Patent US3694299A successfully refreshed from Google Patents.
US3694299A
Expired / Lapsed
US
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Multiple glazed unit and method of manufacture
Assignee: PPG Industries Inc
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Filing: 1971-05-27
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Granted: 1972-09-26
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Expires: 1991-05-27
Abstract
Abstract A MULTIPLE GLAZED UNIT COMPRISING A PAIR OF SPACED GLASS SHEETS IS FORMED BY DEPOSITING A METAL OXIDE ON THE INTERFACIAL SURFACE OF AT LEAST ONE OF THE GLASS SHEETS, AND THEN FUSING THE EDGE PORTIONS OF THE SHEETS TOGETHER. THE METAL OXIDE FILM HAS A WATER-WETTING SURFACE CONTACT ANGLE OF FROM ABOUT 40* TO ABOUT 90*. THE METAL OXIDE FILM CAN ALSO BE PRODUCED BY DEPOSITING AN ORGANO-METALLIC FILM FORMING MATERIAL ON THE INTERFACIAL SURFACE AND THEN HEATING THE ORGANO-METALLIC MATERIAL TO A TEMPERATURE SUFFICIENT TO PRODUCE THE METAL OXIDE FILM.
Inventors
- 👤 William E Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:48
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/20; C03B23/24; C03B23/245; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/25; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/212; C03C2217/229; C03C2218/00; C03C2218/10; C03C2218/11; C03C2218/112
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) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |