Patent EP0574148A1 successfully refreshed from Google Patents.
US4434255A
Expired / Lapsed
US
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Method of utilizing glass fibers in composite gasket structures
Assignee: Owens Corning
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Filing: 1982-04-21
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Granted: 1984-02-28
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Expires: 2002-04-21
Abstract
Abstract A method of producing sheet material consisting of clay, glass fibers and a latex resin and the product produced thereby.
Inventors
- 👤 Clarence W. Charon
- 👤 Kenneth E. Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:02
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/102
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A method of producing a sheet material consisting of clay, glass fibers and a latex resin which comprises: a. forming a slurry of particulate clay, a latex resin and a surfactant; b. adjusting the pH of said slurry to form a second slurry and to encapsulate the clay in the resin and in an outer film of the surfactant; c. adding glass fibers to the second slurry to form a third slurry; and, d. pressing said third slurry to force said clay through said latex and said film of surfactant to produce a cohesive sheet.
Claim 2
Independent Claim
95 words
A method of producing a sheet material consisting of clay, glass fibers and a latex resin which comprises: a. forming a slurry of particulate clay, a latex resin and a surfactant; b. adjusting the pH of said slurry to form a second slurry and to encapsulate the clay in the resin and in an outer film of the surfactant; c. adding glass fibers to the second slurry to form a third slurry; and, d. pressing said third slurry to force said clay through said latex and said film of surfactant to produce a cohesive sheet.
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) | 1987-02-27 | 1987-08-29 | 1988-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-27 | 1991-08-29 | 1992-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-27 | 1995-08-29 | 1996-02-28 | $7700.00 | Window Closed / Lapsed |