Method for preparation of edged medical tool
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 25, 1990
Grant Date -
N/A
app pub date -
Apr 21, 1989
filing date -
Apr 3, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An edged medical tool, such as scalpels and injection needles, is imparted with unexpectedly improved incisiveness by first providing a carbonaceous coating layer of 1 to 20 nm thickness having a crystalline structure of diamond by a method of plasma-induced vapor-phase deposition in an atmosphere of a mixture of hydrogen gas and a hydrocarbon gas at a microwave frequency of 1 to 10 GHz and then etching the thus formed diamond-like coating layer in a plasma of hydrogen gas to such an extent that the thus etched surface has a roughness of 0.5 to 5 nm.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully