Patent US3634561A successfully refreshed from Google Patents.
US3634561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collagen products
Assignee: JM Huber Corp
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Filing: 1969-03-13
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Granted: 1972-01-11
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Expires: 1989-03-13
Abstract
Abstract IN THE PREPARATION OF COLLAGEN DOUGH THE EXTRACTABILITY, WHICH IS A MEASURE OF ACID SOLUBILITY, IS DETERMINED BY EXTRACTION WITH AN ACID, CENTRIFUGATION, AND DETERMINATION OF ACID-SOLUBLE MATTER IN THE LIQUID PORTION. EXTRACTABILITY WITHIN A RANGE OF 8% TO 16%, DRY WEIGHT BASIS, A SOLIDS CONTENT WITHIN THE RANGE OF 4.5% TO 6.5% DRY WEIGHT BASIS, AND AN APPARENT VISCOSITY BETWEEN 45 TO 80 POISES ARE CHARACTERISTICS WHICH MINIMIZE VARIATIONS IN QUALITY AND PROVIDE A GREATER PROPORTION OF SATISFACTORY CASINGS FOR SAUSAGES OR THE LIKE.
Inventors
- 👤 Arthur Ernest Hawkins
- 👤 Kenneth William Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:17
CPC Classifications
C; C08; C08L; C08L89/00; C08L89/04; C08L89/06; A; A22; A22C; A22C13/00; A22C13/0013; A22C13/0016
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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |