Patent EP0207467A1 successfully refreshed from Google Patents.
EP0207467A1
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Method for the preparation of a coated blade of a microtome
Assignee: Shin-Etsu Chemical Co Ltd
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Filing: 1986-06-27
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Granted: —
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Expires: 2006-06-27
Abstract
Abstract A microtome blade made of, for example, sapphire is imparted with greatly improved cutting power as well as durability and anti-corrosion resistance by providing a coating layer of diamond thereon. Such a coating layer can be formed by subjecting a base blade to a treatment of plasma-induced chemical vapor deposition of diamond in an atmosphere of a gaseous mixture of a hydrocarbon compound and hydrogen followed by a heat treatment at 700-1300 °C to expel any adsorbed impurities in the diamond layer.
Inventors
- 👤 Hajime Kitamura
- 👤 Tamaki Iida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 10:24
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C23C16/26; C23C16/27; C23C16/274; B; B26; B26B; B26B21/00; B26B21/54; B26B21/58; B26B21/60; C23C16/56; C30; C30B; C30B29/00; C30B29/10; C30B29/16; C30B29/20; C30B33/00; G; G01; G01N; G01N1/00; G01N1/02; G01N1/04; G01N1/06; G01N2001/061
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
24 words
A microtome blade which comprises: (a) a base blade; and (b) a coating layer of diamond formed on the surface of the base blade.
Claim 2
Dependent Claim
24 words
A microtome blade which comprises: (a) a base blade; and (b) a coating layer of diamond formed on the surface of the base blade.
Claim 3
Dependent Claim
25 words
The microtome blade as claimed in claim 1 wherein the coating layer of diamond has a thickness in the range from 5 to 50 nm.
Claim 4
Independent Claim
101 words
A method for the preparation of a microtome blade coated with a layer of diamond which comprises the steps of: (a) subjecting a base blade to a treatment of plasma-induced chemical vapor deposition of diamond by exposing the same to an atmosphere of plasma generated in a gaseous mixture composed of a hydrocarbon compound and hydrogen; and (b) subjecting the base blade thus coated with a layer of diamond to a heat treatment at a temperature in the range from 700 to 1300 °C for a length of time in the range from 0.5 to 1.5 hours in an inert atmosphere.
Claim 5
Independent Claim
101 words
A method for the preparation of a microtome blade coated with a layer of diamond which comprises the steps of: (a) subjecting a base blade to a treatment of plasma-induced chemical vapor deposition of diamond by exposing the same to an atmosphere of plasma generated in a gaseous mixture composed of a hydrocarbon compound and hydrogen; and (b) subjecting the base blade thus coated with a layer of diamond to a heat treatment at a temperature in the range from 700 to 1300 °C for a length of time in the range from 0.5 to 1.5 hours in an inert atmosphere.
Claim 6
Dependent Claim
41 words
The method for the preparation of a microtome blade coated with a layer of diamond as claimed in claim 3 wherein the gaseous mixture is composed of a hydrocarbon compound and hydrogen in a ratio from 0.2:99.8 to 10:90 by volume.
Claim 7
Dependent Claim
36 words
The method for the preparatiop of a microtome blade coated with a layer of diamond as claimed in claim 3 wherein the hydrocarbon compound is selected from the group consisting of methane, ethane, propane and ethylene.
Claim 8
Dependent Claim
41 words
The method for the preparation of a microtome blade coated with a layer of diamond as claimed in claim 3 wherein the gaseous mixture of the hydrocarbon compound and hydrogen has a pressure in the range from 0.0027 to 2.7 kPa.
References Cited (Backward Citations)
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