US2978356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated structure and process for preparing same
Assignee: GAF Chemicals Corp
•
Filing: 1958-03-18
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Granted: 1961-04-04
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Expires: 1978-03-18
Abstract
No abstract record available.
Inventors
- 👤 Arne E Gomsi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:27
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B29; B29C; B29C41/00; B29C41/24; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31855; Y10T428/3188; Y10T428/31884; Y10T428/31891; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31986
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A LAMINATED FILM CASTING BAND FOR USE IN CASTING FILMS COMPRISING IN THAT ORDER, A STAINLESS STEEL CASTING BAND, A BONDING LAYER CONSISTING OF THE COPOLYMER OF MALEIC ANHYDRIDE WITH A LOWER ALKYLVINYL ETHER AND A CELLULOSE ESTER LAYER HAVING A SAPONIFIED AND DE-ESTERIFIED OUTER SURFACE, SAID COPOLYMER LAYER BEING BONDED DIRECTLY
Claim 2
Dependent Claim
52 words
A LAMINATED FILM CASTING BAND FOR USE IN CASTING FILMS COMPRISING IN THAT ORDER, A STAINLESS STEEL CASTING BAND, A BONDING LAYER CONSISTING OF THE COPOLYMER OF MALEIC ANHYDRIDE WITH A LOWER ALKYLVINYL ETHER AND A CELLULOSE ESTER LAYER HAVING A SAPONIFIED AND DE-ESTERIFIED OUTER SURFACE, SAID COPOLYMER LAYER BEING BONDED DIRECTLY
References Cited (Backward Citations)
US1988550A
Cited
US2205466A
Cited
US2280055A
Cited
US2423503A
Cited
US2744098A
Cited
US2756163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |