Patent US3573950A successfully refreshed from Google Patents.
US3573950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective coating of glass surface
Assignee: Corning Glass Works
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Filing: 1968-09-27
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Granted: 1971-04-06
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Expires: 1988-09-27
Abstract
Abstract A METHOD OF PRESERVING THE WETTABILITY OF A GLASS SURFACE BY TREATING THE GLASS WITH AN AQUEOUS SOLUTION OF GLUCONIC ACID.
Inventors
- 👤 Joseph J Domicone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:51
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/28
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) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |