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:
Oct. 30, 2001
Filed:
Mar. 26, 1999
Applicant:
Inventors:
Akira Fujishima, Kawasaki, JP;
Hideki Masuda, Hachioji, JP;
Assignee:
The University of Tokyo, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B81B 7/04 ;
U.S. Cl.
CPC ...
B81B 7/04 ;
Abstract
A method of producing a needle-like diamond structure including the steps of forming a layer of anodized alumina on a diamond substrate, the anodized alumina having a plurality of through holes; vapor-depositing a substance resistant to plasma etching by a vacuum vapor-depositing method to form dots on said diamond substrate, wherein the layer of anodized alumina acts as a mask for the vapor deposition; removing the anodized alumina; and performing a plasma etching treatment while using the dots as a mask, thereby forming regularly-arranged, needle-like diamond columns.