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

Kazuhiko Ishihara

UNUnknown: 24 patents #145 of 83,584Top 1%
TTThe University Of Tokyo: 13 patents #39 of 2,633Top 2%
NONof: 12 patents #8 of 561Top 2%
KMKyocera Medical: 6 patents #2 of 30Top 7%
MIMitsui Petrochemical Industries: 4 patents #170 of 1,024Top 20%
SLShiseido Company, Limited: 4 patents #179 of 1,112Top 20%
SCSuntec Co.: 3 patents #13 of 57Top 25%
JTJapan Science And Technology: 3 patents #43 of 836Top 6%
MEMedtronic: 2 patents #3,096 of 6,325Top 50%
DCDai-Ichi Kogyo Seiyaku Co.: 2 patents #87 of 288Top 35%
Kyocera: 2 patents #1,365 of 3,732Top 40%
SCSagami Chemical Research Center: 2 patents #73 of 312Top 25%
SESeiko Epson: 2 patents #4,555 of 7,774Top 60%
TCToyo Kohan Co.: 2 patents #100 of 295Top 35%
KSKobe Steel: 1 patents #857 of 2,031Top 45%
JMJapan Medical Materials: 1 patents #1 of 12Top 9%
HIHitachi: 1 patents #17,742 of 28,497Top 65%
TUTokai University: 1 patents #3 of 41Top 8%
TSTokai University Educational System: 1 patents #30 of 138Top 25%
TUTokyo Medical And Dental University: 1 patents #10 of 27Top 40%
PEPentax: 1 patents #515 of 761Top 70%
UIUbe Industries: 1 patents #895 of 1,686Top 55%
KKKanto Kagaku: 1 patents #73 of 181Top 45%
BLBiocompatibles Limited: 1 patents #22 of 39Top 60%
WIWako Pure Chemical Industries: 1 patents #164 of 377Top 45%
Overall (All Time): #52,653 of 4,157,543Top 2%
51 Patents All Time

Issued Patents All Time

Showing 26–50 of 51 patents

Patent #TitleCo-InventorsDate
7438860 Droplet discharging head and microarray manufacturing method Fumio Takagi 2008-10-21
7378538 Compound having phosphorylcholine group, polymer thereof and process for producing the same Yu Nagase, Masataka Oku, Yasuhiko Iwasaki 2008-05-27
7368252 Agglutination accelerator for immunological measurement Kyoichi Sumida, Koji Wada 2008-05-06
7323224 Liquid dispense method and microarray manufacturing method Fumio Takagi 2008-01-29
7108787 Modified hollow-fiber membrane Nobuo Nakabayashi, Shinji Miyazaki, Kazuo Imamura, Ken Suzuki, Koji Kamenosono 2006-09-19
6828028 Medical materials and process for producing the same Hiroki Fukui, Ken Suzuki, Kenshiro Shuto, Nobuyuki Yamamoto, Nobuo Nakabayashi 2004-12-07
6706260 Wound-covering preparation, wound-covering material, and method of wound healing Shinji Tanaka, Ken Suzuki, Kenshiro Shuto, Akio Hayashi, Nobuo Nakabayashi 2004-03-16
6270788 Implantable medical device Edouard Koulik, Larik Vincent, Patrick Cahalan, Eric J. Fogt, Nobuo Nakabayashi 2001-08-07
6258371 Method for making biocompatible medical article Edouard Koulik, Larik Vincent, Patrick Cahalan, Eric J. Fogt, Nobuo Nakabayashi 2001-07-10
6214957 Solubilizers, emulsifiers and dispersants Daijiro Shiino, Kazunori Waki, Nobuo Nakabayashi 2001-04-10
6204324 Method for producing aqueous solution of polymer having phosphorylcholine groups Kenshiro Shuto, Kazuo Matsuyama, Nobuo Nakabayashi 2001-03-20
5977257 Polymer material, medical material and liquid high molecular composition Kazunori Waki, Daijiro Shiino, Kazuo Matsuyama, Nobuo Nakabayashi 1999-11-02
5658561 Method of producing anti-thrombogenic material and material produced thereby Nobuo Nakabayashi 1997-08-19
5629361 Emulsion of polymer having (meth)acrylate unit and adhesive compositions containing the emulsion for dentine Nobuo Nakabayashi, Yasukazu Saimi 1997-05-13
5576182 Anti-mucus glycoprotein monoclonal antibody Makoto Kurihara, Kyoko Hotta, Hiromi Tanaka, Shiro Shimauchi 1996-11-19
5554669 Emulsion of polymer having (meth)acrylate unit and adhesive compositions containing the emulsion Nobuo Nakabayashi, Yasukazu Saimi 1996-09-10
5466853 Diester monomer, its polymer, water-containing soft contact lens, and processing solution for contact lens Yasumi Koinuma, Takeo Matsumoto, Nobuharu Nakada, Nobuo Nakabayashi 1995-11-14
5461433 Highly hydrous soft contact lens and a treating solution for contact lenses Nobuo Nakabayashi, Yoshishige Murata, Nobuharu Nakada, Takeo Matsumoto, Yasumi Koinuma 1995-10-24
5368733 Water-soluble cellulose derivative and biocompatible material Nobuo Nakabayashi 1994-11-29
5264215 Bone cement composition, cured product thereof, implant material and process for the preparation of the same Nobuo Nakabayashi, Takashi Yamamoto 1993-11-23
5243006 Acrylic copolymer Nobuo Nakabayashi, Takashi Yamamoto, Toru Kinoshita 1993-09-07
5171588 Method for modulating the sedimentation rate of piscicultural dry pellets and product thereof Jun Kawaguchi 1992-12-15
5064446 Method of preparing high purity light gas by multiple-step gas separation Yoshihiro Kusuki 1991-11-12
4933412 Method of imparting flame resistance to polyester fiber substrates Etsuo Ito, Masanari Matsumura, Toshiaki Doyama 1990-06-12
4758348 Copolymer, separating membrane made thereof and method for separating charge transfer interactive substance from a liquid mixture containing the same Kiyohide Matsui, Isao Shinohara, Hiroyuki Nishide, Rieko Kogure 1988-07-19