Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
TK

Tadayoshi Kosaka

Fujitsu Limited: 11 patents #2,845 of 24,456Top 15%
Hitachi: 9 patents #4,653 of 28,497Top 20%
FLFujitsu Hitachi Plasma Display Limited: 7 patents #23 of 166Top 15%
HCHitachi Consumer Electronics Co.: 5 patents #43 of 447Top 10%
HCHitachi Plasma Patent Licensing Co.: 4 patents #5 of 52Top 10%
HAHitachi Appliances: 1 patents #56 of 109Top 55%
HMHitachi Maxell: 1 patents #659 of 1,211Top 55%
HSHitachi Transport System: 1 patents #10 of 40Top 25%
Overall (All Time): #97,982 of 4,157,543Top 3%
35 Patents All Time

Issued Patents All Time

Showing 26–35 of 35 patents

Patent #TitleCo-InventorsDate
6888310 Plasma display panel with dielectric layer containing a filler of mica coated with titanium dioxide Shinji Tadaki, Noriyuki Awaji, Fumihiro Namiki, Katsuya Irie, Hideki Harada 2005-05-03
6855026 Method for forming partitions of plasma display panel by using sandblasting process Akihiro Fujinaga, Kazunori Ishizuka, Tatsutoshi Kanae, Kazuhide Iwasaki, Toshiyuki Nanto +5 more 2005-02-15
6727869 Display panel and its driving method 2004-04-27
6489722 Plasma display panel Kenji Yoshida, Takeo Masuda 2002-12-03
6376986 Plasma display panel Kazushige Takagi, Fumihiro Namiki 2002-04-23
6236159 Gas discharge panel having gas flow barriers and evacuation method thereof Kazunori Inoue, Fumihiro Namiki, Keiichi Betsui, Shinya Fukuta 2001-05-22
6048243 Method of forming barrier ribs of display panel Fumihiro Namiki, Osamu Toyoda, Keiichi Betsui, Akira Tokai 2000-04-11
6039622 Method of forming barrier ribs of display panel Osamu Toyoda, Fumihiro Namiki 2000-03-21
5967872 Method for fabrication of a plasma display panel Keiichi Betsui, Shin'ya Fukuta, Fumihiro Namiki, Osamu Toyoda, Shigeo Kasahara 1999-10-19
5825128 Plasma display panel with undulating separator walls Keiichi Betsui, Shin'ya Fukuta, Fumihiro Namiki, Osamu Toyoda, Shigeo Kasahara 1998-10-20