Ballpoint pen
United States Patent D378601

Sakuno, Makoto (Tokyo, JP)
Application Number:
Publication Date:
Filing Date:
Kabushiki Kaisha Pilot (Tokyo, JP)
Primary Class:
Other Classes:
401/6, 401/88, D19/908, D19/916, D19/923
Field of Search:
D19/35, D19/36, D19/41-51, D19/53-58, D19/81-85, 401/99, 401/100, 401/103, 401/104, 401/6, 401/7, 401/88, 401/209
View Patent Images:
US Patent References:
D368738PencilApril, 1996OsadaD19/51
D367076Ballpoint penFebruary, 1996GaciaD19/51
D366498Ball point penJanuary, 1996AbeD19/51
D364424Writing instrumentNovember, 1995ShimizuD19/51
D363084Writing instrumentOctober, 1995HollingtonD19/51
D358842Writing instrument with light assemblyMay, 1995ShiauD19/51
D356598PenMarch, 1995ThompsonD19/51
D355673Writing instrumentFebruary, 1995TakahashiD19/48
D338038Ball point penAugust, 1993OkaD19/48
D269189Mechanical pencil or similar articleMay, 1983SakaokaD19/48

Primary Examiner:
Attorney, Agent or Firm:
KANESAKA BERNER AND PARTNERS LLP (2318 Mill Road Suite 1400, ALEXANDRIA, VA, 22314-2848, US)
1. The ornamental design for a ballpoint pen, as shown and described.


FIG. 1 is a front elevational view of a ballpoint pen showing my new design, with the writing tip in the retracted position;

FIG. 2 is a rear view thereof;

FIG. 3 is a right side view thereof, the left side view being symmetrical to the right side view;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right side view thereof with the writing tip in the extended position;

FIG. 7 is a magnified cross sectional view taken along line 7--7 in FIG. 1; and,

FIG. 8 is a magnified cross sectional view taken along line 8--8 in FIG. 1.