Patent US3178301A successfully refreshed from Google Patents.
US3178301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reconstitutable acid solubilized collagen
Assignee: Armour and Co
•
Filing: 1960-09-19
•
Granted: 1965-04-13
•
Expires: 1980-09-19
Abstract
No abstract record available.
Inventors
- 👤 Arthur Veis
- 👤 Jerome Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:32
CPC Classifications
C; C09; C09H; C09H3/00; A; A22; A22C; A22C13/00; A22C13/0013; A22C13/0016; C08; C08H; C08H1/00; C08H1/06; C08L; C08L89/00; C08L89/04; C08L89/06; D; D01; D01F; D01F4/00; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/842
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
THE METHOD OF PREPARING RECONSTITUTABLE SOLUBILIZED COLLAGEN, COMPRISING EXTRACTING A SLURRY OF SEPARATED NATIVE COLLAGEN FIBERS IN AN AQUEOUS SOLUTION OF AN ORGANIC ACID AT A TEMPERATURE ABOUT 30*C., BUT NOT OVER 70*C. TO SOLUBILIZE THE COLLAGEN IN SAID FIBERS, SAID ORGANIC ACID HAVING A CONCENTRATION WITHIN THE RANGE FROM .01 TO 1 MOLAR AND BEING SELECTED FROM THE GROUP CONSISTING OF CITRIC ACID, GLYCOLIC ACID, LACTIC ACID, HYDROXYBUTYRIC ACID, BENZILIC ACID, AND GLYCEROL PHOSPHORIC ACID, SAID EXTRATION BEING CARRIED OUT AND COMPLETED IN A PERIOD OF LESS THAN FOUR HOURS, THEREBY OBTAINING AN ENHANCED PROPORTION OF SOLUBILIZED COLLAGEN IN RECONSTITUTABLE FORM, AND SUBSEQUENTLY RECONSTITUTING SAID SOLUBILIZED COLLAGEN TO FIBROUS COLLAGEN HAVING THE CROSS-STRIATIONS OF NATIVE COLLAGEN.
Claim 2
Independent Claim
117 words
THE METHOD OF PREPARING RECONSTITUTABLE SOLUBILIZED COLLAGEN, COMPRISING EXTRACTING A SLURRY OF SEPARATED NATIVE COLLAGEN FIBERS IN AN AQUEOUS SOLUTION OF AN ORGANIC ACID AT A TEMPERATURE ABOUT 30*C., BUT NOT OVER 70*C. TO SOLUBILIZE THE COLLAGEN IN SAID FIBERS, SAID ORGANIC ACID HAVING A CONCENTRATION WITHIN THE RANGE FROM .01 TO 1 MOLAR AND BEING SELECTED FROM THE GROUP CONSISTING OF CITRIC ACID, GLYCOLIC ACID, LACTIC ACID, HYDROXYBUTYRIC ACID, BENZILIC ACID, AND GLYCEROL PHOSPHORIC ACID, SAID EXTRATION BEING CARRIED OUT AND COMPLETED IN A PERIOD OF LESS THAN FOUR HOURS, THEREBY OBTAINING AN ENHANCED PROPORTION OF SOLUBILIZED COLLAGEN IN RECONSTITUTABLE FORM, AND SUBSEQUENTLY RECONSTITUTING SAID SOLUBILIZED COLLAGEN TO FIBROUS COLLAGEN HAVING THE CROSS-STRIATIONS OF NATIVE COLLAGEN.
References Cited (Backward Citations)
GB606427A
Cited
US2521704A
Cited
US2934446A
Cited
US2897044A
Cited
US2934447A
Cited
US3073702A
Cited
US3071483A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |