US3252829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing transparent electrically conducting glass sheets and article resulting therefrom
Assignee: Libbey Owens Ford Glass Co
•
Filing: 1962-05-15
•
Granted: 1966-05-24
•
Expires: 1982-05-15
Abstract
No abstract record available.
Inventors
- 👤 Joseph L Romstadt
- 👤 Richard A Vascik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:51
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/36; C03C17/3602; C03C17/361; C03C17/3642; C03C17/3655; C03C17/3668; C03C17/3673; H; H01; H01B; H01B1/00; C03C2217/00; C03C2217/90; C03C2217/94; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24752
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A METHOD OF PRODUCING TRANSPARENT ELECTRICALLY CONDUCTING GLASS SHEETS, COMPRISING APPLYING A FIRST LAYER OF A FUSIBLE ELECTROCONDUCTIVE METAL-CONTAINING GLASS FLUX ALONG AT LEAST ONE MARGINAL PORTION OF OEN SURFACE OF A GLASS SHEET, SAID FLUX HAVING A FUSING TEMPERATURE WHICH IS LOWER THAN THE SOFTENING TEMPERATURE OF THE GLASS SHEET, HEATING SAID SHEET TO A TEMPERATURE APPROACHING THE SOFTENING TEMPERATURE OF THE GLASS TO FUSE SAID FIRST FLUX LAYER TO THE GLASS, APPLYING AN ELECRICALLY CONDUCTING METAL OXIDE FILM-FORMING MATERIAL TO SAID ONE SURFACE OF THE HEATED GLASS SHEET TO FILM SAME, APPLYING A SECOND LAYER OF A FUSIBLE ELECTROCONDUCTIVE METAL-CONTAINING GLASS FLUX OVER AT LEAST A PORTION OF SAID FIRST FLUX LAYER AND THE INTERFACE THEREOF WITH SAID ELECTRICALLY CONDUCTING FILM, THE FUSING TEMPERATURE OF SAID SECOND FLUX LAYER ALSO BEING LOWER THAN THE SOFTENING TEMPERATURE OF THE GLASS SHEET, AND THEN REHEATING THE FILMED SHEET TO A TEMPERATURE APPROACHING THE SOFTENING TEMPERATURE OF THE GLASS TO FUSE SAID SECOND FLUX LAYER IN PLACE.
Claim 2
Independent Claim
166 words
A METHOD OF PRODUCING TRANSPARENT ELECTRICALLY CONDUCTING GLASS SHEETS, COMPRISING APPLYING A FIRST LAYER OF A FUSIBLE ELECTROCONDUCTIVE METAL-CONTAINING GLASS FLUX ALONG AT LEAST ONE MARGINAL PORTION OF OEN SURFACE OF A GLASS SHEET, SAID FLUX HAVING A FUSING TEMPERATURE WHICH IS LOWER THAN THE SOFTENING TEMPERATURE OF THE GLASS SHEET, HEATING SAID SHEET TO A TEMPERATURE APPROACHING THE SOFTENING TEMPERATURE OF THE GLASS TO FUSE SAID FIRST FLUX LAYER TO THE GLASS, APPLYING AN ELECRICALLY CONDUCTING METAL OXIDE FILM-FORMING MATERIAL TO SAID ONE SURFACE OF THE HEATED GLASS SHEET TO FILM SAME, APPLYING A SECOND LAYER OF A FUSIBLE ELECTROCONDUCTIVE METAL-CONTAINING GLASS FLUX OVER AT LEAST A PORTION OF SAID FIRST FLUX LAYER AND THE INTERFACE THEREOF WITH SAID ELECTRICALLY CONDUCTING FILM, THE FUSING TEMPERATURE OF SAID SECOND FLUX LAYER ALSO BEING LOWER THAN THE SOFTENING TEMPERATURE OF THE GLASS SHEET, AND THEN REHEATING THE FILMED SHEET TO A TEMPERATURE APPROACHING THE SOFTENING TEMPERATURE OF THE GLASS TO FUSE SAID SECOND FLUX LAYER IN PLACE.
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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) | 1969-05-23 | 1969-11-22 | 1970-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-23 | 1973-11-22 | 1974-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-23 | 1977-11-22 | 1978-05-24 | $7700.00 | Window Closed / Lapsed |