US2934447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collagen fiber masses and methods of making the same
Assignee: United Shoe Machinery Corp
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Filing: 1957-10-22
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Granted: 1960-04-26
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Expires: 1977-10-22
Abstract
No abstract record available.
Inventors
- 👤 John H Highberger
- 👤 Robert A Whitmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:36
CPC Classifications
C; C08; C08L; C08L89/00; C08L89/04; C08L89/06; Y; Y10; Y10S; Y10S128/00; Y10S128/08; Y10S530/00; Y10S530/827; Y10S530/842
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A METHOD FOR FORMING INTERLOCKED COLLAGEN FIBER MASSES COMPRISING THE STEPS OF LIGHTLY TANNING SKIN TO INHIBIT HYDRATION OF THE FIBERS OF THE SKIN, PLACING SAID SKIN IN WATER, TEARING SAID SKIN INTO FIBERS SUSPENDED IN SAID WATER, SEPARATING THE FIBERS FROM A MAJOR PORTION OF THE WATER, FORMING A MIXTURE OF SAID FIBERS AND AN AQUEOUS SOLUTION OF COLLAGEN, SAID MIXTURE HAVING AN IONIC STRENGTH OF 0.1 TO 0.5 AND A PH OF FROM ABOUT 5.2 TO ABOUT 9.5 AND BEING FORMED AND MAINTAINED AT A TEMPERATURE BELOW ABOUT 5*C. TO PREVENT PRECIPITATION OF COLLAGEN, AND WARMING THE RESULTANT MIXTURE TO A TEMPERATURE BELOW 37*C. SUFFICIENT TO PRECIPITATE COL-
Claim 2
Independent Claim
110 words
A METHOD FOR FORMING INTERLOCKED COLLAGEN FIBER MASSES COMPRISING THE STEPS OF LIGHTLY TANNING SKIN TO INHIBIT HYDRATION OF THE FIBERS OF THE SKIN, PLACING SAID SKIN IN WATER, TEARING SAID SKIN INTO FIBERS SUSPENDED IN SAID WATER, SEPARATING THE FIBERS FROM A MAJOR PORTION OF THE WATER, FORMING A MIXTURE OF SAID FIBERS AND AN AQUEOUS SOLUTION OF COLLAGEN, SAID MIXTURE HAVING AN IONIC STRENGTH OF 0.1 TO 0.5 AND A PH OF FROM ABOUT 5.2 TO ABOUT 9.5 AND BEING FORMED AND MAINTAINED AT A TEMPERATURE BELOW ABOUT 5*C. TO PREVENT PRECIPITATION OF COLLAGEN, AND WARMING THE RESULTANT MIXTURE TO A TEMPERATURE BELOW 37*C. SUFFICIENT TO PRECIPITATE COL-
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) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |