Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
KS

Ken Sakamura — 43 Patents

UNUnknown: 26 patents #128 of 83,584Top 1%
NDNtt Docomo: 14 patents #207 of 1,706Top 15%
Mitsubishi Electric: 12 patents #2,296 of 25,717Top 9%
YPYokosuka Telecom Research Park: 8 patents #1 of 12Top 9%
Hitachi: 6 patents #6,585 of 28,497Top 25%
HEHitachi Micro Computer Engineering: 5 patents #10 of 393Top 3%
Kabushiki Kaisha Toshiba: 5 patents #5,724 of 229Top 2500%
TTThe University Of Tokyo: 2 patents #500 of 2,633Top 20%
PLPanafacom Limited: 1 patents #11 of 37Top 30%
Yamaha: 1 patents #1,232 of 2,001Top 65%
MDMitsubisih Denki: 1 patents #26 of 381Top 7%
HSHitachi Microcomputer System: 1 patents #104 of 257Top 45%
Tokyo, JP: #2,519 of 90,295 inventorsTop 3%
Overall (All Time): #69,380 of 4,157,543Top 2%
43 Patents All Time
Ken Sakamura has been granted 43 US patents while listed as an inventor at Unknown. The first was granted in 1982 and the most recent in April 2014. Ken Sakamura ranks #69,380 of 4,157,543 US inventors in our database (top 1.7%). Patent records list Ken Sakamura in Tokyo, JP.

Issued Patents All Time

Showing 1–25 of 43 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8688969 Cryptographic management apparatus, decryption management apparatus and program Shingo Miyazaki, Takanori Nakamizo, Akito Niwa, Koji Okada, Kouya Tochikubo +3 more 2014-04-01
8468094 Electronic value exchange system, mobile terminal, and electronic value exchange method Noboru Koshizuka, Kensaku Mori, Masayuki Terada, Kazuhiko Ishii, Sadayuki Hongo 2013-06-18 $136,000
8417964 Software module management device and program Shingo Miyazaki, Fumihiko Sano, Koji Okada, Shigeyuki Fukushima, Chiaki Ishikawa +1 more 2013-04-09
8406422 Cryptographic module management apparatus, method, and program Shingo Miyazaki, Takanori Nakamizo, Akito Niwa, Koji Okada, Kouya Tochikubo +3 more 2013-03-26
8396218 Cryptographic module distribution system, apparatus, and program Shingo Miyazaki, Takanori Nakamizo, Akito Niwa, Koji Okada, Kouya Tochikubo +3 more 2013-03-12
8370643 Cryptographic module selecting device and program Shingo Miyazaki, Takanori Nakamizo, Akito Niwa, Koji Okada, Kouya Tochikubo +3 more 2013-02-05
8306919 IC card and authentication method in electronic ticket distribution system Noboru Koshizuka, Hiroshi Aono, Kazuhiko Ishii, Kensaku Mori, Sadayuki Hongo 2012-11-06 $177,000
D668638 Antenna for wireless communication Hisanori Matsumoto, Tatsushi Morokuma 2012-10-09
D668639 Antenna for wireless communication Hisanori Matsumoto, Tatsushi Morokuma 2012-10-09
D668640 Antenna for wireless communication Hisanori Matsumoto, Tatsushi Morokuma 2012-10-09
8161499 Data processing device and data processing method Noboru Koshizuka, Masayuki Terada, Kensaku Mori, Kazuhiko Ishii, Sadayuki Hongo 2012-04-17 $224,000
8122261 Data communication apparatus and data communication method Noboru Koshizuka, Masayuki Terada, Kensaku Mori, Kazuhiko Ishii, Sadayuki Hongo 2012-02-21 $510,000
7975029 Terminal equipment Noboru Koshizuka, Masayuki Terada, Kensaku Mori, Kazuhiko Ishii, Sadayuki Hongo 2011-07-05 $176,000
7896236 Electronic value exchange system and electronic value exchange method Noboru Koshizuka, Kensaku Mori, Masayuki Terada, Kazuhiko Ishii, Sadayuki Hongo 2011-03-01 $257,000
7882030 Connection information management system for managing connection information used in communications between IC cards Noboru Koshizuka, Kazuhiko Ishii, Kensaku Mori, Hiroshi Aono, Sadayuki Hongo 2011-02-01 $253,000
7814557 IC card and access control method Noboru Koshizuka, Kazuhiko Ishii, Masayuki Terada, Kensaku Mori, Sadayuki Hongo 2010-10-12 $122,000
7580897 IC card and authentication method in electronic ticket distribution system Noboru Koshizuka, Hiroshi Aono, Kazuhiko Ishii, Kensaku Mori, Sadayuki Hongo 2009-08-25 $1,444,000
7416114 Electronic value transfer device equipped with non-contact IC interface Noboru Koshizuka, Kensaku Mori, Kazuhiko Ishii, Hiroshi Aono, Sadayuki Hongo 2008-08-26 $334,000
7403924 Communication terminal, portable terminal, circulating server, providing server, electronic book distributing method, and electronic book distributing program Noboru Koshizuka, Hiroshi Aono, Kazuhiko Ishii, Kensaku Mori, Sadayuki Hongo 2008-07-22 $634,000
7357329 IC card, terminal device, and data communication method Noboru Koshizuka, Kensaku Mori, Kazuhiko Ishii, Hiroshi Aono, Sadayuki Hongo 2008-04-15 $1,480,000
7346718 Autonomous integrated-circuit card Noboru Koshizuka, Kazuhiko Ishii, Kensaku Mori, Hiroshi Aono, Sadayuki Hongo 2008-03-18 $418,000
7340243 Connection information management system for managing connection information used in communications between IC cards Noboru Koshizuka, Kazuhiko Ishii, Kensaku Mori, Hiroshi Aono, Sadayuki Hongo 2008-03-04 $457,000
5680568 Instruction format with sequentially performable operand address extension modification 1997-10-21
5606675 Data processor for invalidating prefetched instruction or branch history information Akira Ohtsuka 1997-02-25
5434988 Data processor implementing a two's complement addressing technique Toyohiko Yoshida 1995-07-18