Patent US4156664A successfully refreshed from Google Patents.
US4156664A
Expired / Lapsed
US
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Film forming SGP
Assignee: VARIED INVESTMENTS Inc
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Filing: 1978-01-31
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Granted: 1979-05-29
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Expires: 1998-01-31
Abstract
Abstract Film forming starch-hydrolyzed polyacrylonitrile graft copolymer and latex composition.
Inventors
- 👤 Earl L. Skinner
- 👤 Lyle F. Elmquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:12
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/225; A61L15/42; A61L15/60; C; C08; C08L; C08L51/00; C08L51/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
48 words
A combination of starch-hydrolyzed polyacrylonitrile graft copolymer and a latex comprising about 2 to 98% by weight starch-hydrolyzed polyacrylonitrile graft copolymer and about 2 to 98% by weight of a latex selected from anionic and nonionic latices having glass transition points between about 20° F. and 110° F.
Claim 2
Dependent Claim
48 words
A combination of starch-hydrolyzed polyacrylonitrile graft copolymer and a latex comprising about 2 to 98% by weight starch-hydrolyzed polyacrylonitrile graft copolymer and about 2 to 98% by weight of a latex selected from anionic and nonionic latices having glass transition points between about 20° F. and 110° F.
Claim 3
Dependent Claim
13 words
The combination of claim 1 in which the latex is an acrylic latex.
References Cited (Backward Citations)
US3485777A
Cited
US3935099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-28 | 1982-11-27 | 1983-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-28 | 1986-11-27 | 1987-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-28 | 1990-11-27 | 1991-05-29 | $7700.00 | Window Closed / Lapsed |