Patent US3484256A successfully refreshed from Google Patents.
US3484256A
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Fibrous food casings and method of producing same
Assignee: Viskase Corp
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Filing: 1967-01-31
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Granted: 1969-12-16
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Expires: 1987-01-31
Abstract
No abstract record available.
Inventors
- 👤 Herman S Chiu
- 👤 Frank T Kambara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:50
CPC Classifications
A; A22; A22C; A22C13/00; A22C13/0013; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1303; Y10T428/1307; Y10T428/31504; Y10T428/31725; Y10T428/31761; Y10T428/31855; Y10T428/31859; Y10T428/31862; Y10T428/31866; Y10T428/3187; Y10T428/31873; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982
Claims Analysis
Total Claims: 0
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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) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |