Patent US2883316A successfully refreshed from Google Patents.
US2883316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water vapor permeable, waterproof materials
Assignee: United Shoe Machinery Corp
•
Filing: 1955-06-01
•
Granted: 1959-04-21
•
Expires: 1975-06-01
Abstract
No abstract record available.
Inventors
- 👤 James F Leahy
- 👤 Frederic C Merriam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:37
CPC Classifications
A; A43; A43B; A43B23/00; A43B23/02; A43B23/0205; A43B23/021; A43B23/0215; A43B23/022; A43B23/0235; A43B23/0245; A43B23/026; Y; Y10; Y10S; Y10S36/00; Y10S36/02; Y10S526/00; Y10S526/93; Y10T; Y10T428/00; Y10T428/26; Y10T428/269
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
86 words
A WATERPROOF, WATER VAPOR PERMEABLE, LAMINATED LEATHER SHEET COMPRISING LAYERS OF LEATHER JOINED ON THEIR INNER SURFACES TO AND CONNECTED TOGETHER BY AN INTERMEDIATE, CONTINUOUS, NON-POROUS SUBSTANTIALLY WATER-INSOLUBEL FILM OF A RESINOUS COPOLYMER OF FROM 30 TO 70 MOL PERCENT OF ETHYL ACRYLATE AND FROM 70 TO 30 MOL PERCENT OF ACRYLIC ACID, SAID FILM BEING FORMED 2 TO 10 MILS IN THICKNESS AND HAVING A WATER VAPOR PERMEABILITY NOT SUGSTANTIALY LESS THAN 10X10-8 GRAMS/HR.XCCM.XMM. OF HG WATER VAPOR PRESSURE AND BEING IMPERBVIOUS TO LIQUID WATER.
References Cited (Backward Citations)
US117168A
Cited
US483289A
Cited
US1309461A
Cited
US2261313A
Cited
US2371868A
Cited
US2285009A
Cited
US2440092A
Cited
US2607711A
Cited
US2673171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |