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:
Sep. 17, 2024
Filed:
Apr. 26, 2023
Applicant:
Kotobuki & Co., Ltd., Kawagoe, JP;
Inventors:
Hidehei Kageyama, Kawagoe, JP;
Toshikazu Sasaki, Kawagoe, JP;
Assignee:
KOTOBUKI & CO., LTD., Kawagoe, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B43K 24/04 (2006.01); B43K 7/02 (2006.01); B43K 7/12 (2006.01); B43K 27/08 (2006.01); B43K 27/12 (2006.01);
U.S. Cl.
CPC ...
B43K 24/04 (2013.01); B43K 7/02 (2013.01); B43K 7/12 (2013.01); B43K 27/08 (2013.01); B43K 27/12 (2013.01);
Abstract
In one embodiment, a writing instrument refill includes a first portion having flexibility, and a second portion having a cross-sectional area larger than a cross-sectional area of the first portion, wherein the center of figure of the cross section of the first portion is offset from the center of the figure of the cross section of the second portion, the first portion and the second portion are formed integrally, and a part of the first portion has an outer diameter smaller than an outer diameter of the other part of the first portion.