US2904432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a photograph in glass
Assignee: Corning Glass Works
•
Filing: 1954-09-29
•
Granted: 1959-09-15
•
Expires: 1974-09-29
Abstract
No abstract record available.
Inventors
- 👤 Howard G Ross
- 👤 Frederic W Schuler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:40
CPC Classifications
G; G03; G03F; G03F7/00; C; C03; C03C; C03C21/00; C03C21/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
THE METHOD OF PRODUCING A PERMANENT, TWO-DIMENSIONAL, PHOTOGRAPHIC IMAGE IN GLASS, WHICH COMPRISES FORMING DIRECTLY IN CONTACT WITH A SILICATE GLASS ARTICLE CONTAINING AN ALKALI METAL OXIDE A CONTINUOUS METALLIC FILM OF AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF SILVER AND COPPER IN A PATTERN CORRESPONDING TO THE DESIRED IMAGE, HEATING THE ARTAICLE UNDER OXIDIZING CONDITIONS IN AIR AT A TEMPERATURE AND FOR A TIME SUFFICIENT TO OXIDIZE AND IONIZE THE METAL IMAGE AND TO CAUSE MIGRATION OF THE IONS INTO THE GLASS IN EXCHANGE FOR THE ALKALI METAL IONS THEREIN, AND HEATING THE ARTICLE IN A REDUCING ATMOSPHERE TO REDUCE THE MIGRATED IONS TO METALLIC PARTICLES DISPERSED IN AND COLORING THE SURFACE OF THE GLASS.
Claim 2
Independent Claim
119 words
THE METHOD OF PRODUCING A PERMANENT, TWO-DIMENSIONAL, PHOTOGRAPHIC IMAGE IN GLASS, WHICH COMPRISES FORMING DIRECTLY IN CONTACT WITH A SILICATE GLASS ARTICLE CONTAINING AN ALKALI METAL OXIDE A CONTINUOUS METALLIC FILM OF AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF SILVER AND COPPER IN A PATTERN CORRESPONDING TO THE DESIRED IMAGE, HEATING THE ARTAICLE UNDER OXIDIZING CONDITIONS IN AIR AT A TEMPERATURE AND FOR A TIME SUFFICIENT TO OXIDIZE AND IONIZE THE METAL IMAGE AND TO CAUSE MIGRATION OF THE IONS INTO THE GLASS IN EXCHANGE FOR THE ALKALI METAL IONS THEREIN, AND HEATING THE ARTICLE IN A REDUCING ATMOSPHERE TO REDUCE THE MIGRATED IONS TO METALLIC PARTICLES DISPERSED IN AND COLORING THE SURFACE OF THE GLASS.
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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) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |