US3004863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for increasing the scratch resistance of glass
Assignee: EIDP Inc
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Filing: 1960-10-04
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Granted: 1961-10-17
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Expires: 1980-10-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles Louis Gray
- 👤 Dettrc Robert Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:43
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/25; C03C17/256; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/212; C03C2218/00; C03C2218/10; C03C2218/11; C03C2218/111; C03C2218/112
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN A PROCESS FOR INCREASING THE SCRATCH RESISTANCE OF A GLASS BODY, THE STEPS CONSISTING OF APPLYING TO THE SURFACE OF SAID BODY AN ACID AQUEOUS SOLUTION OF AN ORGANIC TITANATE, SAID SOLUTION HAVING A PH VALUE BETWEEN 2 AND 5, ALLOWING THE EXCESS MOISTURE TO DRAIN, AND SUBJECTING THE TREATED GLASS TO HEATING AT A TEMPERATURE SUFFICIENT TO ANNEAL GLASS BUT BELOW THAT AT WHICH PERCEPITIBLE DEFORMATION OF THE SHAPE OF THE GLASS BODY STEPS IN, SAID ORGANIC TITANATE BEING AN ESTER COMPOSITION DEFINED BY THE FORMULA
Claim 2
Dependent Claim
88 words
IN A PROCESS FOR INCREASING THE SCRATCH RESISTANCE OF A GLASS BODY, THE STEPS CONSISTING OF APPLYING TO THE SURFACE OF SAID BODY AN ACID AQUEOUS SOLUTION OF AN ORGANIC TITANATE, SAID SOLUTION HAVING A PH VALUE BETWEEN 2 AND 5, ALLOWING THE EXCESS MOISTURE TO DRAIN, AND SUBJECTING THE TREATED GLASS TO HEATING AT A TEMPERATURE SUFFICIENT TO ANNEAL GLASS BUT BELOW THAT AT WHICH PERCEPITIBLE DEFORMATION OF THE SHAPE OF THE GLASS BODY STEPS IN, SAID ORGANIC TITANATE BEING AN ESTER COMPOSITION DEFINED BY THE FORMULA
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) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |