US3073714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved collagen fiber sheet material
Assignee: United Shoe Machinery Corp
•
Filing: 1959-04-08
•
Granted: 1963-01-15
•
Expires: 1979-04-08
Abstract
No abstract record available.
Inventors
- 👤 Tu Shu-Tung
- 👤 John H Highberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:51
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/0002; D06N3/0015; D06N3/0018; D04; D04H; D04H1/00; D04H1/40; D04H1/44; D04H1/46; D04H1/48; D06N3/0043; D06N3/0054; Y; Y10; Y10S; Y10S128/00; Y10S128/08; Y10T; Y10T428/00; Y10T428/20; Y10T428/24; Y10T428/24273; Y10T428/24281; Y10T428/24322; Y10T428/24331; Y10T428/24339; Y10T428/24355; Y10T428/24438
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
80 words
A DELAMINATION-RESISTANT SHEET COMPRISING COLLAGEN FIBERS IN THE WATER-BONDED ASSOCIATION IN WHICH THEY ARE AFTER DEPOSITION FROM AN AQUEOUS DISPERSION OF COLLAGEN FIBERS AND DRYING, A SURFACE OF SAID SHEET BEING FORMED WITH FROM 600 TO 6000 CRATER-SHAPED HOLES PER SQUARE INCH, THE UPPER ENDS OF SAID HOLES BEING FROM 0.1 MM. TO 0.2 MM. ACROSS, THE FIBERS ORIGINALLY IN SAID HOLES FORMING THE WALLS OF SAID HOLES, AND RESIN SOLIDIFIED IN SAID HOLES FURTHER REINFORCING SAID SHEET AGAINT DELAMINATION.
References Cited (Backward Citations)
FR389662A
Cited
US1978620A
Cited
US2021163A
Cited
US2281945A
Cited
US2373033A
Cited
US2372433A
Cited
US2838363A
Cited
US2817596A
Cited
US2934447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |