Patent US3261736A successfully refreshed from Google Patents.
US3261736A
Expired / Lapsed
US
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Glass fiber treatment
Assignee: PPG Industries Inc
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Filing: 1962-04-03
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Granted: 1966-07-19
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Expires: 1982-04-03
Abstract
No abstract record available.
Inventors
- 👤 George E Eilerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:33
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; C09; C09J; C09J131/00; C09J131/02; C09J131/04; C08; C08L; C08L2666/00; C08L2666/54
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
137 words
AN AQUEOUS GLASS FIBER SIZING COMPOSITION HAVING ADHESIVE COMPATIBILITY FOR SYNTHETIC RESINS WHICH COMPOSITION CONSISTS ESSENTIALLY OF IN PERCENT BY WEIGHTS OF WATER, 0.3 TO 2 PERCENT LUBRICANT, 2 TO 8 PERCENT SYNTHETIC RESIN LATEX, AND 0.2 TO 1 PERCENT OF AN INORGANIC COUPLING COMPOSITION SELECTED FROM THE GROUP CONSISTING OF: (A) COMPOUNDS HAVING (1) A TRIVALENT METAL ION SELECTED FROM THE GROUP CONSISTING OF CHROMIUM, COBALT, NICKEL, COPPER AND LEAD, (2) AT LEAST ONE HYDROXYL GROUP, AND (3) AT LEAST ONE ANION OF A STRONG MINERAL ACID; (B) COORDINATE ELECTRONIC COMPLEXES OF COMPOUNDS DEFINED AS IN (A); AND (C) MIXTURES OF (A) AND (B), WITH THE PROVISO THAT THE OVERALL BASICITY OF THE COUPLING COMPOSITION IS LESS THAN 50 PERCENT AND WHEREIN THE VISCOSITY OF THE SIZING COMPOSITION IS LESS THAN ABOUT 100 CENTIPOISES AT 20*C.
Claim 2
Dependent Claim
137 words
AN AQUEOUS GLASS FIBER SIZING COMPOSITION HAVING ADHESIVE COMPATIBILITY FOR SYNTHETIC RESINS WHICH COMPOSITION CONSISTS ESSENTIALLY OF IN PERCENT BY WEIGHTS OF WATER, 0.3 TO 2 PERCENT LUBRICANT, 2 TO 8 PERCENT SYNTHETIC RESIN LATEX, AND 0.2 TO 1 PERCENT OF AN INORGANIC COUPLING COMPOSITION SELECTED FROM THE GROUP CONSISTING OF: (A) COMPOUNDS HAVING (1) A TRIVALENT METAL ION SELECTED FROM THE GROUP CONSISTING OF CHROMIUM, COBALT, NICKEL, COPPER AND LEAD, (2) AT LEAST ONE HYDROXYL GROUP, AND (3) AT LEAST ONE ANION OF A STRONG MINERAL ACID; (B) COORDINATE ELECTRONIC COMPLEXES OF COMPOUNDS DEFINED AS IN (A); AND (C) MIXTURES OF (A) AND (B), WITH THE PROVISO THAT THE OVERALL BASICITY OF THE COUPLING COMPOSITION IS LESS THAN 50 PERCENT AND WHEREIN THE VISCOSITY OF THE SIZING COMPOSITION IS LESS THAN ABOUT 100 CENTIPOISES AT 20*C.
Claim 3
Dependent Claim
79 words
IN THE METHOD OF PREPARING A GLASS FIBER REINFORCED RESINOUS LAMINATE WHICH METHOD COMPRISES THE STEPS OF: FORMING GLASS FIBER STRANDS; APPLYING TO THE GLASS FIBER STRANDS A STABLE AQUEOUS SIZING COMPOSITION; DRYING THE TREATED STRANDS; ASSOCIATING THE STRANDS IN SUITABLE FORM FOR RESIN REINFORCEMENT; CONBINING THE STRANDS WITH A RESIN TO PRODUCE A GLASS FIBER REINFORCED RESINOUS LAMINATE; AND CURING THE RESIN; THE IMPROVEMENT WHICH COMPRISES USING AS THE AQUEOUS SIZING COMPOSITION THE COMPOSITION DESCRIBED IN CLAIM 1.
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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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |