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:
Dec. 04, 2007
Filed:
Jan. 30, 2003
Kazuhiko Furukawa, Kouza-gun, JP;
Kiyoshi Fujisawa, Takasaki, JP;
Yoshihide Ishii, Yokohama, JP;
Daisen Kato, Kamakura, JP;
Kazuhiko Furukawa, Kouza-gun, JP;
Kiyoshi Fujisawa, Takasaki, JP;
Yoshihide Ishii, Yokohama, JP;
Daisen Kato, Kamakura, JP;
Mitsubishi Pencil Kabushiki Kaisha, Tokyo, JP;
Abstract
A writing point assembly and an ink tube and/or a holder can be welded appropriately at a predetermined area without using ultrasonic waves, so as to be able to prevent dislodging of the writing point assembly, ink leakage and the like. The rear end part, of a metallic writing point assembly as a part of a writing instrument, is inserted into a joint, and is heated at the predetermined area (at least the fitted area in contact with the front end part of the joint), so as to weld the predetermined area of the writing point assembly to the surrounding part of the joint.