US3294579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leather-like material and method of making the same
Assignee: United Shoe Machinery Corp
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Filing: 1963-05-09
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Granted: 1966-12-27
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Expires: 1983-05-09
Abstract
No abstract record available.
Inventors
- 👤 Tu Shu-Tung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:03
CPC Classifications
C; C08; C08L; C08L89/00; C08L89/04; C08L89/06; Y; Y10; Y10S; Y10S428/00; Y10S428/904; Y10T; Y10T442/00; Y10T442/60; Y10T442/608; Y10T442/614; Y10T442/619; Y10T442/697; Y10T442/698
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
THE PROCESS OF FORMING A LEATHER-LIKE MATERIAL INCLUDING THE STEPS OF APPLYING TO A SIDE OF A SHEET OF INTERMESHED TEXTILE FIBERS A QUANTITY OF AN AQUEOUS SUSPENSION OF SHORT TEXTILE FIBERS AND AT LEAST 1/2 PART BY WEIGHT OF SWOLLEN DISTINCT FINE COLLAGEN FIBERS OF MICROSCOPIC SIZE TO ONE PART BY WEIGHT IF SAID SHORT TEXTILE FIBERS TO INTRODUCE COLLAGEN FIBERS AND SHORT TEXTILE FIBERS INTO SPACES BETWEEN SAID INTERMESHED TEXTILE FIBERS UB A PORTION OF THE THICKNESS OF SAID SHEET EXTENDING IN FROM SAID SIDE, SAID SUSPENSION HAVING A PH OUTSIDE THE ISOELECTRIC RANGE OF SAID COLLAGEN FIBERS; AND REMOVING SWELLING WATER FROM SAID COLLAGEN FIBER TO REAGGREGATE THEM INTO A LARGER COLLAGEN FIBER STRUCTURE BINDING SAID INTERMESHED FIBERS AND SHORT TEXTILE FIBERS.
Claim 2
Dependent Claim
125 words
THE PROCESS OF FORMING A LEATHER-LIKE MATERIAL INCLUDING THE STEPS OF APPLYING TO A SIDE OF A SHEET OF INTERMESHED TEXTILE FIBERS A QUANTITY OF AN AQUEOUS SUSPENSION OF SHORT TEXTILE FIBERS AND AT LEAST 1/2 PART BY WEIGHT OF SWOLLEN DISTINCT FINE COLLAGEN FIBERS OF MICROSCOPIC SIZE TO ONE PART BY WEIGHT IF SAID SHORT TEXTILE FIBERS TO INTRODUCE COLLAGEN FIBERS AND SHORT TEXTILE FIBERS INTO SPACES BETWEEN SAID INTERMESHED TEXTILE FIBERS UB A PORTION OF THE THICKNESS OF SAID SHEET EXTENDING IN FROM SAID SIDE, SAID SUSPENSION HAVING A PH OUTSIDE THE ISOELECTRIC RANGE OF SAID COLLAGEN FIBERS; AND REMOVING SWELLING WATER FROM SAID COLLAGEN FIBER TO REAGGREGATE THEM INTO A LARGER COLLAGEN FIBER STRUCTURE BINDING SAID INTERMESHED FIBERS AND SHORT TEXTILE FIBERS.
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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |