Patent US3313757A successfully refreshed from Google Patents.
US3313757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinylidene chloride-methyl acrylatemethyl methacrylate-acrylonitrile copolymer latices
Assignee: WR Grace and Co
•
Filing: 1964-03-09
•
Granted: 1967-04-11
•
Expires: 1984-03-09
Abstract
No abstract record available.
Inventors
- 👤 Trofimow Alex
- 👤 Elizabeth C Dearborn
- 👤 Norbert K Mader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:59
CPC Classifications
C; C08; C08F; C08F214/00; C08F214/02; C08F214/04; C08F214/08; C09; C09D; C09D127/00; C09D127/02; C09D127/04; C09D127/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A FILM-FORMING COMPOSITION FOR PROVIDING FILMS HAVING HIGH VAPOR BARRIER CHARACTERISTICS AND FLEXIBILITY COMPRISING AN AQUEOUS DISPERSION OF A COPOLYMER OF ABOUT 87 TO 94 WEIGHT PERCENT OF VINYLIDENE CHLORIDE, ABOUT 4 TO 7 WEIGHT PERCENT OF METHYL ACRYLATE, ABOUT 1.5 TO 6 WEIGHT PERCENT OF METHYL METHACRYLATE, AND ABOUT 1 TO 3 WEIGHT PERCENT OF ACRYLONITRILE.
Claim 2
Dependent Claim
57 words
A FILM-FORMING COMPOSITION FOR PROVIDING FILMS HAVING HIGH VAPOR BARRIER CHARACTERISTICS AND FLEXIBILITY COMPRISING AN AQUEOUS DISPERSION OF A COPOLYMER OF ABOUT 87 TO 94 WEIGHT PERCENT OF VINYLIDENE CHLORIDE, ABOUT 4 TO 7 WEIGHT PERCENT OF METHYL ACRYLATE, ABOUT 1.5 TO 6 WEIGHT PERCENT OF METHYL METHACRYLATE, AND ABOUT 1 TO 3 WEIGHT PERCENT OF ACRYLONITRILE.
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) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |