US3551535A
Expired / Lapsed
US
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Freezing-mixing process for making homogeneous collagen mixtures
Assignee: Union Carbide Corp
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Filing: 1967-09-14
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Granted: 1970-12-29
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Expires: 1987-09-14
Abstract
No abstract record available.
Inventors
- 👤 William E Henderson
- 👤 Camilla B Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:21
CPC Classifications
D; D01; D01F; D01F4/00; A; A22; A22C; A22C13/00; A22C13/0013; A22C13/0016; B; B01; B01F; B01F23/00; B01F23/60; B01F23/70; B01F23/709; B29; B29B; B29B7/00; B29B7/80; B29B7/82; C; C08; C08L; C08L89/00; C08L89/04; C08L89/06; C09; C09H; C09H5/00; D01F1/00; D01F1/02; D01F1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-28 | 1974-06-29 | 1974-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-28 | 1978-06-29 | 1978-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-28 | 1982-06-29 | 1982-12-29 | $7700.00 | Window Closed / Lapsed |