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US4411960A
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US
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Articles coated with wear-resistant titanium compounds
Assignee: Osram Sylvania Inc
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Filing: 1981-12-21
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Granted: 1983-10-25
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Expires: 2001-12-21
Abstract
Abstract A wear resistant coating on ceramic or metallic substrates is provided by coating the substrate with a titanium based alloy and then converting the titanium to titanium carbide, titanium nitride, titanium carboxynitride or titanium boride.
Inventors
- 👤 Howard Mizuhara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:32
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/52; C04B41/80; C04B41/81; C04B41/89; C23; C23C; C23C24/00; C23C24/08; C23C24/10; C23C26/00; C23C28/00; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12458; Y10T428/12493; Y10T428/12535; Y10T428/12576; Y10T428/12771; Y10T428/12806
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
142 words
An article of manufacture consisting essentially of a substrate selected from ceramic and metallic substrates and a coating over at least a portion of said substrate said coating having an outer surface consisting essentially of from about 3% to about 27% nickel, from about 0 to about 24% by weight of copper and balance selected from the group consisting of titanium carbide, titanium nitride, titanium carboxynitride and mixtures thereof, an inner surface adjacent and bonded to said substrate said inner surface consisting essentially of from about 5% to about 30% by weight of nickel, from 0 to about 25% by weight of copper, balance titanium, said inner and outer surfaces having been formed from the same brazing alloy composition and a zone between said outer and inner surface containing a gradient of elemental concentration intermediate between said outer and said inner surfaces.
Claim 2
Dependent Claim
142 words
An article of manufacture consisting essentially of a substrate selected from ceramic and metallic substrates and a coating over at least a portion of said substrate said coating having an outer surface consisting essentially of from about 3% to about 27% nickel, from about 0 to about 24% by weight of copper and balance selected from the group consisting of titanium carbide, titanium nitride, titanium carboxynitride and mixtures thereof, an inner surface adjacent and bonded to said substrate said inner surface consisting essentially of from about 5% to about 30% by weight of nickel, from 0 to about 25% by weight of copper, balance titanium, said inner and outer surfaces having been formed from the same brazing alloy composition and a zone between said outer and inner surface containing a gradient of elemental concentration intermediate between said outer and said inner surfaces.
Claim 3
Dependent Claim
132 words
An article of manufacture consisting essentially of a substrate selected from ceramic and metallic substrates and a coating over at least a portion of said substrate, said coating consisting essentially of an outer surface consisting essentially of from 0 to about 21.5% by weight of copper, from about 4.75% to about 31% by weight of nickel boride, balance titanium boride and an inner surface bonded to said substrate said inner surface consisting essentially of from 0 to 25% by weight of copper, from about 5% by weight to about 30% by weight of nickel, balance titanium, said inner and outer surfaces having been formed from the same brazing alloy composition and a zone between said inner and outer surfaces containing a gradient of elemental concentration intermediate between said inner and outer surfaces.
Claim 4
Dependent Claim
132 words
An article of manufacture consisting essentially of a substrate selected from ceramic and metallic substrates and a coating over at least a portion of said substrate, said coating consisting essentially of an outer surface consisting essentially of from 0 to about 21.5% by weight of copper, from about 4.75% to about 31% by weight of nickel boride, balance titanium boride and an inner surface bonded to said substrate said inner surface consisting essentially of from 0 to 25% by weight of copper, from about 5% by weight to about 30% by weight of nickel, balance titanium, said inner and outer surfaces having been formed from the same brazing alloy composition and a zone between said inner and outer surfaces containing a gradient of elemental concentration intermediate between said inner and outer surfaces.
References Cited (Backward Citations)
US3652237A
Cited
US3787223A
Cited
US3868235A
Cited
US4101703A
Cited
US4101703B1
Cited
US3999953A
Cited
DE2528255A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-24 | 1987-04-25 | 1987-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-24 | 1991-04-25 | 1991-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-24 | 1995-04-25 | 1995-10-25 | $7700.00 | Window Closed / Lapsed |