US4436830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating for metal-cutting tools
Assignee: VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY INSTRUMENTALNY INSTITUT
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Filing: 1981-03-02
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Granted: 1984-03-13
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Expires: 2001-03-02
Abstract
Abstract A coating for a metal-cutting tool consisting of 90 to 70 wt. % of titanium nitride and 10 to 30 wt. % of chromium nitride or 3 to 18 wt. % of aluminium nitride, 2 to 8 wt. % of molybdenum nitride, 2 to 10 wt. % of chromium nitride, 0.5 to 10 wt. % of silicon nitride, taken in combination and uniformly distributed within the volume of the coating, titanium nitride being the balance. The coating is intended predominantly for application to metal-cutting tools when working stainless steels and refractory alloys.
Inventors
- 👤 Anatoly A. Andreev
- 👤 Igor V. Gavrilko
- 👤 Alexei G. Gavrilov
- 👤 Anatoly S. Vereschaka
- 👤 Viktor P. Zhed
- 👤 Valentin G. Padalka
- 👤 Andrei K. Sinelschikov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:45
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/14; B23B27/148; C; C23; C23C; C23C14/00; C23C14/0021; C23C16/00; C23C16/22; C23C16/30; C23C16/34; C23C30/00; C23C30/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A coating for a metal-cutting tool consisting of titanium nitride, characterized in that it additionally contains either chromium nitride in an amount of from 10 to 30% by weight, or aluminium nitride in an amount of from 3 to 18% by weight, molybdenum nitride in an amount of from 2 to 8% by weight, chromium nitride in an amount of from 2 to 10% by weight and silicon nitride in an amount of from 0.5 to 10% by weight, all being taken in combination and uniformly distributed within the volume of the coating.
Claim 2
Dependent Claim
93 words
A coating for a metal-cutting tool consisting of titanium nitride, characterized in that it additionally contains either chromium nitride in an amount of from 10 to 30% by weight, or aluminium nitride in an amount of from 3 to 18% by weight, molybdenum nitride in an amount of from 2 to 8% by weight, chromium nitride in an amount of from 2 to 10% by weight and silicon nitride in an amount of from 0.5 to 10% by weight, all being taken in combination and uniformly distributed within the volume of the coating.
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) | 1987-03-13 | 1987-09-12 | 1988-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-13 | 1991-09-12 | 1992-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-13 | 1995-09-12 | 1996-03-13 | $7700.00 | Window Closed / Lapsed |