Patent US2723209A successfully refreshed from Google Patents.
US2723209A
Expired / Lapsed
US
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Process of forming a mat of glass fibers and article produced thereby
Assignee: Owens Corning
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Filing: 1951-09-18
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Granted: 1955-11-08
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Expires: 1971-09-18
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Philipps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:41
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/64; D04H1/587; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
THE METHOD OF MANUFACTURING A POROUS BONDED MAT OF GLASS FIBERS COMPRISING THE STEPS OF IMPREGNATING A POROUS LAYER OF GLASS FIBERS WITH A LATEX OF A BUTADIENE-ACRYLONITRILE COPOLYMER IN COMBINATION WITH A PHENOLIC RESIN FORMED OF PHENOL AND ANOTHER PHENOLIC COMPONENT SELECTED FROM THE GROUP CONSISTING OF POLYHYDRIC PHENOLS AND CRESOLS REACTED TOGETHER WITH FORMALDEHYDE TO AN INTERMEDIATE WATER PHENOLIC RESIN PRESENT IN THE RATIO OF ONE PART BY WEIGHT PHENOLIC RESIN TO 1-3 PARTS BY WEIGHT BUTADIENE-ACRYLONITRILE COPOLYMER, AND HEATING THE IMPREGNATED MAT AT A TEMPEATURE WITHIN THE RANGE OF 250-450* F. DURING WHICH THE MAJOR PORTION OF THE BINDER COMPOSITION MIGRATES TO THE GLASS FIBER INTERSECTIONS AND IS ADVANCED TO A HOMOGENEOUS CURED BINDER.
Claim 2
Independent Claim
117 words
THE METHOD OF MANUFACTURING A POROUS BONDED MAT OF GLASS FIBERS COMPRISING THE STEPS OF IMPREGNATING A POROUS LAYER OF GLASS FIBERS WITH A LATEX OF A BUTADIENE-ACRYLONITRILE COPOLYMER IN COMBINATION WITH A PHENOLIC RESIN FORMED OF PHENOL AND ANOTHER PHENOLIC COMPONENT SELECTED FROM THE GROUP CONSISTING OF POLYHYDRIC PHENOLS AND CRESOLS REACTED TOGETHER WITH FORMALDEHYDE TO AN INTERMEDIATE WATER PHENOLIC RESIN PRESENT IN THE RATIO OF ONE PART BY WEIGHT PHENOLIC RESIN TO 1-3 PARTS BY WEIGHT BUTADIENE-ACRYLONITRILE COPOLYMER, AND HEATING THE IMPREGNATED MAT AT A TEMPEATURE WITHIN THE RANGE OF 250-450* F. DURING WHICH THE MAJOR PORTION OF THE BINDER COMPOSITION MIGRATES TO THE GLASS FIBER INTERSECTIONS AND IS ADVANCED TO A HOMOGENEOUS CURED BINDER.
References Cited (Backward Citations)
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US2459739A
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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) | 1958-11-07 | 1959-05-09 | 1959-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-07 | 1963-05-09 | 1963-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-07 | 1967-05-09 | 1967-11-08 | $7700.00 | Window Closed / Lapsed |