US3874900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article coated with titanium carbide and titanium nitride
Assignee: Standco Industries Inc
•
Filing: 1973-08-13
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Granted: 1975-04-01
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Expires: 1993-08-13
Abstract
Abstract Disclosed is a composite coating for wear surfaces comprising a layer of vapor deposited titanium nitride overlying a layer of titanium carbide. The composite coating is formed by successive chemical vapor depositions of titanium carbide and titanium nitride on a heated substrate.
Inventors
- 👤 Robert C Post
- 👤 Allen W Mccullough
- 👤 James H Mcclure
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:31
CPC Classifications
C; C23; C23C; C23C30/00; C23C30/005; C23C16/00; C23C16/22; C23C16/30; C23C16/32; C23C16/34; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
29 words
AN ARTICLE OF MANUFACTURE COMPRISING: A. A SUBSTRATE, AND B. A COMPOSITE COATING ON AT LEAST ONE SURFACE OF SAID SUBSTRATE, SAID COMPOSITE COATING INCLUDING A LAYER OF TITA-
Claim 2
Dependent Claim
29 words
AN ARTICLE OF MANUFACTURE COMPRISING: A. A SUBSTRATE, AND B. A COMPOSITE COATING ON AT LEAST ONE SURFACE OF SAID SUBSTRATE, SAID COMPOSITE COATING INCLUDING A LAYER OF TITA-
Claim 3
Dependent Claim
30 words
The article of manufacture defined in claim 1 wherein said layer of titanium carbide is about 0.00020 inch thick and said layer of titanium nitride is about 0.00005 inch thick.
Claim 4
Dependent Claim
72 words
An article of manufacture comprising: a. a metal substrate having carbon disposed in a region adjacent the surface thereof; b. an interlayer formed in said region and adjacent the surface of said substrate, said interlayer containing titanium, titanium carbide, carbon and the metal of said substrate; c. a dense, adherent, continuous coating of titanium carbide bonded to said interlayer; and d. a coating of titanium nitride overlying said layer of titanium carbide.
Claim 5
Dependent Claim
72 words
An article of manufacture comprising: a. a metal substrate having carbon disposed in a region adjacent the surface thereof; b. an interlayer formed in said region and adjacent the surface of said substrate, said interlayer containing titanium, titanium carbide, carbon and the metal of said substrate; c. a dense, adherent, continuous coating of titanium carbide bonded to said interlayer; and d. a coating of titanium nitride overlying said layer of titanium carbide.
Claim 6
Dependent Claim
28 words
In a tool having a wear surface, a coating of titanium carbide covering said wear surface and a coating of titanium nitride covering said coating of titanium carbide.
Claim 7
Dependent Claim
28 words
In a tool having a wear surface, a coating of titanium carbide covering said wear surface and a coating of titanium nitride covering said coating of titanium carbide.
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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |