US2785993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum surface with plural superimposed different resinous coatings
Assignee: Celanese Corp
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Filing: 1955-01-28
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Granted: 1957-03-19
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Expires: 1975-01-28
Abstract
No abstract record available.
Inventors
- 👤 Walter D Paist
- 👤 Francis J Rielly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:44
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D7/16; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31688; Y10T428/31855; Y10T428/31859; Y10T428/3188; Y10T428/31884
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
AN ALUMINUM SURFACE HAVING THEREON A FIRST COATING OF POLYVINYL BUTYRAL, A SECOND COATING OF A COPOLYMER OF MALEIC ANHYDRIDE AND AN ALKYL VINYL ETHER, AND A THIRD COATING OF A LOWER ALIPHATIC ACID ESTER OF CELLULOSE.
Claim 2
Dependent Claim
37 words
AN ALUMINUM SURFACE HAVING THEREON A FIRST COATING OF POLYVINYL BUTYRAL, A SECOND COATING OF A COPOLYMER OF MALEIC ANHYDRIDE AND AN ALKYL VINYL ETHER, AND A THIRD COATING OF A LOWER ALIPHATIC ACID ESTER OF CELLULOSE.
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) | 1960-03-18 | 1960-09-17 | 1961-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-18 | 1964-09-17 | 1965-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-18 | 1968-09-17 | 1969-03-19 | $7700.00 | Window Closed / Lapsed |