The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 18, 1995
Filed:
Oct. 21, 1993
Shigetomo Matsui, Higashiosaka, JP;
Hiroyuki Matsumura, Kobe, JP;
Yoshikazu Ikemoto, Kobe, JP;
Hideki Shimizu, Kobe, JP;
Tatsuo Obata, Yokohama, JP;
Masashi Shigeto, Yokohama, JP;
Kawasaki Jukogyo Kabushiki Kaisha, Hyogo, JP;
Abstract
A tube is formed from a polycrystalline silicon carbide having a density of from 3.18 to 3.21 g/cm.sup.3, a maximum impurity content of 20 ppm, and imperviousness to fluids by a process which comprises precipitating the silicon carbide on the surface of a rod-shaped graphite structure by a chemical vapor-phase synthesis method and thereafter removing the graphite structure. A water-jet nozzle of high resistance to abrasive wear can be produced by using this tube as an inner tube thereof to form the flow path for a water jet to be ejected therethrough.