US3577256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scratch and abrasion resistant coatings for glass
Assignee: OI Glass Inc
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Filing: 1969-06-26
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Granted: 1971-05-04
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Expires: 1989-06-26
Abstract
Abstract FRESHLY FORMED GLASS TUBING IS PROVIDED WITH A WATER SOLUBLE, SCRATCH AND ABRASION RESISTANT COATING WHICH MAY ALSO BE REMOVED BY VOLATILIZATION AT ANNEALING TEMPERATURES. THE COATING IS APPLIED AS AN AQUEOUS SOLUTION CONTAINING 0.5% TO 2% OF AN ACRYLIC SOLUTION RESIN, 0.75% TO 1.5% POLYOXYETHYLENE GLYCOL AND 0.075% TO 0.25% MELAMINE-FORMALDEHYDE SOLUTION RESIN. THE SOLUTION MAY ALSO INCLUDE 0.025% TO 0.05% POLYVINYL ALCOHOL.
Inventors
- 👤 Charles L Benford Jr Ja Mielke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:47
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/28; C03C17/32; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1317; Y10T428/1321
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |