US5571610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass mat thermoplastic product
Assignee: Owens Corning Intellectual Capital LLC
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Filing: 1995-12-15
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Granted: 1996-11-05
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Expires: 2015-12-15
Abstract
Abstract A composite sheet is made of a moldable resin and reinforcement fibers, where the resin is a thermoplastic resin, thermosetting resin or mixture thereof, and the reinforcement fibers are fibers centrifuged from a rotary process fiberizer, where the composite sheet has at least 5 distinct layers of reinforcement fibers per mm of thickness. The composite sheet has at least 10 distinct layers of reinforcement fibers, and preferably at least 30 distinct layers. At least 85 percent of the reinforcement fibers are monofilaments, and the reinforcement fibers are wool glass fibers.
Inventors
- 👤 James E. Loftus
- 👤 Michael T. Pellegrin
- 👤 Patrick L. Ault
- 👤 Randall M. Haines
- 👤 Virgil G. Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:39
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/02; B32B17/04; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29B; B29B15/00; B29B15/08; B29B15/10; B29B15/12; B29C70/28; B29C70/40; B29C70/50; B29C70/504; C; C03; C03B; C03B37/00; C03B37/01; C03B37/04; D; D01; D01D; D01D5/00; D01D5/18; B29K; B29K2105/00; B29K2105/25; B29K2105/253; B29K2105/256; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B2001/7687; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/24994
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
46 words
A composite sheet comprising a moldable resin which consists of thermoplastic resin, thermosetting resin or mixtures thereof, and reinforcement fibers which are fibers centrifuged from a rotary process fiberizer, where the composite sheet has at least 5 distinct layers of reinforcement fibers per mm of thickness.
Claim 2
Dependent Claim
46 words
A composite sheet comprising a moldable resin which consists of thermoplastic resin, thermosetting resin or mixtures thereof, and reinforcement fibers which are fibers centrifuged from a rotary process fiberizer, where the composite sheet has at least 5 distinct layers of reinforcement fibers per mm of thickness.
Claim 3
Dependent Claim
23 words
The composite sheet of claim 1 in which the reinforcement fibers have an average length greater than about 10 cm prior to consolidation.
Claim 4
Dependent Claim
18 words
The composite sheet of claim 1 in which at least 85 percent of the reinforcement fibers are monofilaments.
Claim 5
Dependent Claim
14 words
The composite sheet of claim 1 in which the reinforcement fibers are mineral fibers.
Claim 6
Dependent Claim
16 words
The composite sheet of claim 4 in which the mineral fibers are comprised of wool glass.
Claim 7
Dependent Claim
24 words
The composite sheet of claim 1 in which the composite sheet has at least 7 distinct layers of reinforcement fibers per mm of thickness.
Claim 8
Dependent Claim
20 words
The composite sheet of claim 1 in which the composite sheet has at least 30 distinct layers of reinforcement fibers.
Claim 9
Dependent Claim
42 words
A composite sheet comprising a moldable resin which consists of thermoplastic resin, thermosetting resin or mixtures thereof, and reinforcement fibers which are fibers centrifuged from a rotary process fiberizer, where the composite sheet has at least 30 distinct layers of reinforcement fibers.
Claim 10
Dependent Claim
42 words
A composite sheet comprising a moldable resin which consists of thermoplastic resin, thermosetting resin or mixtures thereof, and reinforcement fibers which are fibers centrifuged from a rotary process fiberizer, where the composite sheet has at least 30 distinct layers of reinforcement fibers.
Claim 11
Dependent Claim
24 words
The composite sheet of claim 8 in which the composite sheet has at least 5 distinct layers of reinforcement fibers per mm of thickness.
Claim 12
Dependent Claim
18 words
The composite sheet of claim 8 in which at least 85 percent of the reinforcement fibers are monofilaments.
Claim 13
Dependent Claim
16 words
The composite sheet of claim 8 in which the mineral fibers are comprised of wool glass.
Claim 14
Dependent Claim
69 words
A composite sheet comprising a moldable resin which consists of thermoplastic resin, thermosetting resin or mixtures thereof, and reinforcement fibers which are mineral fibers centrifuged from a rotary process fiberizer and having an average length greater than about 10 cm, where the composite sheet has at least 3 distinct layers of reinforcement fibers per mm of thickness, and where at least 85 percent of the reinforcement fibers are monofilaments.
Claim 15
Dependent Claim
69 words
A composite sheet comprising a moldable resin which consists of thermoplastic resin, thermosetting resin or mixtures thereof, and reinforcement fibers which are mineral fibers centrifuged from a rotary process fiberizer and having an average length greater than about 10 cm, where the composite sheet has at least 3 distinct layers of reinforcement fibers per mm of thickness, and where at least 85 percent of the reinforcement fibers are monofilaments.
Claim 16
Dependent Claim
16 words
The composite sheet of claim 8 in which the mineral fibers are comprised of wool glass.
Claim 17
Dependent Claim
34 words
The composite sheet of claim 8 in which the resin includes a thermoplastic resin from the group consisting essentially of polyolefins, polyamides, polyesters, polypropylene sulfides, polystyrene, ketones, polyimides, urethanes and asphalt, or combinations thereof.
Claim 18
Dependent Claim
28 words
The composite sheet of claim 8 in which the resin includes a thermoset resin from the group consisting essentially of epoxies, polyesters, phenolics and urethanes, or combinations thereof.
Claim 19
Dependent Claim
26 words
The composite sheet of claim 12 which is capable of flowing during compression molding to the extent of increasing its area by at least 50 percent.
Claim 20
Dependent Claim
35 words
The composite sheet of claim 12 including bundles of additional fibers, which are E glass fibers having lengths greater than about 0.5 cm and containing an average of at least about 50 fibers per bundle.
Claim 21
Dependent Claim
15 words
The composite sheet of claim 12 in combination with a surfacing sheet of thermoplastic material.
Claim 22
Dependent Claim
85 words
A composite sheet comprising a moldable resin which consists of thermoplastic resin, thermosetting resin or mixtures thereof, and reinforcement fibers which are mineral fibers centrifuged from wool glass in a rotary process fiberizer, where the composite sheet has at least 5 distinct layers of reinforcement fibers per mm of thickness, where at least 85 percent of the reinforcement fibers are monofilaments, and where the composite sheet is capable of flowing during compression molding to the extent of increasing its area by at least 50 percent.
Claim 23
Dependent Claim
85 words
A composite sheet comprising a moldable resin which consists of thermoplastic resin, thermosetting resin or mixtures thereof, and reinforcement fibers which are mineral fibers centrifuged from wool glass in a rotary process fiberizer, where the composite sheet has at least 5 distinct layers of reinforcement fibers per mm of thickness, where at least 85 percent of the reinforcement fibers are monofilaments, and where the composite sheet is capable of flowing during compression molding to the extent of increasing its area by at least 50 percent.
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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) | 1999-11-05 | 2000-05-06 | 2000-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-11-05 | 2004-05-06 | 2004-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-11-05 | 2008-05-06 | 2008-11-05 | $7700.00 | Window Closed / Lapsed |