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Patent US4942097A successfully refreshed from Google Patents.
US4942097A
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Cermet cutting tool
Assignee: Kennametal PC Inc
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Filing: 1987-10-14
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Granted: 1990-07-17
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Expires: 2007-10-14
Abstract
Abstract A cermet cutting tool is provided having a composition containing the following: about 3.5 to about 6.5 w/o (weight percent) nickel; about 4.5 to about 7.5 w/o cobalt, wherein the sum of nickel plus cobalt is between about 8 to 11 w/o; about 20 to about 25 w/o tungsten; about 5 to about 11 w/o molybdenum; up to about 6 w/o tantalum plus niobium; up to about 0.05 w/o chromium; up to about 1 w/o aluminum; and up to about 3 w/o vanadium; with the remainder being essentially titanium, carbon, and nitrogen, wherein at least substantially all the carbon and nitrogen are present as metal compounds selected from the group consisting of metal carbonitrides and mixtures of metal carbonitrides and metal carbides where said metal is selected from the group consisting of tungsten, molybdenum, titanium, tantalum, niobium, vanadium, chromium, their solid solutions and there mixtures.
Inventors
- 👤 Anakkavur T. Santhanam
- 👤 Edward V. Conley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:52
CPC Classifications
B; B22; B22F; B22F7/00; B22F7/06; C; C22; C22C; C22C29/00; C22C29/02; C22C29/04; B22F5/00; F; F02; F02B; F02B3/00; F02B3/06; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12049; Y10T428/12056
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
136 words
A cermet cutting tool consisting essentially of: about 3.5 to about 6.5 w/o nickel; about 4.5 to about 7.5 w/o cobalt; wherein the sum of nickel+cobalt is between about 8.0 to about 11.0 w/o; about 20 to about 25 w/o tungsten; about 5 to about 11.0 w/o molybdenum; up to about 6 w/o tantalum plus niobium; up to about 0.05 w/o chromium; up to about 1 w/o aluminum; up to about 3 w/o vanadium; and the remainder being essentially titanium, carbon, and nitrogen, wherein at least substantially all carbon and nitrogen are present as metal compounds selected from the group consisting of metal carbonitrides and mixtures of metal carbides and metal carbonitrides where said metal is selected from the group consisting of tungsten, molybdenum, titanium, tantalum, niobium, vanadium, chromium, and their solid solutions and their mixtures.
Claim 2
Dependent Claim
136 words
A cermet cutting tool consisting essentially of: about 3.5 to about 6.5 w/o nickel; about 4.5 to about 7.5 w/o cobalt; wherein the sum of nickel+cobalt is between about 8.0 to about 11.0 w/o; about 20 to about 25 w/o tungsten; about 5 to about 11.0 w/o molybdenum; up to about 6 w/o tantalum plus niobium; up to about 0.05 w/o chromium; up to about 1 w/o aluminum; up to about 3 w/o vanadium; and the remainder being essentially titanium, carbon, and nitrogen, wherein at least substantially all carbon and nitrogen are present as metal compounds selected from the group consisting of metal carbonitrides and mixtures of metal carbides and metal carbonitrides where said metal is selected from the group consisting of tungsten, molybdenum, titanium, tantalum, niobium, vanadium, chromium, and their solid solutions and their mixtures.
Claim 3
Dependent Claim
16 words
The cermet cutting tool according to claim 1 wherein nickel is limited to between 3.5-5.5 w/o.
Claim 4
Dependent Claim
16 words
The cermet cutting tool according to claim 1 wherein cobalt is limited to between 4.5-6.5 w/o.
Claim 5
Dependent Claim
17 words
The cermet cutting tool according to claim 1 wherein nickel is limited to 3.5 to 4.5 w/o.
Claim 6
Dependent Claim
19 words
The sintered cermet cutting tool according to claim 3 wherein nickel is limited to between 3.5 to 4.5 w/o.
Claim 7
Dependent Claim
18 words
The sintered cermet cutting tool according to claim 1 wherein cobalt is limited to 4.5 to 5.5 w/o.
Claim 8
Dependent Claim
18 words
The sintered cermet cutting tool according to claim 4 wherein cobalt is limited to 4.5 to 5.5 w/o.
Claim 9
Dependent Claim
20 words
The sintered cermet cutting tool according to claim 1 wherein molybdenum is limited to about 9.5 to about 10.5 w/o.
Claim 10
Dependent Claim
20 words
The sintered cermet cutting tool according to claim 4 wherein molybdenum is limited to about 10 to about 10.4 w/o.
Claim 11
Dependent Claim
21 words
The sintered cermet cutting tool according to claim 1 wherein vanadium is an impurity present at no more than 0.05 w/o.
Claim 12
Dependent Claim
21 words
The sintered cermet cutting tool according to claim 4 wherein vanadium is an impurity present at no more than 0.05 w/o.
Claim 13
Dependent Claim
21 words
The sintered cermet cutting tool according to claim 8 wherein vanadium is an impurity present at no more than 0.05 w/o.
Claim 14
Dependent Claim
21 words
The sintered cermet cutting tool according to claim 9 wherein vanadium is an impurity present at no more than 0.05 w/o.
Claim 15
Dependent Claim
33 words
The cermet cutting tool according to claim 1 wherein tantalum is an impurity present at no more than 0.05 w/o and wherein niobium is an impurity present at no more than 0.05 w/o.
Claim 16
Dependent Claim
33 words
The cermet cutting tool according to claim 7 wherein tantalum is an impurity present at no more than 0.05 w/o and wherein niobium is an impurity present at no more than 0.05 w/o.
Claim 17
Dependent Claim
33 words
The cermet cutting tool according to claim 8 wherein tantalum is an impurity present at no more than 0.05 w/o and wherein niobium is an impurity present at no more than 0.05 w/o.
Claim 18
Dependent Claim
33 words
The cermet cutting tool according to claim 9 wherein tantalum is an impurity present at no more than 0.05 w/o and wherein niobium is an impurity present at no more than 0.05 w/o.
Claim 19
Dependent Claim
33 words
The cermet cutting tool according to claim 10 wherein tantalum is an impurity present at no more than 0.05 w/o and wherein niobium is an impurity present at no more than 0.05 w/o.
Claim 20
Dependent Claim
33 words
The cermet cutting tool according to claim 13 wherein tantalum is an impurity present at no more than 0.05 w/o and wherein niobium is an impurity present at no more than 0.05 w/o.
Claim 21
Dependent Claim
18 words
The cermet cutting tool according to claim 1 wherein tungsten is limited to about 20 to 23 w/o.
Claim 22
Dependent Claim
18 words
The cermet cutting tool according to claim 7 wherein tungsten is limited to about 20 to 23 w/o.
Claim 23
Dependent Claim
18 words
The cermet cutting tool according to claim 8 wherein tungsten is limited to about 20 to 23 w/o.
Claim 24
Dependent Claim
18 words
The cermet cutting tool according to claim 9 wherein tungsten is limited to about 20 to 23 w/o.
Claim 25
Dependent Claim
81 words
A cermet cutting tool consisting essentially of: about 3.5 to about 4.5 w/o nickel; about 4.5 to about 5.5 w/o cobalt; about 20 to about 25 w/o tungsten; about 9.5 to about 10.5 w/o molybdenum; and the remainder being essentially titanium, carbon and nitrogen, except for impurities; wherein at least substantially all said carbon and nitrogen are present as metal compounds selected from the group consisting of the carbides and carbonitrides of titanium, tungsten, molybdenum, their solid solutions and their mixtures.
Claim 26
Dependent Claim
81 words
A cermet cutting tool consisting essentially of: about 3.5 to about 4.5 w/o nickel; about 4.5 to about 5.5 w/o cobalt; about 20 to about 25 w/o tungsten; about 9.5 to about 10.5 w/o molybdenum; and the remainder being essentially titanium, carbon and nitrogen, except for impurities; wherein at least substantially all said carbon and nitrogen are present as metal compounds selected from the group consisting of the carbides and carbonitrides of titanium, tungsten, molybdenum, their solid solutions and their mixtures.
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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) | 1993-07-16 | 1994-01-15 | 1994-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-16 | 1998-01-15 | 1998-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-16 | 2002-01-15 | 2002-07-17 | $7700.00 | Window Closed / Lapsed |