Patent US2772995A successfully refreshed from Google Patents.
US2772995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leather replacement compositions and process
Assignee: EIDP Inc
•
Filing: 1954-05-07
•
Granted: 1956-12-04
•
Expires: 1974-05-07
Abstract
No abstract record available.
Inventors
- 👤 Ii Joseph Durant Cooper Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:06
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; B; B32; B32B; B32B27/00; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/249953; Y10T428/249962; Y10T442/00; Y10T442/60; Y10T442/601; Y10T442/674
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
THE PROCESS OF FORMING NON-WOVEN, POROUS LEATHER REPLACEMENT FABRICS WHICH COMPRISES ASSOCIATING SUBSTANTIALLY WATER VAPOR-IMPERMEABLE, RELATIVELY EXTENSIBLE, INITIALLY THERMOPLASTIC, ELASTOMERIC, POLYMERIC BINDER MATERIAL WITH A FIBROUS SHEET COMPRISING ESSENTIALLY A NONWOVEN BASE STRATUM OF UNIFORMLY DISPERSED STRUCTURAL FIBERS OF RELATIVELY NON-EXTENDIBLE MATERIAL, AND A NONWOVEN SURFACE STRATUM OF UNIFORMLY DISPERSED SOLUBLE PORE-FORMING FIBERS AND FREE OF STRUCTURAL FIBERS TO FORM AN INITIAL SHEET, SAID PORE-FORMING FIBERS BEING SOLUBLE IN A SOLVENT WHICH IS A NON-SOLVENT FOR THE STRUCTURAL FIBERS, SAID BINDER MATERIAL HAVING A SOFTENING TEMPERATURE BELOW THE SOFTENING TEMPERATURE OF SAID FIBERS; HOT-PRESSING SAID INITIAL SHEET AT A TEMPERATURE ABOVE THE SOFTENING TEMPERATURE OF SAID BINDER AND BELOW THE SOFTENING TEMPERA-
Claim 2
Dependent Claim
112 words
THE PROCESS OF FORMING NON-WOVEN, POROUS LEATHER REPLACEMENT FABRICS WHICH COMPRISES ASSOCIATING SUBSTANTIALLY WATER VAPOR-IMPERMEABLE, RELATIVELY EXTENSIBLE, INITIALLY THERMOPLASTIC, ELASTOMERIC, POLYMERIC BINDER MATERIAL WITH A FIBROUS SHEET COMPRISING ESSENTIALLY A NONWOVEN BASE STRATUM OF UNIFORMLY DISPERSED STRUCTURAL FIBERS OF RELATIVELY NON-EXTENDIBLE MATERIAL, AND A NONWOVEN SURFACE STRATUM OF UNIFORMLY DISPERSED SOLUBLE PORE-FORMING FIBERS AND FREE OF STRUCTURAL FIBERS TO FORM AN INITIAL SHEET, SAID PORE-FORMING FIBERS BEING SOLUBLE IN A SOLVENT WHICH IS A NON-SOLVENT FOR THE STRUCTURAL FIBERS, SAID BINDER MATERIAL HAVING A SOFTENING TEMPERATURE BELOW THE SOFTENING TEMPERATURE OF SAID FIBERS; HOT-PRESSING SAID INITIAL SHEET AT A TEMPERATURE ABOVE THE SOFTENING TEMPERATURE OF SAID BINDER AND BELOW THE SOFTENING TEMPERA-
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) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |