Patent US2542294A successfully refreshed from Google Patents.
Patent US3713962A successfully refreshed from Google Patents.
US3713962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite mat structure
Assignee: PPG Industries Inc
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Filing: 1970-03-25
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Granted: 1973-01-30
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Expires: 1990-03-25
Abstract
Abstract Fibrous mats comprised of unstranded filaments that are free to move relative to each other and fibrous mats comprised of fibrous strands that are free to move relative to each other, as well as combinations thereof, are impregnated with resin and subsequently molded into resinous products.
Inventors
- 👤 R Ackley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:53
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B32B5/02; B32B5/022; B32B5/06; D; D04; D04H; D04H1/00; B29K; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/0854; B29K2309/00; B29K2309/08; B32B2262/00; B32B2262/10; B32B2262/101; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T442/00; Y10T442/60; Y10T442/659; Y10T442/666; Y10T442/667
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
67 words
An improved composite mat structure for use in reinforced stampable resinous articles which have a substantially uniformly distributed reinforcement material throughout the entire extent thereof comprising a layer of mat of needled fibrous strands free of chemical binder and a layer of mat of unstranded filaments free of chemical binder and in which composite mat structure said unstranded filaments are free to move relative to each other.
Claim 2
Dependent Claim
67 words
An improved composite mat structure for use in reinforced stampable resinous articles which have a substantially uniformly distributed reinforcement material throughout the entire extent thereof comprising a layer of mat of needled fibrous strands free of chemical binder and a layer of mat of unstranded filaments free of chemical binder and in which composite mat structure said unstranded filaments are free to move relative to each other.
Claim 3
Dependent Claim
74 words
An improved composite mat structure for use in reinforced stampable resinous articles which have a substantially uniformly distributed reinforcement material throughout the entire extent thereof comprising a layer of a mat of needled fibrous strands free of chemical binder, and a layer of a mat of needled unstranded filaments free of chemical binder, said needled fibrous strands and said needled unstranded filaments being free to move relative to each other in their respective mats.
Claim 4
Dependent Claim
74 words
An improved composite mat structure for use in reinforced stampable resinous articles which have a substantially uniformly distributed reinforcement material throughout the entire extent thereof comprising a layer of a mat of needled fibrous strands free of chemical binder, and a layer of a mat of needled unstranded filaments free of chemical binder, said needled fibrous strands and said needled unstranded filaments being free to move relative to each other in their respective mats.
Claim 5
Dependent Claim
21 words
The fibrous structure of claim 2 wherein said fibrous strands and said unstranded filaments are randomly oriented in their respective mats.
Claim 6
Dependent Claim
22 words
The fibrous structure of claim 3 wherein said mat of fibrous strands and said mat of unstranded filaments are comprised of glass.
Claim 7
Dependent Claim
70 words
An improved composite mat structure for use in reinforced stampable resinous articles which have a substantially uniformly distributed reinforcement material throughout the entire extent thereof comprising a layer of a mat of needled, lengthwise and widthwise, uniformly distributed, randomly oriented, continuous glass fibrous strands, and a layer of a mat of unstranded glass filaments free of chemical binder, said unstranded glass filaments being free to move relative to one another.
Claim 8
Dependent Claim
70 words
An improved composite mat structure for use in reinforced stampable resinous articles which have a substantially uniformly distributed reinforcement material throughout the entire extent thereof comprising a layer of a mat of needled, lengthwise and widthwise, uniformly distributed, randomly oriented, continuous glass fibrous strands, and a layer of a mat of unstranded glass filaments free of chemical binder, said unstranded glass filaments being free to move relative to one another.
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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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |