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:
Jan. 19, 1993
Filed:
May. 29, 1991
Ikuo Hosoya, Sodegaura, JP;
Yasuhiro Yoneyama, Sodegaura, JP;
Idemitsu Petrochemical Company Limited, Tokyo, JP;
Abstract
An interrupting layer of inorganic powder other than diamond is formed on the surface of a substrate and a surface of the interrupting layer is contacted with excited raw material gases containing a carbon source, under conditions suited to depositing of diamond on the interrupting layer. The diamond which is synthesized is separated from the substrate. The use of the interrupting layer, composed of the inorganic fine powders, allows ready separation of the diamond from the substrate and the diamond separated is suitable for diaphragms for speakers, heat conductive plates, cutting tools, semiconductors, etc. by appropriately choosing shapes of the substrate. Further, the resulting diamond film can be pulverized, thereby yielding diamond powders which are useful for abrasive tools, cutting tools, etc.