Patent US2931739A successfully refreshed from Google Patents.
US2931739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastics and laminates formed of glass fibers and epoxy resins
Assignee: Owens Corning
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Filing: 1956-10-08
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Granted: 1960-04-05
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Expires: 1976-10-08
Abstract
No abstract record available.
Inventors
- 👤 Marzocchi Alfred
- 👤 Nicholas S Janetos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:32
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J5/08; B; B32; B32B; B32B27/00; C08J2363/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2962; Y10T428/31504; Y10T428/31511; Y10T428/31525; Y10T428/31786
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A LAMINATE AND PLASTIC FORMED OF THE SYSTEM CONSISTING OF AN EPOXY RESIN AS THE ADHESIVE PHASE, GLASS FIBERS AS A REINFORCEMENT AND A COATING ON THE GLASS FIBER SURFACES TO IMPROVE THE PROCESSING CHARACTERISTICS OF THE GLASS FIBERS AND TO IMPROVE THE BONDING RELATIONSHIP BETWEEN THE EPOXY RESINS AND THE GLASS FIBER SURFACES COMPRISING THE COMBINATION OF A SATURATED POLYESTER RESIN, A POLYVINYL ALCOHOL, A GLASS FIBER LUBRICANT-EMULSIFIER, AN ORGANOSILICON COMPOUND AND POLYVINYLPYRROLIDONE IN WHICH THE MATERIALS ARE PRESENT IN THE RATION OF 2.0 TO 5.0 PARTS BY WEIGHT SATURATED POLYESTER RESIN, 0.1 TO 2.0 PARTS
Claim 2
Dependent Claim
97 words
A LAMINATE AND PLASTIC FORMED OF THE SYSTEM CONSISTING OF AN EPOXY RESIN AS THE ADHESIVE PHASE, GLASS FIBERS AS A REINFORCEMENT AND A COATING ON THE GLASS FIBER SURFACES TO IMPROVE THE PROCESSING CHARACTERISTICS OF THE GLASS FIBERS AND TO IMPROVE THE BONDING RELATIONSHIP BETWEEN THE EPOXY RESINS AND THE GLASS FIBER SURFACES COMPRISING THE COMBINATION OF A SATURATED POLYESTER RESIN, A POLYVINYL ALCOHOL, A GLASS FIBER LUBRICANT-EMULSIFIER, AN ORGANOSILICON COMPOUND AND POLYVINYLPYRROLIDONE IN WHICH THE MATERIALS ARE PRESENT IN THE RATION OF 2.0 TO 5.0 PARTS BY WEIGHT SATURATED POLYESTER RESIN, 0.1 TO 2.0 PARTS
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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) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |