Patent US4873053A successfully refreshed from Google Patents.
US4873053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing a metal boride ceramic material
Assignee: Coorstek KK
•
Filing: 1988-02-12
•
Granted: 1989-10-10
•
Expires: 2008-02-12
Abstract
Abstract A method for manufacturing a metal boride ceramic material, includes mixing metal boride powder with 1-20 wt. % metal powder and 0.1-10 wt. % carbon powder, shaping the mixture and firing it. Alternatively, the metal boride powder may be mixed with 0.1-89 wt. % metal carbide powder thereby make a mixture, followed by shaping the mixture and firing it.
Inventors
- 👤 Junichi Matsushita
- 👤 Hajime Saito
- 👤 Hideo Nagashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:52
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/58; C04B35/5805; C04B35/56; C04B35/5607; C04B35/58064; C04B35/58071; C04B35/58078; C22; C22C; C22C29/00; C22C29/14
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
37 words
A method for manufacturing a metal boride ceramic material, comprising mixing metal boride powder with 1-20 wt. % metal powder and 0.1-10 wt. % carbon powder to thereby make a mixture, shaping the mixture and firing it.
Claim 2
Independent Claim
37 words
A method for manufacturing a metal boride ceramic material, comprising mixing metal boride powder with 1-20 wt. % metal powder and 0.1-10 wt. % carbon powder to thereby make a mixture, shaping the mixture and firing it.
Claim 3
Dependent Claim
119 words
The method of claim 1, wherein the metal boride is at least one member selected from the group consisting of TiB 2 , ZrB 2 , VB 2 , NbB 2 , TaB 2 , MoB 2 , MnB 2 , HfB 2 , AlB 2 , Ti 2 B, Ta 2 B, Cr 2 B, Mo 2 B, W 2 B, Cr 3 B 3 , Nb 3 B 2 , Ta 3 B 2 , TiB, NbB, TaB, CrB, MoB, WB, Nb 3 B 4 , Ta 3 B 4 , Cr 3 B 4 , Ti 2 B 5 , Mo 2 B 5 , W 2 B 5 , ZrB 12 and MoB 12 .
Claim 4
Dependent Claim
17 words
The method of claim 1, wherein the metal boride is MB 2 wherein M denotes a metal.
Claim 5
Dependent Claim
55 words
The method of claim 1, wherein the metal boride is M 2 B 5 , M 2 B, M 5 B 3 , M 3 B 2 , MB, M 3 B 4 , or MB 12 , said metal boride converting to MB when heated to an elevated temperature, wherein M denotes a metal.
Claim 6
Dependent Claim
28 words
The method of claim 1, wherein the metal powder is at least one member selected from the group consisting of Cr, Ni, Ti, Mo, Si, Fe and Ta.
Claim 7
Dependent Claim
13 words
The method of claim 1, wherein the mixture is fired by pressureless sintering.
Claim 8
Dependent Claim
13 words
The method of claim 1, wherein the mixture is fired by pressure sintering.
Claim 9
Independent Claim
44 words
A method for manufacturing a metal boride ceramic material, comprising mixing metal boride powder with 0.1-89 wt. % metal carbide powder to thereby make a mixture consisting essentially of said metal boride powder and said metal carbide powder, shaping said mixture and firing it.
Claim 10
Independent Claim
44 words
A method for manufacturing a metal boride ceramic material, comprising mixing metal boride powder with 0.1-89 wt. % metal carbide powder to thereby make a mixture consisting essentially of said metal boride powder and said metal carbide powder, shaping said mixture and firing it.
Claim 11
Dependent Claim
119 words
The method of claim 8, wherein the metal boride is at least one member selected from a group consisting of TiB 2 , ZrB 2 , VB 2 , NbB 2 , TaB 2 , MoB 2 , MnB 2 , HfB 2 , AlB 2 , Ti 2 B, Ta 2 B, Cr 2 B, Mo 2 B, W 2 B, Cr 3 B 3 , Nb 3 B 2 , Ta 3 B 2 , TiB, NbB, TaB, CrB, MoB, WB, Nb 3 B 4 , Ta 3 B 4 , Cr 3 B 4 , Ti 2 B 5 , Mo 2 B 5 , W 2 B 5 , ZrB 12 and MoB 12 .
Claim 12
Dependent Claim
17 words
The method of claim 8, wherein the metal boride is MB 2 wherein M denotes a metal.
Claim 13
Dependent Claim
50 words
The method of claim 8, wherein the metal boride is M 2 B 5 , M 2 B, M 5 B 3 , M 3 B 2 , MB, M 3 B 4 or MB 12 , said metal boride converting to MB upon being heated to an elevated temperature.
Claim 14
Dependent Claim
34 words
The method of claim 8, wherein the metal of the metal carbide powder is one or more members selected from elements of the 3, 4a, 5a, 6a and 8 groups of the periodic table.
Claim 15
Dependent Claim
13 words
The method of claim 8, wherein the metal carbide powder is chromium carbide.
Claim 16
Dependent Claim
13 words
The method of claim 8, wherein the metal carbide powder is molybdenum carbide.
Claim 17
Dependent Claim
13 words
The method of claim 8, wherein the metal carbide powder is tungsten carbide.
Claim 18
Dependent Claim
13 words
The method of claim 8, wherein the mixture is fired by pressureless sintering.
Claim 19
Dependent Claim
13 words
The method of claim 8, wherein the mixture is fired by pressure sintering.
Claim 20
Independent Claim
64 words
A method for manufacturing a metal boride ceramic material, comprising shaping a mixture consisting essentially of 0.1-89 wt. % metal carbide powder and 99.9-11 wt. % metal boride powder to thereby make a shaped body and thereafter firing the shaped body, wherein the metal boride powder is selected from the group consisting of chromium carbide, molybdenum carbide, tungsten carbide, nickel carbide and iron carbide.
Claim 21
Independent Claim
64 words
A method for manufacturing a metal boride ceramic material, comprising shaping a mixture consisting essentially of 0.1-89 wt. % metal carbide powder and 99.9-11 wt. % metal boride powder to thereby make a shaped body and thereafter firing the shaped body, wherein the metal boride powder is selected from the group consisting of chromium carbide, molybdenum carbide, tungsten carbide, nickel carbide and iron carbide.
Claim 22
Dependent Claim
31 words
The method of claim 18 wherein said firing is to be temperature sufficient to decompose said metal carbide into metal and carbon, thereby freeing carbon for reaction with said metal boride.
Claim 23
Dependent Claim
31 words
The method of claim 18 wherein said firing is to a temperature sufficient to decompose said metal carbide into metal and carbon, thereby freeing carbon for reaction with said metal boride.
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) | 1992-10-09 | 1993-04-10 | 1993-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-09 | 1997-04-10 | 1997-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-09 | 2001-04-10 | 2001-10-10 | $7700.00 | Window Closed / Lapsed |