US3815036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
INFRARED WINDOWS AND OPTICAL COATINGS FOR SAME DERIVED FROM CD{11 SnO{11
Assignee: Individual
•
Filing: 1973-01-26
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Granted: 1974-06-04
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Expires: 1993-01-26
Abstract
Abstract Cadmium stannate (Cd2Sn04) is shown to provide an infrared transmitting composition when the electrical resistivity is maintained above 10 ohm-cm. by controlling the oxygen vacancy concentration of the material. Amorphous and crystalline films of Cd2Sn04 can be disposed on light transmitting substrates and they exhibit high infrared transparency as well as providing protection against adverse atmospheric environments. In particular, cadmium stannate of high electrical resistivity is shown to be useful as an optical window component (both as the window or as a coating for known windows) for use in high power gas phase lasers.
Inventors
- 👤 A Nozik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:23
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/84; C; C01; C01G; C01G19/00; C23; C23C; C23C14/00; C23C14/06; C23C14/08; C23C14/086; H01; H01B; H01B1/00; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/034
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
21 words
The system of claim 1 wherein said cadmium stannate has a resistivity greater than about 104 ohm-cm to about 107 ohm-cm.
Claim 2
Dependent Claim
18 words
The system of claim 1 wherein said cadmium stannate is in the form of a self-supporting crystalline body.
Claim 3
Dependent Claim
29 words
The system of claim 1 wherein said cadmium stannate is in the form of a coating on an infrared window whereby said window is protected from adverse environmental conditions.
References Cited (Backward Citations)
US3614652A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |