Patent US3512997A successfully refreshed from Google Patents.
US3512997A
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US
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Extrusion of microporous collagen articles
Assignee: Continental Group Inc
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Filing: 1966-09-29
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Granted: 1970-05-19
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Expires: 1986-09-29
Abstract
No abstract record available.
Inventors
- 👤 Mauj A Cohly
- 👤 James W Sanner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:54
CPC Classifications
A; A22; A22C; A22C13/00; A22C13/0013; A22C13/0016; B; B29; B29C; B29C48/00; B29C48/03; B29C48/07; B29C48/08; B29C48/09; B29C48/10; B29C48/25; B29C48/88; B29C48/919
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1427330A
Cited
US2000835A
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US2202566A
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US2492425A
Cited
US3123653A
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US3373046A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |