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:
May. 13, 2014
Filed:
Aug. 29, 2008
Applicants:
Akihito Hongo, Tsuchiura, JP;
Tadashi Koike, Minori-cho, JP;
Inventors:
Akihito Hongo, Tsuchiura, JP;
Tadashi Koike, Minori-cho, JP;
Assignee:
Hitachi Metals, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 4/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of manufacturing a hollow waveguide including a metal pipe and a hollow region formed inside of the metal pipe includes pressure-bonding metal pipes each of which includes a metal material different from each other to form a metal-clad pipe including an inside metal layer and an outside metal layer, and polishing a surface of the inside metal layer.