AK

Akihiro Koyama

NL Nippon Sheet Glass Company, Limited: 38 patents #3 of 836Top 1%
AV Avanstrate: 20 patents #1 of 22Top 5%
Canon: 7 patents #7,830 of 19,416Top 45%
HO Hoya: 6 patents #201 of 1,290Top 20%
KA Kao: 6 patents #545 of 3,221Top 20%
Mitsubishi Electric: 4 patents #7,099 of 25,717Top 30%
SO Sony: 2 patents #12,963 of 25,231Top 55%
OL Olympus: 2 patents #1,626 of 3,097Top 55%
FC Fuji Electric Co.: 1 patents #1,354 of 2,643Top 55%
Nissan Motor Co.: 1 patents #4,519 of 8,689Top 55%
JA Jatco: 1 patents #458 of 871Top 55%
TC Takara Co.: 1 patents #53 of 93Top 60%
TC Threebond Co.: 1 patents #61 of 172Top 40%
TC Threebond Fine Chemical Co.: 1 patents #5 of 31Top 20%
YA Yazaki: 1 patents #2,077 of 3,427Top 65%
KO Komatsu: 1 patents #1,163 of 2,087Top 60%
MA Marktec: 1 patents #2 of 6Top 35%
Overall (All Time): #19,932 of 4,157,543Top 1%
85
Patents All Time

Issued Patents All Time

Showing 51–75 of 85 patents

Patent #TitleCo-InventorsDate
7273668 Glass composition including zirconium, chemically strengthened glass article, glass substrate for magnetic recording media, and method of producing glass sheet Junji Kurachi 2007-09-25
7087307 Glass sheet and glass sheet photoelectric converter device Yukihito Nagashima, Masahiro Hirata, Akira Fujisawa 2006-08-08
7071134 High transmittance glass sheet and method of manufacturing the same Isamu Kuroda, Nobuyuki Yamamoto, Yasunori Seto 2006-07-04
6903037 High transmittance glass sheet and method of manufacturing the same Isamu Kuroda, Nobuyuki Yamamoto, Yasunori Seto 2005-06-07
6844280 Flat glass having high transmittance Isamu Kuroda, Nobuyuki Yamamoto, Yasunori Seto 2005-01-18
6831030 High transmittance glass sheet and method of manufacturing the same Isamu Kuroda, Nobuyuki Yamamoto, Yasunori Seto 2004-12-14
6771976 Radiocommunication apparatus, radiocommunication system, and radiocommunication method 2004-08-03
6713418 Glass article and glass substrate for information recording media using the same Shoichi Kishimoto, Hiroyuki Tanaka, Nobuyuki Yamamoto 2004-03-30
6705874 Colored magnetic particles for magnetophoretic display and method for manufacturing same 2004-03-16
6576353 Glass substrate for use as information recording medium and method of manufacturing such glass substrate Kazuishi Mitani, Yasuhiro Saito, Koichi Ataka, Junji Kurachi, Nobuyuki Yamamoto +1 more 2003-06-10
6550278 Method of manufacturing glass substrate for use as information recording medium Kazuishi Mitani, Yasuhiro Saito, Koichi Ataka, Junji Kurachi, Nobuyuki Yamamoto +1 more 2003-04-22
6547980 Glass substrate for information recording medium, manufacturing method thereof, and information recording medium Junji Kurachi, Nobuyuki Yamamoto, Yasuhiro Saito, Kazuishi Mitani, Koichi Ataka +1 more 2003-04-15
6461736 Light-colored glass of high transmittance and method for production thereof, glass plate with electrically conductive film and method for production thereof, and glass article Yukihito Nagashima, Isamu Kuroda, Masahiro Hirata, Masato Hyodo, Koichiro Nakamura 2002-10-08
6451720 Glass composition, and information recording medium substrate, information recording medium, and information recording device each comprising the composition Shoichi Kishimoto, Hiroyuki Tanaka 2002-09-17
6440531 Hydrofluoric acid etched substrate for information recording medium Junji Kurachi, Nobuyuki Yamamoto, Yasuhiro Saito, Kazuishi Mitani, Koichi Ataka +1 more 2002-08-27
6413892 Glass substrate for magnetic recording media Nobuyuki Yamamoto 2002-07-02
6399527 Glass composition and substrate for information recording medium Shoichi Kishimoto, Junji Kurachi, Nobuyuki Yamamoto 2002-06-04
6376084 Glass-ceramics, process for producing the same, and substrate for information recording medium, information recording medium and information recording device each using the glass-ceramics Shoichi Kishimoto, Hiroyuki Tanaka 2002-04-23
6376403 Glass composition and process for producing the same Shoichi Kishimoto, Junji Kurachi, Nobuyuki Yamamoto 2002-04-23
6365534 Glass composition and substrate for information recording media comprising the same Shoichi Kishimoto, Junji Kurachi, Nobuyuki Yamamoto 2002-04-02
6340647 Glass composition and substrate for information recording media comprising the same Shoichi Kishimoto, Junji Kurachi, Nobuyuki Yamamoto 2002-01-22
6333286 Glass composition and substrate for information recording media comprising the same Junji Kurachi, Shoichi Kishimoto, Nobuyuki Yamamoto 2001-12-25
6306786 Glass composition and process for producing the same Shoichi Kishimoto, Junji Kurachi, Nobuyuki Yamamoto 2001-10-23
6251812 Glass composition and substrate for information recording media comprising the same Shoichi Kishimoto, Junji Kurachi, Nobuyuki Yamamoto 2001-06-26
6132843 Glass substrate for magnetic disks Yasunao Kuroda, Yoshihiro Matsuno, Shinya Katayama, Jyunji Kurachi 2000-10-17