US5114745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a thin carbide layer on a carbon substrate, growing a diamond or diamond-like film on the carbide layer, and removing the carbon substrate
Assignee: Individual
•
Filing: 1990-05-30
•
Granted: 1992-05-19
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Expires: 2010-05-30
Abstract
Abstract A method of producing a diamond or diamond-like film having a desired profile which involves providing a solid carbon substrate having a surface shaped to the desired profile, creating a thin carbide layer on the profiled surface growing a diamond or diamond-like film on the carbide layer, removing the carbon substrate and optionally also removing the carbide layer.
Inventors
- 👤 Barbara L. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:39
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/01; C23C16/22; C23C16/26; Y; Y10; Y10S; Y10S427/00; Y10S427/103; Y10S427/106
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
74 words
A method of producing a diamond or diamond-like film having a desired profile includes the steps of providing a solid carbon substrate having a surface shaped to the desired profiled, producing a thin carbide layer on the profiled surface, growing a diamond or diamond-like film on the carbide layer and removing the substrate, wherein the solid substrate and/or carbide layer are removed by a method selected from machining, milling, etching and a combination thereof.
Claim 2
Independent Claim
74 words
A method of producing a diamond or diamond-like film having a desired profile includes the steps of providing a solid carbon substrate having a surface shaped to the desired profiled, producing a thin carbide layer on the profiled surface, growing a diamond or diamond-like film on the carbide layer and removing the substrate, wherein the solid substrate and/or carbide layer are removed by a method selected from machining, milling, etching and a combination thereof.
Claim 3
Dependent Claim
13 words
A method according to claim 1 wherein the carbide layer is also removed.
Claim 4
Dependent Claim
13 words
A method according to claim 1 wherein the substrate is a graphite substrate.
Claim 5
Dependent Claim
25 words
A method according to claim 1 wherein the carbide is a carbide of a high melting metal selected from titanium, hafnium, zirconium, molybdenum and tantalum.
Claim 6
Dependent Claim
18 words
A method according to claim 1 wherein the carbide layer has a thickness of less than 20 microns.
Claim 7
Dependent Claim
18 words
A method according to claim 1 wherein the carbide layer has a thickness of less than 5 microns.
Claim 8
Dependent Claim
22 words
A method according to claim 1 wherein the diamond or diamond-like film is grown on the carbide layer by chemical vapour deposition.
References Cited (Backward Citations)
US4434188A
Cited
US4707384A
Cited
JPS61106494A
Cited
JPS61151097A
Cited
US5023068A
Cited
US4987002A
Cited
JPH02175696A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-05-19 | 1995-11-18 | 1996-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-19 | 1999-11-18 | 2000-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-19 | 2003-11-18 | 2004-05-19 | $7700.00 | Window Closed / Lapsed |