Patent US3906358A successfully refreshed from Google Patents.
Patent US2824828A successfully refreshed from Google Patents.
US2824828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colored glass fibers and method of producing the same
Assignee: Commonwealth Engineering Company of Ohio
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Filing: 1955-05-12
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Granted: 1958-02-25
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Expires: 1975-05-12
Abstract
No abstract record available.
Inventors
- 👤 Howard J Homer
- 👤 John R Whitacre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:04
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/465; C03C25/475
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
91 words
THE METHOD OF COLORING GLASS FIBERS WHICH COMPRISES CONTACTING HEATED GLASS FIBER SURFACES AT A VACUUM TO AN ATMOSPHERIC PRESSURE WITH A HEAT DECOMPOSABLE ORGANIC SALT OF ALUMINUM HAVING THE GENERAL FORMULA A1(R)3 WHEREIN R IS A RADICAL SELECTED FROM THE GROUP OF LOWER ALIPHATIC AND ARYL RADICALS TO DEPOSIT A COATING OF ALUMINUM ON THE FIBER SURFACES, ANODIZING THE COATING TO FORM ALUMINUM OXIDE, DYEING THE ANODIZED COATING, AND THEN SUBJECTING THE DYED COATING TO A HOT AQUEOUS TREATMENT TO HYDRATE THE ALUMINUM OXIDE, ALL WHILE MAINTAINING THE FIBERS FLEXIBLE.
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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) | 1961-02-24 | 1961-08-26 | 1962-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-24 | 1965-08-26 | 1966-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-24 | 1969-08-26 | 1970-02-25 | $7700.00 | Window Closed / Lapsed |