US4437800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutting tool
Assignee: NOF Corp
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Filing: 1981-08-31
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Granted: 1984-03-20
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Expires: 2001-08-31
Abstract
Abstract A cutting tool having a high wear resistance is disclosed. The cutting tool consists of a plate-shaped body comprising a sintered cermet layer and a sintered body layer containing high density boron nitride or diamond, said sintered cermet layer constituting the center portion of the plate-shaped body and being surrounded and adhered at the side surface or at the side surface and upper and lower surfaces with the sintered body layer.
Inventors
- 👤 Masatada Araki
- 👤 Yukio Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:42
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/14; B23B27/18; B22; B22F; B22F7/00; B22F7/06; B22F7/062; B23B27/141; B22F5/00; B22F2005/001; B23B2200/00; B23B2200/32; B23B2200/321; B23B2200/323; B23B2222/00; B23B2222/16; B23B2226/00; B23B2226/12; B23B2226/125; B23B2226/31; Y; Y10; Y10T; Y10T407/00; Y10T407/26; Y10T407/27
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
61 words
A cutting tool consisting of a plate-shaped body comprising a sintered cermet layer and a sintered body layer containing high density boron nitride or diamond, said sintered cermet layer constituting the center portion of the plate-shaped body and being surrounded and adhered at the side surface or at the side surface and upper and lower surfaces with the sintered body layer.
Claim 2
Dependent Claim
61 words
A cutting tool consisting of a plate-shaped body comprising a sintered cermet layer and a sintered body layer containing high density boron nitride or diamond, said sintered cermet layer constituting the center portion of the plate-shaped body and being surrounded and adhered at the side surface or at the side surface and upper and lower surfaces with the sintered body layer.
Claim 3
Dependent Claim
39 words
A cutting tool according to claim 1, wherein at least one surface of the side surface, upper surface and lower surface of the sintered body layer containing high density boron nitride or diamond is configured as a chip breaker.
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) | 1987-03-20 | 1987-09-19 | 1988-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-20 | 1991-09-19 | 1992-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-20 | 1995-09-19 | 1996-03-20 | $7700.00 | Window Closed / Lapsed |