US3900609A
Expired / Lapsed
US
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Method for manufacture of a refracting, light permeable oxide layer
Assignee: Balzers Patent und Beteiligungs AG
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Filing: 1973-06-04
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Granted: 1975-08-19
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Expires: 1993-06-04
Abstract
Abstract A highly refracting, light permeable oxide layer on a support, such as a glass plate, comprises oxygen, zirconium and tantalum, the ratio of the number of tantalum atoms to zirconium atoms being in the range of about 1 : 1 to 1 : 2. The application also discloses a method for producing highly refracting, light permeable oxide containing layers on supports, such as of glass, wherein a mixture of metals and/or metal oxide is heated under vacuum conditions to form a vapor which is condensed on the support to form a deposit or layer thereon. According to the inventive method, the mixture which is subjected to the vaccum deposition comprises zirconium and tantalum in metallic or oxidic form, at least one of the tantalum or zirconium, however, being present in oxide form.
Inventors
- 👤 Baptist Wille
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:47
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/245; C23; C23C; C23C14/00; C23C14/06; C23C14/08; C23C14/083; G02B1/105; G; G02; G02B; G02B1/00; G02B1/10; G02B1/14; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/23; C03C2218/00; C03C2218/10; C03C2218/15; C03C2218/151
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
109 words
A METHOD OF PRODUCING A HIGHLY REFRACTIVE, LIGHT PERMEABLE OPTICALLY HOMOGENEOUS LAYER ON A SUPPORT, SAID LAYER ESSENTIALLY CONSISTING OF OXYGEN, ZIRCONIUM AND TANTALUM, THE RATIO OF THE NUMBER OF TANTALUM ATOMS TO ZIRCONIUM ATOMS IN THE LAYER BEING IN THE RANGE OF 1 : 1.36 TO 1 : 1.7 AND THE LAYER BEING ESSENTIALLY DEVOID OF CRYSTALLINE ZIRCONIUM OXIDE, WHICH COMPRISES HEATING UNDER VACUUM CONDITIONS A MIXTURE COMPRISING AT LEAST 20 PER CENT BY WEIGHT OF METALLIC TANTALUM AND AT LEAST 20 PERCENT BY WEIGHT OF ZIRCONIUM OXIDE AND IN AMOUNTS NECESSARY TO OBTAIN SAID RATIO THEREBY TO FORM A VAPOR, AND CONDENSING THE VAPOR ON SAID SUPPORT.
Claim 2
Independent Claim
109 words
A METHOD OF PRODUCING A HIGHLY REFRACTIVE, LIGHT PERMEABLE OPTICALLY HOMOGENEOUS LAYER ON A SUPPORT, SAID LAYER ESSENTIALLY CONSISTING OF OXYGEN, ZIRCONIUM AND TANTALUM, THE RATIO OF THE NUMBER OF TANTALUM ATOMS TO ZIRCONIUM ATOMS IN THE LAYER BEING IN THE RANGE OF 1 : 1.36 TO 1 : 1.7 AND THE LAYER BEING ESSENTIALLY DEVOID OF CRYSTALLINE ZIRCONIUM OXIDE, WHICH COMPRISES HEATING UNDER VACUUM CONDITIONS A MIXTURE COMPRISING AT LEAST 20 PER CENT BY WEIGHT OF METALLIC TANTALUM AND AT LEAST 20 PERCENT BY WEIGHT OF ZIRCONIUM OXIDE AND IN AMOUNTS NECESSARY TO OBTAIN SAID RATIO THEREBY TO FORM A VAPOR, AND CONDENSING THE VAPOR ON SAID SUPPORT.
Claim 3
Dependent Claim
27 words
The method of claim 1, wherein the mixture Essentially consists of metallic tantalum and zirconium oxide in a ratio of 30 : 70 to 70 : 30.
Claim 4
Dependent Claim
22 words
The method as claimed in claim 1, wherein said mixture essentially consists of 50% of metallic tantalum and 50% of zirconium oxide.
Claim 5
Dependent Claim
20 words
The method as claimed in claim 1, wherein said vapor formation and condensation are carried out in an oxidizing atmosphere.
Claim 6
Dependent Claim
14 words
The method as claimed in claim 1, wherein said support is a glass plate.
Claim 7
Dependent Claim
20 words
The method as claimed in claim 1, wherein said support is preheated prior to the formation of said deposit thereon.
Claim 8
Dependent Claim
20 words
The method as claimed in claim 6, wherein said glass plate is heated to about 300*C prior to said deposition.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |