Naoki Shimamura — 10 Patents at Alpine Electronics

Naoki Shimamura has been granted 10 US patents while listed as an inventor at Alpine Electronics. The first was granted in 1999 and the most recent in March 2015. Naoki Shimamura ranks #481,000 of 4,157,543 US inventors in our database (top 11.6%). Patent records list Naoki Shimamura in Iwaki, JP.

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
8983104	Ring-shaped speaker having two voice coils and control member	—	2015-03-17
8358181	Substrate attenuator circuit	—	2013-01-22
8319998	Billing system capable of being connected to an output apparatus having printing function and copy function via a network server apparatus capable of being connected to an output apparatus having printing function and copy function via a network and method of billing by system capable of being connected to an output apparatus having printing function and copy function via a network	Takashi Kaneko, Hayato Sakae	2012-11-27
7957087	Servo write method and servo write system for hard-disk drive	Yasunori Nishimoto, Yoshiteru Katsumura, Hiroshi Fukuyama	2011-06-07	$121,000
7684586	Dual voice coil speaker	—	2010-03-23
7630505	Loudspeaker system	—	2009-12-08
7433487	Speaker	—	2008-10-07
7423825	Disk unit and manufacturing method thereof	Osama Takazawa, Kaoru Umemura, Kazuhiko Washizu	2008-09-09	$219,000
6158109	Coil manufacturing method using ring shaped spacer	Kei Tanabe	2000-12-12
5937076	Magnetic drive apparatus and method for manufacturing coil that forms the apparatus	Kei Tanabe	1999-08-10

Naoki Shimamura — 10 Patents

Issued Patents All Time

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