US Patent No: D312838

Number of patents in Portfolio can not be more than 2000

Writing instrument

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ATTORNEY / AGENT: (SPONSORED)
 

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Abstract

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
PRODIR, S.A.RIVERA12

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Vitrac, Jean-Pierre Paris, FR 13 152

Cited Art

Patent Info (Count) # Cites Year
 
PENTEL KABUSHIKI KAISHA (2)
D261010 Pen or similar article 34 1979
D279993 Mechanical pencil or similar article 25 1983
 
KOH-I-NOOR RAPIDOGRAPH, INC. (1)
D286164 Writing pen 20 1984
 
REYNOLDS (1)
D288335 Writing instrument 10 1984
 
SHACHIHATA INDUSTRIAL CO., LTD. (1)
D282378 Marking pen 45 1983

Patent Citation Ranking

  • Citation Ranking not provided for expired patents

Forward Cites

Patent Info (Count) # Cites Year
 
BEIFA GROUP CO., LTD. (2)
D563469 Pen 19 2006
D591346 Pen 3 2008
 
OMX, INC. (2)
D573643 Cap for marker 3 2007
D572755 Marker and cap 7 2007
 
TOMBOW PENCIL CO., LTD. (2)
D324070 Mechanical pencil 20 1990
D335144 Writing instrument cap 16 1992
 
HIROMORI INC. (1)
D340476 Marking pen 42 1991
 
PIONEER INDUSTRIAL CORPORATION (1)
D341623 Combined writing instrument and replaceable writing tips 29 1992
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (1)
D342545 Pen 23 1992