US2831780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for improving the scratch resistance and strength of glass articles
Assignee: EIDP Inc
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Filing: 1955-04-21
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Granted: 1958-04-22
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Expires: 1975-04-21
Abstract
No abstract record available.
Inventors
- 👤 Alden J Deyrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:58
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/245; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/212; C03C2217/214; C03C2217/22; C03C2218/00; C03C2218/10; C03C2218/15; C03C2218/152; Y; Y10; Y10S; Y10S65/00; Y10S65/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A METHOD FOR INCREASING THE STARCH RESISTENCE OF A GLASS SURFACE COMPRISING TREATING SAID SURFACE WHILE AT A TEMPERATURE BETWEEN THE STRAIN TEMPERATURE AND THE DEFORMING TEMPERATURE OF THE GLASS WITH THE VAPOR OF A METALLO-ORGANIC ESTER SELECTED FROM THE GROUP CONSISTING OF ALKYL TITANATES, ALKYL ZIRONATES, ALKYL ALUMINATES, AND MIXTURES THEREOF WHICH PYROLYYZES TO FORM A METAL OXIDE COATING ON THE GLASS SURFACE.
Claim 2
Independent Claim
64 words
A METHOD FOR INCREASING THE STARCH RESISTENCE OF A GLASS SURFACE COMPRISING TREATING SAID SURFACE WHILE AT A TEMPERATURE BETWEEN THE STRAIN TEMPERATURE AND THE DEFORMING TEMPERATURE OF THE GLASS WITH THE VAPOR OF A METALLO-ORGANIC ESTER SELECTED FROM THE GROUP CONSISTING OF ALKYL TITANATES, ALKYL ZIRONATES, ALKYL ALUMINATES, AND MIXTURES THEREOF WHICH PYROLYYZES TO FORM A METAL OXIDE COATING ON THE GLASS SURFACE.
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) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |