1
Ryota Akiyama, Takayuki Hasebe: Electronic cashless transaction system. Fujitsu, Nikaido Marmelstein Murray & Oram, July 23, 1996: US05539825 (235 worldwide citation)

A key control method is for use in an electronic cashless transaction system including at least a bank center, a store transaction terminal and an IC card being used as an electronic cashless transaction medium. The key control method comprises a step of having the bank center generate and code a fi ...


2
Takayuki Hasebe, Ryota Akiyama, Makoto Yoshioka: Electronic data protection system. Fujitsu, Nikaido Marmelstein Murray & Oram, February 21, 1995: US05392351 (205 worldwide citation)

An electronic data protection system for protecting electronic data from illegal copying by a third party, includes: a storage medium for storing an encrypted electronic data, a medium number and encrypted permission information; a vendor computer having a personal key generating unit for generating ...


3
Ryota Akiyama, Takayuki Hasebe: Electronic cashless transaction system. Fujitsu, Nikaido Marmelstein Murray & Oram, June 27, 1995: US05428684 (151 worldwide citation)

A key control method is for use in an electronic cashless transaction system including at least a bank center, a store transaction terminal and an IC card being used as an electronic cashless transaction medium. The key control method comprises a step of having the bank center generate and code a fi ...


4
Ryota Akiyama, Takayuki Hasebe, Makoto Yoshioka: Information distribution system wherein storage medium storing ciphered information is distributed. Fujitsu, Staas & Halsey, April 7, 1998: US05737413 (95 worldwide citation)

A system for use when distributing information stored in a piece of storage medium from a supplier to users through a distributor(s). The information is ciphered when stored in each piece of storage medium in a supplier apparatus. In addition, ciphered key information may be stored in the piece of s ...


5
Takayuki Hasebe, Ryota Akiyama, Makoto Yoshioka: Storage medium for preventing an irregular use by a third party. Fujitsu, Nikaido Marmelstein Murray & Oram, August 18, 1998: US05796824 (90 worldwide citation)

A storage medium stores encrypted electronic data, a medium personal number which is unique for each storage medium and encrypted permission information. At least the medium personal number is written onto the storage medium in an un-rewritable form which a user computer cannot rewrite.


6
Takayuki Hasebe, Ryota Akiyama, Makoto Yoshioka: Storage medium for preventing an illegal use by a third party. Fujitsu, Nikaido Marmelstein Murray & Oram, September 10, 1996: US05555304 (60 worldwide citation)

A storage medium stores encrypted electronic data, a medium personal number which is unique for each storage medium and encrypted permission information. At least the medium personal number is written onto the storage medium in an un-rewritable form which a user computer cannot rewrite.


7
Yoshihiro Hori, Toshiaki Hioki, Miwa Kanamori, Takatoshi Yoshikawa, Hiroshi Takemura, Takayuki Hasebe, Takahisa Hatakeyama, Tadaaki Tonegawa, Takeaki Anazawa: Device for reproducing data. Sanyo Electric, Fujitsu, Westerman Hattori Daniels & Adrian, May 24, 2005: US06898708 (51 worldwide citation)

A cellular phone (100) stores encrypted content data and encrypted license key distributed thereto in a memory card (110). The cellular phone (100) and the memory card (110) collectively perform a part of mutual authentication processing upon power-on. The encrypted license key (Kc) read from the me ...


8
Masahiko Takenaka, Naoya Torii, Takayuki Hasebe, Ryota Akiyama: Modular arithmetic operation system. Fujitsu, Nikaido Marmelstein Murray & Oram, March 12, 1996: US05499299 (47 worldwide citation)

A modular arithmetic unit comprises an input register, a multiple computing section, an adder, and a correcting section. There is provided a multiple table in which multiples of a modulo N are stored to correspond with low-order some bits of an input number T in the input register. The low-order som ...


9
Takayuki Hasebe, Naoya Torii, Noboru Iwayama, Masahiko Takenaka, Masahiro Matsuda: Software charging system and software data utilization permitting device. Fujitsu, Staas & Halsey, June 2, 1998: US05761651 (46 worldwide citation)

A software charging system includes a utilization permitting device for giving permission to use a software storing medium storing ciphered programs or data (software); and an authorization center capable of communicating with the utilization permitting device for setting a utilizable amount, totall ...


10
Takayuki Hasebe, Naoya Torii: Licensee notification system. Fujitsu, Staas & Halsey, August 10, 1999: US05935243 (43 worldwide citation)

There is disclosed a licensee notification system for implementing a software sales system wherein license information for converting to executable form software that is presented to a user in non-executable form is communicated to the user from a management center on condition of payment of a charg ...