Patent US3208860A successfully refreshed from Google Patents.
US3208860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phototropic material and article made therefrom
Assignee: Corning Glass Works
•
Filing: 1962-07-31
•
Granted: 1965-09-28
•
Expires: 1982-07-31
Abstract
No abstract record available.
Inventors
- 👤 William H Armistcad
- 👤 Stanley D Stookey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:06
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/22; G02B5/23; C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/089; C03C3/091; C03C4/00; C03C4/04; C03C4/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A PHOTOTROPIC ARTICLE COMPRISING A SILICATE GLASS BODY HAVING IN AT LEAST A PORTION THEREOF MICROCRYSTALS OF AT LEAST ONE SILVER HALIDE SELECTED FROM THE GROUP CONSISTING OF SILVER CHLORIDE, SILVER BROMIDE, AND SILVER IODIDE, THE CONCENTRATION OF SAID CRYSTALS IN SAID PORTION BEING AT LEAST 0.005% BY VOLUME.
Claim 2
Dependent Claim
49 words
A PHOTOTROPIC ARTICLE COMPRISING A SILICATE GLASS BODY HAVING IN AT LEAST A PORTION THEREOF MICROCRYSTALS OF AT LEAST ONE SILVER HALIDE SELECTED FROM THE GROUP CONSISTING OF SILVER CHLORIDE, SILVER BROMIDE, AND SILVER IODIDE, THE CONCENTRATION OF SAID CRYSTALS IN SAID PORTION BEING AT LEAST 0.005% BY VOLUME.
References Cited (Backward Citations)
US2049765A
Cited
US2219895A
Cited
US2971853A
Cited
US2662035A
Cited
US2662036A
Cited
US3020238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |