US3398042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leather laminates
Assignee: Bayer AG
•
Filing: 1963-01-02
•
Granted: 1968-08-20
•
Expires: 1983-01-02
Abstract
No abstract record available.
Inventors
- 👤 Odenthal Julius Peter
- 👤 Cologne Bezirk
- 👤 Muller Erwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:19
CPC Classifications
C; C09; C09J; C09J175/00; C09J175/04; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/40; C08G18/48; C08G18/4833; C08G18/56; C08G18/70; C08G18/72; C08G18/77; C08G18/776; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31558
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
LEATHER BONDED TO A POROUS SUBSTRATE BY MEANS OF AN ADHESIVE, SAID ADHESIVE WHEN SET HAVING A VAPOR AND AIR PERMEABILITY CHARACTERISTICS SIMILAR TO THAT OF NATURAL LEATHER, AND COMPRISING THE NON-FOAMING REACTION PRODUCT OF A WATER-SOLUBLE ORGANIC DIHYDROXY COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE OXIDES, POLYACETALS AND POLYESTERS, SAID ORGANIC COMPOUND HAVING A MOLEUCLAR WEIGHT WITHIN THE RANGE OF FROM ABOUT 500 TO ABOUT 3000 AND AN HYDROXYL NUMBER WITHIN THE RANGE OF FROM ABOUT 225 TO ABOUT 35 WITH LESS THAN AN EQUIVALENT QUATNITY OF POLYISOCYANATE THAN THAT REQUIRED T REACT WITH ALL OF THE HYDROXYL GOUPS OF THE WATER-INSOLUBLE ORGANIC DIHYDROXYL COMPOUND.
Claim 2
Dependent Claim
107 words
LEATHER BONDED TO A POROUS SUBSTRATE BY MEANS OF AN ADHESIVE, SAID ADHESIVE WHEN SET HAVING A VAPOR AND AIR PERMEABILITY CHARACTERISTICS SIMILAR TO THAT OF NATURAL LEATHER, AND COMPRISING THE NON-FOAMING REACTION PRODUCT OF A WATER-SOLUBLE ORGANIC DIHYDROXY COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE OXIDES, POLYACETALS AND POLYESTERS, SAID ORGANIC COMPOUND HAVING A MOLEUCLAR WEIGHT WITHIN THE RANGE OF FROM ABOUT 500 TO ABOUT 3000 AND AN HYDROXYL NUMBER WITHIN THE RANGE OF FROM ABOUT 225 TO ABOUT 35 WITH LESS THAN AN EQUIVALENT QUATNITY OF POLYISOCYANATE THAN THAT REQUIRED T REACT WITH ALL OF THE HYDROXYL GOUPS OF THE WATER-INSOLUBLE ORGANIC DIHYDROXYL COMPOUND.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |