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 1–25 of 51 patents

Patent #TitleCo-InventorsDate
11192990 Resin molded body and method for producing resin molded body Masayuki Kyomoto 2021-12-07
11111367 Resin molded body and method for producing resin molded body Masayuki Kyomoto 2021-09-07
11015078 Surface treatment agent, surface treatment method, surface treatment base material, and surface treatment base material production method Yoshihiro Kiritoshi 2021-05-25
10927206 Copolymer and application therefor Masaru Matsuda, Tomozumi Noda, Satoshi Yamada, Nobuyuki Sakamoto 2021-02-23
10829710 Slipperiness-imparting agent and slipperiness-imparting method Tomozumi Noda, Masaru Matsuda, Satoshi Yamada, Nobuyuki Sakamoto 2020-11-10
10323132 Polymer and crosslinked body thereof Yuuki Inoue, Kyoko Fukazawa, Masaru Matsuda, Satoshi Yamada, Tomozumi Noda 2019-06-18
10030283 Method for producing surface-treated steel sheet for battery containers Shinichirou HORIE, Koh Yoshioka 2018-07-24
9887396 Surface-treated steel sheet for battery containers, battery container, and battery Koh Yoshioka, Shinichirou HORIE 2018-02-06
9216241 Medical device and method for producing the same Masayuki Kyomoto, Kozo Nakamura, Yoshio Takatori, Hiroshi Kawaguchi, Toru Moro 2015-12-22
9192694 Biocompatible and low-abrasion member, and artificial joint using the same and method of producing the same Masayuki Kyomoto, Kozo Nakamura, Yoshio Takatori, Hiroshi Kawaguchi, Toru Moro 2015-11-24
9175035 Oligopeptide sequence specifically bonding to phenylboronic acid group Tomohiro Konno, Hirokazu Nishida 2015-11-03
9138511 Bioabsorbable blend for temporary scaffolding of the blood vessel wall Hyung-il Kim 2015-09-22
9044323 High wear-resistant bearing material and artificial joint replacement using the same Masayuki Kyomoto, Toru Moro, Tomohiro Konno, Kozo Nakamura, Yoshio Takatori +6 more 2015-06-02
9034414 Biomaterial, joint prosthesis using the biomaterial and method of producing the same Masayuki Kyomoto, Yasuhiko Iwasaki, Toru Moro, Kozo Nakamura, Yoshio Takatori +3 more 2015-05-19
8795841 Graft polymerization method and product obtained thereby Masayuki Kyomoto 2014-08-05
8772368 Bioabsorbable blend for temporary scaffolding of the blood vessel wall Hyung-il Kim 2014-07-08
8765265 Polymer sliding material, artificial joint member, medical appliance, and manufacturing method therefor Masayuki Kyomoto 2014-07-01
8697238 Biomaterial, joint prosthesis using the biomaterial and method of producing the same Masayuki Kyomoto, Yasuhiko Iwasaki, Toru Moro, Kozo Nakamura, Yoshio Takatori +3 more 2014-04-15
8575229 Bioabsorbable blend for temporary scaffolding of the blood vessel wall Hyung-il Kim 2013-11-05
8551332 Affinity particle and affinity separation method Katsuyuki Maeno, Kazuyuki Miyazawa, Akira Ishikubo 2013-10-08
8318865 Eye lens material and method of manufacturing thereof Yukimitsu Suda, Kazuyuki Miyazawa 2012-11-27
8277834 Method for producing protein adsorption-preventing ocular lens material Yukimitsu Suda, Kazuyuki Miyazawa 2012-10-02
8236873 Method of manufacturing protein adsorption preventing eye lens material Yukimitsu Suda, Kazuyuki Miyazawa 2012-08-07
8063238 Diamine compound having phosphorylcholine group, polymer thereof, and process for producing the polymer Yu Nagase, Naoya Shimoyamada, Yasuhiko Iwasaki 2011-11-22
7785372 Artificial joint member with grafted polymer surface Toru Moro, Kozo Nakamura, Yoshio Takatori, Hiroshi Kawaguchi, Tomohiro Konno +2 more 2010-08-31