US3202054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation filter with plural iridized metal oxide films
Assignee: Corning Glass Works
•
Filing: 1959-10-16
•
Granted: 1965-08-24
•
Expires: 1979-10-16
Abstract
No abstract record available.
Inventors
- 👤 John M Mochel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:48
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/208; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A RADIATION FILTER COMPRISING A CLEAR GLASS SUBSTRATE THAT IS NORMALLY TRANSPARENT TO SOLAR RADIATION, AND A PLURALITY OF IRIDIZED METAL OXIDE FILMS DIFFERING FROM EACH OTHER IN THICKNESS BY AN AMOUNT NOT EXCEEDING ABOUT 10%, SAID PLURALITY OF METAL OXIDE FILMS INCLUDING AT LEAST TWO ALTERNATE FILMS, EACH COMPOSED OF ABOUT EQUAL PARTS OF CHROMIUM OXIDE AND AN OXIDE SELECTED FROM THE GROUP CONSISTING OF COBALT OXIDE AND NICKEL OXIDE, HAVING A REFLECTANCE PEAK OF AT LEAST 25% LOCATED IN THE NEAR INFRARED PORTION OF THE SPECTRUM, AND PROVIDING A NEUTRAL GRAY COLOR DE TO SUBSTANTIALLY UNIFORM TRNASMISSION ACROSS THE VISIBLE PORTION OF THE SPECTRUM, AND SAID PLURALITY OF METAL OXIDE FILMS FURTHER INCLUDING AT LEAST ONE INTERMEDIATE FILM HAVING A LOWER REFRACTIVE INDEX THAN SAID ALTERNATE FILMS AND BEING COMPOSED OF AN OXIDE SELECTED FROM THE GROUP CONSISTING OF AMORPHOUS AL2O3 AND SIO2.
Claim 2
Dependent Claim
145 words
A RADIATION FILTER COMPRISING A CLEAR GLASS SUBSTRATE THAT IS NORMALLY TRANSPARENT TO SOLAR RADIATION, AND A PLURALITY OF IRIDIZED METAL OXIDE FILMS DIFFERING FROM EACH OTHER IN THICKNESS BY AN AMOUNT NOT EXCEEDING ABOUT 10%, SAID PLURALITY OF METAL OXIDE FILMS INCLUDING AT LEAST TWO ALTERNATE FILMS, EACH COMPOSED OF ABOUT EQUAL PARTS OF CHROMIUM OXIDE AND AN OXIDE SELECTED FROM THE GROUP CONSISTING OF COBALT OXIDE AND NICKEL OXIDE, HAVING A REFLECTANCE PEAK OF AT LEAST 25% LOCATED IN THE NEAR INFRARED PORTION OF THE SPECTRUM, AND PROVIDING A NEUTRAL GRAY COLOR DE TO SUBSTANTIALLY UNIFORM TRNASMISSION ACROSS THE VISIBLE PORTION OF THE SPECTRUM, AND SAID PLURALITY OF METAL OXIDE FILMS FURTHER INCLUDING AT LEAST ONE INTERMEDIATE FILM HAVING A LOWER REFRACTIVE INDEX THAN SAID ALTERNATE FILMS AND BEING COMPOSED OF AN OXIDE SELECTED FROM THE GROUP CONSISTING OF AMORPHOUS AL2O3 AND SIO2.
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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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |