KK

Keiji Koga

Tdk: 37 patents #84 of 3,796Top 3%
JS Japan Climate Systems: 3 patents #12 of 42Top 30%
Overall (All Time): #76,936 of 4,157,543Top 2%
41
Patents All Time

Issued Patents All Time

Showing 25 most recent of 41 patents

Patent #TitleCo-InventorsDate
7991377 Mixer and frequency converting apparatus Yuji Kakinuma 2011-08-02
7973375 Spin transistor and method of manufacturing same 2011-07-05
7942192 Vehicle air conditioner Takehiro Yamamoto, Tadashi Okamoto, Hideaki Yasuda, Hiroshi Mayumi, Morihito Tsukuda +2 more 2011-05-17
7886814 Vehicle air conditioner Takehiro Yamamoto, Tadashi Okamoto, Hideaki Yasuda, Hiroshi Mayumi, Morihito Tsukuda +2 more 2011-02-15
7825658 Magnetic device and frequency detector Yuji Kakinuma, Daisuke Miyauchi 2010-11-02
7808229 Magnetic device and frequency analyzer Yuji Kakinuma 2010-10-05
7796419 Magnetic memory 2010-09-14
7697323 Magnetic storage device Katsumichi Tagami, Tohru Oikawa 2010-04-13
7683446 Magnetic memory using spin injection flux reversal 2010-03-23
7649766 Magnetic storage device Katsumichi Tagami, Tohru Oikawa 2010-01-19
7613033 Magnetic storage device Katsumichi Tagami, Tohru Oiakawa 2009-11-03
7535757 Magnetic memory 2009-05-19
7522450 Magnetic storage cell, magnetic memory device and magnetic memory device manufacturing method Joichiro Ezaki, Yuji Kakinuma, Susumu Haratani 2009-04-21
7470964 Magnetic memory and manufacturing method thereof 2008-12-30
7471550 Magnetic memory 2008-12-30
7342822 Magnetic memory device, write current driver circuit and write current driving method Joichiro Ezaki, Yuji Kakinuma, Shigekazu Sumita 2008-03-11
7295460 Magnetic memory cell, magnetic memory device, and method of manufacturing magnetic memory device Joichiro Ezaki, Yuji Kakinuma 2007-11-13
7277320 Magnetic memory device, sense amplifier circuit and method of reading from magnetic memory device Joichiro Ezaki, Yuji Kakinuma, Shigekazu Sumita 2007-10-02
7230843 Magnetic memory device and writing method of the same Joichiro Ezaki, Yuji Kakinuma, Shigekazu Sumita 2007-06-12
7227771 Magnetoresistive effect element and magnetic memory device Joichiro Ezaki, Yuji Kakinuma 2007-06-05
7209380 Magnetic memory device and method of reading the same Joichiro Ezaki, Yuji Kakinuma, Shigekazu Sumita 2007-04-24
7100675 Air conditioner for vehicle Takehiro Yamamoto, Tadashi Okamoto, Hideaki Yasuda, Hiroshi Mayumi, Morihito Tsukuda +2 more 2006-09-05
7016221 Magnetoresistive effect element, magnetic memory device and method of fabricating the same Joichiro Ezaki, Yuji Kakinuma 2006-03-21
6996001 Magnetic memory device, write current drive circuit, and write current drive method Joichiro Ezaki, Yuji Kakinuma 2006-02-07
6930911 Magnetic memory device, method for writing on the same and method for reading from the same Joichiro Ezaki, Yuji Kakinuma 2005-08-16