TS

Tomoaki Shibata

PK Pentel Kabushiki Kaisha: 29 patents #3 of 170Top 2%
HC Hitachi Chemical Company: 17 patents #55 of 1,946Top 3%
NS Nippon Steel: 3 patents #914 of 4,423Top 25%
Brother Kogyo: 3 patents #1,626 of 2,767Top 60%
JS Jfe Steel: 3 patents #450 of 1,401Top 35%
RE Resonac: 3 patents #53 of 474Top 15%
SC Showa Denko Materials Co.: 2 patents #64 of 270Top 25%
NC Nippon Steel Engineering Co.: 2 patents #12 of 107Top 15%
HI Hitachi: 1 patents #17,742 of 28,497Top 65%
Overall (All Time): #37,349 of 4,157,543Top 1%
61
Patents All Time

Issued Patents All Time

Showing 51–61 of 61 patents

Patent #TitleCo-InventorsDate
D562895 Ballpoint pen 2008-02-26
D542350 Ballpoint pen 2007-05-08
D535698 Cap for writing instrument 2007-01-23
D522580 Marking pen 2006-06-06
D520059 Mechanical pencil 2006-05-02
D512099 Mechanical pencil 2005-11-29
D510599 Cap for writing instrument 2005-10-11
D507811 Ball point pen Keitaro Tsuboki 2005-07-26
D504465 Cap for a writing instrument Keitaro Tsuboki 2005-04-26
6868210 Optical waveguide and their application of the optical communication system Makoto Takahashi, Tatemi Ido, Hirohisa Sano 2005-03-15
D499137 Marking pen 2004-11-30