US3303038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of forming collagen articles and dispersions
Assignee: Ethicon Inc
•
Filing: 1965-07-29
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Granted: 1967-02-07
•
Expires: 1985-07-29
Abstract
No abstract record available.
Inventors
- 👤 Howard B Klevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:10
CPC Classifications
A; A22; A22C; A22C13/00; A22C13/0013; A22C13/0016
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
IN A PROCESS OF FORMING A DISPERSION OF COLLAGEN FROM SMALL PIECES OF COLLAGEN WITHOUT CONTACTING THE SAME WITH AN ENZYME THE STEPS OF TREATING THE PIECES OF COLLAGEN WITH A NON-IONIC DETERGENT AND A SOLUBILIZING AGENT FOR CALCIUM AND BOUND IONS, REMOVING THE DETERGENT FROM THE COLLAGEN AND SWELLING THE COLLAGEN TO FORM A DISPERSION THEREOF.
Claim 2
Dependent Claim
57 words
IN A PROCESS OF FORMING A DISPERSION OF COLLAGEN FROM SMALL PIECES OF COLLAGEN WITHOUT CONTACTING THE SAME WITH AN ENZYME THE STEPS OF TREATING THE PIECES OF COLLAGEN WITH A NON-IONIC DETERGENT AND A SOLUBILIZING AGENT FOR CALCIUM AND BOUND IONS, REMOVING THE DETERGENT FROM THE COLLAGEN AND SWELLING THE COLLAGEN TO FORM A DISPERSION THEREOF.
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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |