Patent US3916075A successfully refreshed from Google Patents.
US3916075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemically highly resistant material
Assignee: US Philips Corp
•
Filing: 1973-07-16
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Granted: 1975-10-28
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Expires: 1993-07-16
Abstract
Abstract Thin films of boron nitride become more resistant to environmental influences and exhibit a better etching behaviour (a Permalloy etch instead of hydrofluoric acid can be used) when titanium (zirconium, hafnium) is provided together with boron nitride during the provision of the films, for example, by cathode sputtering. Dependent on the titanium content the thin films constitute, for example, insulators or resistors. The BN/Ti films have eminent sliding properties and may be used, for example, as a solid lubricant and for potentiometers.
Inventors
- 👤 Heinz Dimigen
- 👤 Hubertus Hubsch
- 👤 Holger Luthje
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:35
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/06; C23C14/0641; C23C14/0647; Y; Y10; Y10S; Y10S428/00; Y10S428/913
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
49 words
A CHEMICALLY RESISTANT MATERIAL WHICH IS PROVIDED IN THE FORM OF A THIN FILM ON SUBSTRATES, SAID MATERIAL BEING A MIXTURE CONSISTING ESSENTIALLY OF FROM 0.5 TO 95% BY WEIGHT OF AT LEAST ONE ELEMENT FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM, AND HAFNIUM AND THE BALANCE BORON NITRIDE.
Claim 2
Dependent Claim
49 words
A CHEMICALLY RESISTANT MATERIAL WHICH IS PROVIDED IN THE FORM OF A THIN FILM ON SUBSTRATES, SAID MATERIAL BEING A MIXTURE CONSISTING ESSENTIALLY OF FROM 0.5 TO 95% BY WEIGHT OF AT LEAST ONE ELEMENT FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM, AND HAFNIUM AND THE BALANCE BORON NITRIDE.
Claim 3
Dependent Claim
12 words
Use of the material recited in claim 1 as a solid lubricant.
Claim 4
Dependent Claim
18 words
A material as in claim 1, containing 1 to 6% by weight of said at least one element.
Claim 5
Dependent Claim
13 words
Use of the material recited in claim 3 as an electrically insulating material.
Claim 6
Dependent Claim
18 words
A material as in claim 1, containing 0.5 to 15% by weight of said at least one element.
Claim 7
Dependent Claim
13 words
Use of the material as recited in claim 5 as an optical material.
Claim 8
Dependent Claim
18 words
A material as in claim 1, containing 5 to 95% by weight of said at least one element.
Claim 9
Dependent Claim
11 words
A material as in claim 1, wherein said element is titanium.
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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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |