US2919172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coloring woven glass fibers
Assignee: GAF Chemicals Corp
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Filing: 1952-11-20
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Granted: 1959-12-29
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Expires: 1972-11-20
Abstract
No abstract record available.
Inventors
- 👤 Charles L Lawsberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:11
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/465; C03C25/475
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
THE PROCESS OF COLORING WOVEN GLASS FABRIC WHICH CONSISTS TREATING SAID FABRIC WITH AN AQUEOUS SOLUTION CONSISTING OF A HYDROXIDE SELECTED FROM THE CLASS CONSISTING OF AMMONIUM AND ALKALI METAL HYDROXIDES AND A LOW MOLECULAR WEIGHT, WATER-SOLUBLE, COMPOUND CONTAINING AN ACID RADICAL SELECTED FROM THE GROUP CONSISTING OF ACETATE, BORATE, BROMATE, BROMIDE, CARBONATE, CHLORIDE, FORMATE, OXALATE, PHODPHATE, PROPIONATE AND SULFATE, AT A TEMPERATURE IN THE RANGE OF 75* C. TO THE BOILING POINT, SAID SOLUTION HAVING A PH IN THE RANGE OF 9 TO 13 AND THEN TREATING SAID FABRIC WITH A DYESTUFF NOT REQUIRING A CHEMICAL REDUCTION FOR APPLICATION.
Claim 2
Dependent Claim
100 words
THE PROCESS OF COLORING WOVEN GLASS FABRIC WHICH CONSISTS TREATING SAID FABRIC WITH AN AQUEOUS SOLUTION CONSISTING OF A HYDROXIDE SELECTED FROM THE CLASS CONSISTING OF AMMONIUM AND ALKALI METAL HYDROXIDES AND A LOW MOLECULAR WEIGHT, WATER-SOLUBLE, COMPOUND CONTAINING AN ACID RADICAL SELECTED FROM THE GROUP CONSISTING OF ACETATE, BORATE, BROMATE, BROMIDE, CARBONATE, CHLORIDE, FORMATE, OXALATE, PHODPHATE, PROPIONATE AND SULFATE, AT A TEMPERATURE IN THE RANGE OF 75* C. TO THE BOILING POINT, SAID SOLUTION HAVING A PH IN THE RANGE OF 9 TO 13 AND THEN TREATING SAID FABRIC WITH A DYESTUFF NOT REQUIRING A CHEMICAL REDUCTION FOR APPLICATION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |