US3497584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing polysaccharide films and fiber- of paper-reinforced polysaccharide films
Assignee: Continental Group Inc
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Filing: 1967-03-29
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Granted: 1970-02-24
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Expires: 1987-03-29
Abstract
No abstract record available.
Inventors
- 👤 Douglas J Bridgeford
- 👤 Dudley M Gallagher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:45
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/21; D21H17/24; A; A22; A22C; A22C13/00; A22C13/0013; B; B01; B01J; B01J47/00; B01J47/12; B01J47/127; C; C08; C08B; C08B33/00; C08B33/02; C08B5/00; C08B9/00; A22C2013/0066; A22C2013/0069; A22C2013/0096
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) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |