Keiichi Ookawa — 9 Patents at Hitachi Tohbu Semiconductor

Keiichi Ookawa has been granted 9 US patents while listed as an inventor at Hitachi Tohbu Semiconductor. The first was granted in 2004 and the most recent in August 2014. Keiichi Ookawa ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Keiichi Ookawa in Takasaki, JP.

Patents per Year

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
8816411	Mosfet package	Ryoichi Kajiwara, Masahiro Koizumi, Toshiak Morita, Kazuya Takahashi, Munehisa Kishimoto +5 more	2014-08-26
8455986	Mosfet package	Ryoichi Kajiwara, Masahiro Koizumi, Toshiaki Morita, Kazuya Takahashi, Munehisa Kishimoto +5 more	2013-06-04
8183607	Semiconductor device	Ryoichi Kajiwara, Masahiro Koizumi, Toshiaki Morita, Kazuya Takahashi, Munehisa Kishimoto +5 more	2012-05-22
7985991	MOSFET package	Ryoichi Kajiwara, Masahiro Koizumi, Toshiaki Morita, Kazuya Takahashi, Munehisa Kishimoto +5 more	2011-07-26	$228,000
7400002	MOSFET package	Ryoichi Kajiwara, Masahiro Koizumi, Toshiaki Morita, Kazuya Takahashi, Munehisa Kishimoto +5 more	2008-07-15	$328,000
7394146	MOSFET package	Ryoichi Kajiwara, Masahiro Koizumi, Toshiaki Morita, Kazuya Takahashi, Munehisa Kishimoto +5 more	2008-07-01	$263,000
7342267	MOSFET package	Ryoichi Kajiwara, Masahiro Koizumi, Toshiaki Morita, Kazuya Takahashi, Munehisa Kishimoto +5 more	2008-03-11	$214,000
7332757	MOSFET package	Ryoichi Kajiwara, Masahiro Koizumi, Toshiaki Morita, Kazuya Takahashi, Munehisa Kishimoto +5 more	2008-02-19	$177,000
6774466	Semiconductor device	Ryoichi Kajiwara, Masahiro Koizumi, Toshiaki Morita, Kazuya Takahashi, Munehisa Kishimoto +5 more	2004-08-10	$174,000