Patent US3293052A successfully refreshed from Google Patents.
US3293052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass article and method of making it
Assignee: Corning Glass Works
•
Filing: 1963-03-14
•
Granted: 1966-12-20
•
Expires: 1983-03-14
Abstract
No abstract record available.
Inventors
- 👤 Loris G Sawchuk
- 👤 Stanley D Stookey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:10
CPC Classifications
C; C03; C03C; C03C4/00; C03C4/04; C03C4/06; C03C4/065; C03C10/00; C03C3/00; C03C3/04; C03C3/076; C03C3/089; C03C3/091
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PHOTOTROPIIC ARTICLE COMPRISING A BODY OF A SILICATE GLASS HAVING IN AT LEAST A PORTION THEREOF CRYSTALS OF AT LEAST ONE SILVER COMPOUND SELECTED FROM THE GROUP CONSISTING OF SILVER MOLYBDATE, SILVER TUNGSTATE, AND SILVER MOLYBDATE-TUNGSTATE SOLID SOLUTION, SAIID PORTION OF THE GLASS CONTAINING, BY WEIGHT ON THE ANALYZED BASIS, ABOUT 0.2-0.8% SILVER ABD 2.5-10% TOTAL OF THE OXIDE OF AT LEAST ONE HEAVY METAL SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM AND TUNGSTEN.
Claim 2
Dependent Claim
75 words
A PHOTOTROPIIC ARTICLE COMPRISING A BODY OF A SILICATE GLASS HAVING IN AT LEAST A PORTION THEREOF CRYSTALS OF AT LEAST ONE SILVER COMPOUND SELECTED FROM THE GROUP CONSISTING OF SILVER MOLYBDATE, SILVER TUNGSTATE, AND SILVER MOLYBDATE-TUNGSTATE SOLID SOLUTION, SAIID PORTION OF THE GLASS CONTAINING, BY WEIGHT ON THE ANALYZED BASIS, ABOUT 0.2-0.8% SILVER ABD 2.5-10% TOTAL OF THE OXIDE OF AT LEAST ONE HEAVY METAL SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM AND TUNGSTEN.
References Cited (Backward Citations)
US2704420A
Cited
US3208860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |