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:
Mar. 17, 1992
Filed:
Dec. 07, 1990
Applicant:
Inventors:
Hiroyuki Shiga, Kita, JP;
Masayuki Kawasaki, Miyashirocho, JP;
Assignee:
Pentel Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B43K / ; B43K / ;
U.S. Cl.
CPC ...
401199 ; 401261 ; 401265 ; 401292 ;
Abstract
A ceramic nib for a writing instrument having a tapered outer surface which converges toward a writing point end to form a tapered point, and at least one ink passage extending along the length of the nib such that the ink passage is converged along with the convergence of the outer surface of the ceramic tapered point of the nib, the ink passage having a bottom surface which is tapered such that it becomes more narrow towards the tapered point.