US3428518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filamentary reinforcement for laminated articles and related methods
Assignee: Freeman Chemical Corp
•
Filing: 1963-01-24
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Granted: 1969-02-18
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Expires: 1983-01-24
Abstract
No abstract record available.
Inventors
- 👤 Kenneth A Schafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:12
CPC Classifications
B; B29; B29B; B29B15/00; B29B15/08; B29B15/10; B29B15/12; B29B15/122; B29B15/125; B29C; B29C41/00; B29C41/02; B29C41/08; B29C70/00; B29C70/04; B29C70/28; B29C70/30; B29C70/34; B29C70/345; C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; C08; C08F; C08F283/00; C08F283/01; C08L; C08L63/00; C08L63/10; C08L67/00; C08L67/06; B29K; B29K2101/00; B29K2101/10; B29K2105/00; B29K2105/06; B29K2105/12; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/2964; Y10T428/31504; Y10T428/31551; Y10T428/31616
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
FIBROUS ROVING COMPRISING DISCRETE FIBERS EACH COATED WITH A DRY, THERMOSETTING RESINOUS MIXTURE COMPRISING: (A) AN UNSATURATED POLYESTER RESIN HAVING ALPHA-BETA EHTYLENIC UNSATURATION; AND (B) A POLYMERIZABLE DIESTER POLYETHER RESIN HAVING THE FORMULA CH2=C(-R)-COO-CH2-CH(-OH)-CH2-O-((1,4-PHENYLENE)-C(-CH3)2(1,4-PHENYLENE)-O -CH2-CH(-OH)-CH2-O)N-(1,4-PHENYLENE)C(-CH3)2-(1,4-PHENYLENE)-O-CH2-CH(-OH) -CH2-OOC-C(-R)=CH2 WHEREIN R IS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN, LOWER ALIPHATIC HYDROCARBON RADICALS AND PHENYL RADICALS; AND N IS AN INTEGER FROM ZERO TO TWELVE.
Claim 2
Dependent Claim
62 words
FIBROUS ROVING COMPRISING DISCRETE FIBERS EACH COATED WITH A DRY, THERMOSETTING RESINOUS MIXTURE COMPRISING: (A) AN UNSATURATED POLYESTER RESIN HAVING ALPHA-BETA EHTYLENIC UNSATURATION; AND (B) A POLYMERIZABLE DIESTER POLYETHER RESIN HAVING THE FORMULA CH2=C(-R)-COO-CH2-CH(-OH)-CH2-O-((1,4-PHENYLENE)-C(-CH3)2(1,4-PHENYLENE)-O -CH2-CH(-OH)-CH2-O)N-(1,4-PHENYLENE)C(-CH3)2-(1,4-PHENYLENE)-O-CH2-CH(-OH) -CH2-OOC-C(-R)=CH2 WHEREIN R IS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN, LOWER ALIPHATIC HYDROCARBON RADICALS AND PHENYL RADICALS; AND N IS AN INTEGER FROM ZERO TO TWELVE.
References Cited (Backward Citations)
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US3030247A
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US3276945A
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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) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |