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:
Jun. 03, 2008
Filed:
Jan. 30, 2003
Kazuhiko Furukawa, Kouza-gun, JP;
Kiyoshi Fujisawa, Takasaki, JP;
Kazuhiko Furukawa, Kouza-gun, JP;
Kiyoshi Fujisawa, Takasaki, JP;
Mitsubishi Pencil Kabushiki Kaisha, Tokyo, JP;
Abstract
A gas-pressurized writing instrument simply constructed so that a compressed gas will not escape to the outside by providing a writing point assembly () at the front end () of a tube member (), storing an ink () to be fed to the writing point assembly () in the tube member (), encasing at least part of the tube member () by a casing cylinder () so as to form a space () communicating with the rear opening of tube member (), and sealing a compressed gas inside the space () so that the compressed gas will push the ink out to writing point assembly () to secure the writing performance, wherein the casing cylinder () is formed of a material that presents low gas permeability or gas impermeability.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile