US2908602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multilayer materials including layers of multicellular synthetic polymer
Assignee: Rhone Poulenc SA
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Filing: 1957-10-11
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Granted: 1959-10-13
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Expires: 1977-10-11
Abstract
No abstract record available.
Inventors
- 👤 Collardeau Georges
- 👤 Tourniaire Claude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:25
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/36; C08J9/365; B; B29; B29C; B29C70/00; B29C70/003; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B27/00; B29K; B29K2309/00; B29K2309/08; C08J2325/00; C08J2325/02; C08J2325/04; C08J2325/06; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/24996; Y10T428/249987; Y10T428/249991; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31928; Y10T442/00; Y10T442/30; Y10T442/3325; Y10T442/3366
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A PROCESS FOR THE PRODUCTION OF MULTILAYER MATERIAL WHICH COMPRISES FORMING ON AN ELEMENT OF MULTCELLULAR POLYSTYRENE A SUBSTANTIALLY DRY AND SOLVENT-FREE SURFACE COATING OF A POLYVINYL ESTER SELECTED FROM THE GROUP WHICH CONSISTS OF POLYVINYL ACETATE AND COPOLYMERS OF VINYL ACETATE WITH VINYL CHLORIDE, APPLYING TO THE SAID COATING A MIXTURE OF AN UNSATURATED POLUESTER AMD MONOMERIC STYRENE AND A FIBROUS MATERIAL AND COPOLUMERISING THE UNSATURATED POLYESTER AND STYRENE IN SITU.
Claim 2
Dependent Claim
72 words
A PROCESS FOR THE PRODUCTION OF MULTILAYER MATERIAL WHICH COMPRISES FORMING ON AN ELEMENT OF MULTCELLULAR POLYSTYRENE A SUBSTANTIALLY DRY AND SOLVENT-FREE SURFACE COATING OF A POLYVINYL ESTER SELECTED FROM THE GROUP WHICH CONSISTS OF POLYVINYL ACETATE AND COPOLYMERS OF VINYL ACETATE WITH VINYL CHLORIDE, APPLYING TO THE SAID COATING A MIXTURE OF AN UNSATURATED POLUESTER AMD MONOMERIC STYRENE AND A FIBROUS MATERIAL AND COPOLUMERISING THE UNSATURATED POLYESTER AND STYRENE IN SITU.
References Cited (Backward Citations)
US2861910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |