Patent US3125404A successfully refreshed from Google Patents.
US3125404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tensile strength
Assignee: —
•
Filing: —
•
Granted: 1964-03-17
•
Expires: 1981-03-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:54
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/4209; D02; D02G; D02G3/00; D02G3/02; D02G3/16; D02G3/18; D02G3/44; D02G3/443; D04H1/4282; D04H1/43; D04H1/44; D04H1/46; D04H1/50; Y; Y10; Y10S; Y10S8/00; Y10S8/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A HEAT-TREATED SUBSTANTIALLY FIRE-PROOF FABRIC WOVEN FROM YARN COMPRISING AN INTIMATE FIBER BLEND CONSISTING ESSENTIALLY OF STAPLE, INORGANIC, SILICEOUS CERAMIC FIBERS CONTAINING A MAJOR JPROPORTION OF ALUMINUM SILICATE, AND SUBSTANTIALLY NON-FLAMMABLE, HEAT-RESISTANT, STAPLE, ACRYLIC CARRIER FIBERS CONTAINING AT LEAST ABOUT 85% BY WEIGHT OF POLYACRYLONITRILE AND UP TO ABOUT 15% BY WEIGHT OF A MONOETHYLENICALLY UNSATURATED MONOMER AND HAVING A SOFTENING POINT ABOVE ABOUT 320*F. PRIOR TO HEAT TREATMENT, SAID CERAMIC FIBERS COMPRISING ABOUT 80% BY WEIGHT OF SAID BLEND, SAID FABRIC HAVING BEEN SUBJECTED TO A NONCOMBUSTIVE HEAT TREATMENT AT A SUBSTANTIALLY UNIFORM TEMPERATURE IN THE RANGE FROM ABOUT 482*F. TO ABOUT 484*F. FOR A PERIOD OF TIME OF ABOUT 3 HOURS AND SUFFICIENT TO CONVERT SAID CARRIER FIBERS TO SAID SUBSTANTIALLY NON-FLAMMABLE, HEAT-RESISTANT FORM, AND SAID PRODUCT HAVING AFTER SAID HEAT TREATMENT A SHRINKAGE REPRESENTING A TOTAL LOSS IN AREA OF ONLY ABOUT 3%.
Claim 2
Dependent Claim
146 words
A HEAT-TREATED SUBSTANTIALLY FIRE-PROOF FABRIC WOVEN FROM YARN COMPRISING AN INTIMATE FIBER BLEND CONSISTING ESSENTIALLY OF STAPLE, INORGANIC, SILICEOUS CERAMIC FIBERS CONTAINING A MAJOR JPROPORTION OF ALUMINUM SILICATE, AND SUBSTANTIALLY NON-FLAMMABLE, HEAT-RESISTANT, STAPLE, ACRYLIC CARRIER FIBERS CONTAINING AT LEAST ABOUT 85% BY WEIGHT OF POLYACRYLONITRILE AND UP TO ABOUT 15% BY WEIGHT OF A MONOETHYLENICALLY UNSATURATED MONOMER AND HAVING A SOFTENING POINT ABOVE ABOUT 320*F. PRIOR TO HEAT TREATMENT, SAID CERAMIC FIBERS COMPRISING ABOUT 80% BY WEIGHT OF SAID BLEND, SAID FABRIC HAVING BEEN SUBJECTED TO A NONCOMBUSTIVE HEAT TREATMENT AT A SUBSTANTIALLY UNIFORM TEMPERATURE IN THE RANGE FROM ABOUT 482*F. TO ABOUT 484*F. FOR A PERIOD OF TIME OF ABOUT 3 HOURS AND SUFFICIENT TO CONVERT SAID CARRIER FIBERS TO SAID SUBSTANTIALLY NON-FLAMMABLE, HEAT-RESISTANT FORM, AND SAID PRODUCT HAVING AFTER SAID HEAT TREATMENT A SHRINKAGE REPRESENTING A TOTAL LOSS IN AREA OF ONLY ABOUT 3%.
References Cited (Backward Citations)
US2132702A
Cited
US2266907A
Cited
US2306781A
Cited
US2401389A
Cited
US2448782A
Cited
US2485230A
Cited
US2557834A
Cited
US2643437A
Cited
US2775022A
Cited
US2799915A
Cited
US2913802A
Cited
US2805464A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-17 | 1967-09-16 | 1968-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-17 | 1971-09-16 | 1972-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-17 | 1975-09-16 | 1976-03-17 | $7700.00 | Window Closed / Lapsed |