Patent US3249412A successfully refreshed from Google Patents.
US3249412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of sizing glass fibers and epoxy resin emulsion therefor
Assignee: PPG Industries Inc
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Filing: 1963-03-21
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Granted: 1966-05-03
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Expires: 1983-03-21
Abstract
No abstract record available.
Inventors
- 👤 Robert L Kolek
- 👤 George E Eilerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:48
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/402; D06M13/405; C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5046; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3442; C08K5/3445; D06M13/35
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
39 words
A STABLE AQUEOUS EMULSION OF AN EPOXY RESIN, SAID EMULSION CONTAINING FROM ABOUT 5 TO ABOUT 15 PERCENT BY WEIGHT OF THE EPOXY RESIN OF A CATIONIC EMULSIFYING AGENT SELECTED FROM THE GROUP CONSISTING OF IMIDAZOLINES HAVING THE FORMULA
Claim 2
Dependent Claim
39 words
A STABLE AQUEOUS EMULSION OF AN EPOXY RESIN, SAID EMULSION CONTAINING FROM ABOUT 5 TO ABOUT 15 PERCENT BY WEIGHT OF THE EPOXY RESIN OF A CATIONIC EMULSIFYING AGENT SELECTED FROM THE GROUP CONSISTING OF IMIDAZOLINES HAVING THE FORMULA
Claim 3
Dependent Claim
165 words
IN THE METHOD OF FORMING A GLASS FIBER STRAND WHICH CAN BE FABIRCATED AND LAMINATED WITH A RESIN WHICH COMPRISES DRAWING GLASS STREAMS THROUGH ORIFICES IN A BUSHING TO FORM INDIVIDUAL GLASS FILAMENTS, MOVING THE FILAMENTS AWAY FROM THE BUSHING AT A HIGH RATE OF SPEED AND FORMING THEM INTO A STRAND, APPLYING TO THE FILAMENTS WHILE THEY ARE MOVING AT THIS SPEED AN AQUEOUS SIZING COMPOSITION AND DRYING THE GLASS FIBERS SO TREATED, THE IMPROVEMENT WHICH COMPRISES USING AN AQUEOUS SIZING COMPOSITION CONSISTING ESSENTIALLY OF FROM ABOUT 1 TO ABOUT 5 PERCENT BY WEIGHTOF SAID AQUEOUS SIZING COMPOSITION OF AN EPOXY RESIN, FROM ABOUT 0.3 TO 2.0 PERCENT BY WEIGHT OF SAID AQUEOUS SIZING COMPOSITION OF A COUPLING AGENT, FROM ABOUT 0.1 TO 1 PERCENT BY WEIGHT OF SAID AQUEOUS SIZING COMPOSITION OF A GLASS FIBER LUBRICANT, FROM ABOUT 5 TO ABOUT 15 PERCENT BY WEIGHT OF SAID EPOXY RESIN OF A CATIONIC AGENT SELECTED FROM THE GROUP CONSISTING OF IMIDAZOLINES HAVING THE FORMULA
Claim 4
Dependent Claim
165 words
IN THE METHOD OF FORMING A GLASS FIBER STRAND WHICH CAN BE FABIRCATED AND LAMINATED WITH A RESIN WHICH COMPRISES DRAWING GLASS STREAMS THROUGH ORIFICES IN A BUSHING TO FORM INDIVIDUAL GLASS FILAMENTS, MOVING THE FILAMENTS AWAY FROM THE BUSHING AT A HIGH RATE OF SPEED AND FORMING THEM INTO A STRAND, APPLYING TO THE FILAMENTS WHILE THEY ARE MOVING AT THIS SPEED AN AQUEOUS SIZING COMPOSITION AND DRYING THE GLASS FIBERS SO TREATED, THE IMPROVEMENT WHICH COMPRISES USING AN AQUEOUS SIZING COMPOSITION CONSISTING ESSENTIALLY OF FROM ABOUT 1 TO ABOUT 5 PERCENT BY WEIGHTOF SAID AQUEOUS SIZING COMPOSITION OF AN EPOXY RESIN, FROM ABOUT 0.3 TO 2.0 PERCENT BY WEIGHT OF SAID AQUEOUS SIZING COMPOSITION OF A COUPLING AGENT, FROM ABOUT 0.1 TO 1 PERCENT BY WEIGHT OF SAID AQUEOUS SIZING COMPOSITION OF A GLASS FIBER LUBRICANT, FROM ABOUT 5 TO ABOUT 15 PERCENT BY WEIGHT OF SAID EPOXY RESIN OF A CATIONIC AGENT SELECTED FROM THE GROUP CONSISTING OF IMIDAZOLINES HAVING THE FORMULA
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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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |