-IN WATER TYPE OF A LINEAR ANIONIC FILM FORMING THERMOPLASTIC POLYMER IN PREDOMINANTLY AMMONIUM SALT FORM PREPARED BY VINYL POLYMERIZATION OF ETHYL ACRYLATE IN MAJOR AMOUNT, ACRYLONITRILE IN MINOR AMOUNT AND METHACRYLIC ACID IN SMALL BUT EFFECTIVE AMOUNT AS AGENT RENDERING SAID POLYMER ANIONIC, SAID EMULSION HAVING UNIFORMLY DISTRIBUTED THROUGH THE AQUEOUS PHASE THEREOF A HYDROPHILIC INORGANIC PIGMENT IN AMOUNT BETWEEN ABOUT 1/5 AND 3/4 OF THE WEIGHT OF SAID POLYMER.
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) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |