Patent US2765247A successfully refreshed from Google Patents.
US2765247A
Expired / Lapsed
US
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Non-woven sheet material
Assignee: EIDP Inc
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Filing: 1953-04-14
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Granted: 1956-10-02
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Expires: 1973-04-14
Abstract
No abstract record available.
Inventors
- 👤 Graham Boynton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:57
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/64; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/26; Y10T428/263; Y10T428/268
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
SHEET MATERIAL COMPRISING, BY WEIGHT 20% TO 85% OF MATTED STRUCTURAL FIBERS OF SYNTHETIC LINEAR CONDENSATION POLYMER BOUND TOGETHER BY 80% TO 15% OF AN EXTENSIBLE POLYMERIC BINDER OF SYNTHETIC ADDITION POLYMER WHICH FLOWS AT LEAST 50* F. BELOW THE DEFORMATION TEMPERATURE OF THE STRUCTURAL FIBERS, FROM 5% TO 50% BY WEIGHT OF SAID STRUCTURAL FIBERS BEING OF FINE SIZE FROM LESS THAN 0.01 UP TO 0.2 DENIER PER FILAMENT AND THE OTHER STRUCTURAL FIBERS BEING OF A COARSE SIZE FROM 1 TO 60 DENIER PER FILAMENT, SAID SHEET HAVING A SURFACE LAYER OF AT LEAST 3 MILS IN THICKNESS WHEREIN THE FIBERS ARE SUBSTANTIALLY ALL OF SAID FINE SIZE AND A BASE LAYER WHEREIN THE FIBERS ARE SUBSTANTIALLY ALL OF SAID COARSE SIZE.
Claim 2
Dependent Claim
124 words
SHEET MATERIAL COMPRISING, BY WEIGHT 20% TO 85% OF MATTED STRUCTURAL FIBERS OF SYNTHETIC LINEAR CONDENSATION POLYMER BOUND TOGETHER BY 80% TO 15% OF AN EXTENSIBLE POLYMERIC BINDER OF SYNTHETIC ADDITION POLYMER WHICH FLOWS AT LEAST 50* F. BELOW THE DEFORMATION TEMPERATURE OF THE STRUCTURAL FIBERS, FROM 5% TO 50% BY WEIGHT OF SAID STRUCTURAL FIBERS BEING OF FINE SIZE FROM LESS THAN 0.01 UP TO 0.2 DENIER PER FILAMENT AND THE OTHER STRUCTURAL FIBERS BEING OF A COARSE SIZE FROM 1 TO 60 DENIER PER FILAMENT, SAID SHEET HAVING A SURFACE LAYER OF AT LEAST 3 MILS IN THICKNESS WHEREIN THE FIBERS ARE SUBSTANTIALLY ALL OF SAID FINE SIZE AND A BASE LAYER WHEREIN THE FIBERS ARE SUBSTANTIALLY ALL OF SAID COARSE SIZE.
References Cited (Backward Citations)
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US2336797A
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US2543101A
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US2482062A
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US2530441A
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US2552114A
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US2626214A
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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) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |