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:
Feb. 07, 1978
Filed:
Aug. 06, 1975
Applicant:
Inventor:
Katsumi Otsuka, Funabashi, JA;
Assignee:
Teibow Company Limited, Shizuoka, JA;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B43K / ;
U.S. Cl.
CPC ...
401265 ; 401292 ;
Abstract
An improved writing nib for a writing instrument comprising a casing and an ink reservoir in the casing. The nib comprises an outer cylindrical wall and equiangularly spaced inner partitions which are formed integral with the wall in cantilever fashion. Each inner partition has a transverse cross section which is comprised of a plurality of partially intersected circles of different diameter.