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:
Nov. 23, 2021
Filed:
Oct. 21, 2019
The Pilot Ink Co., Ltd., Aichi, JP;
Kabushiki Kaisha Pilot Corporation, Tokyo, JP;
Yoshihiro Ito, Aichi, JP;
THE PILOT INK CO., LTD., Nagoya, JP;
KABUSHIKI KAISHA PILOT CORPORATION, Tokyo, JP;
Abstract
A thermochromic writing instrument including a writing body, storing a thermochromic ink therein, stored in a barrel; an operation body provided in the barrel to be operated to longitudinally move the writing body; a nib of the writing body configured to be capable of appearing from a front end of the writing instrument, wherein the writing instrumentfurther includes a friction unit, for rubbing handwriting in the thermochromic ink and capable of thermally changing the color of the handwriting by frictional heat generated at that time, and at least one clip body as the operation body, the friction unitis provided at a rear end of the barrel, and the clip body is provided in an area other than the rear end of the barrel.