Takahisa Hatakeyama, Makoto Yoshioka, Yuji Miyazawa: Content usage control system, content usage apparatus, computer readable recording medium with program recorded for computer to execute usage method. Fujitsu, Greer Burns & Crain, March 29, 2005: US06873975 (103 worldwide citation)

A content usage control system comprises a copyright holder system, content server, license server and user system. The ACL setting section of the copyright holder system sets a license ACL expressed as a structure by a combination of logic sums and logic products of a plurality of partial licenses ...

Koichi Hirama, Yuji Miyazawa, Haruhiko Kotake: Gas pressure sensor. Toyo Communication Equipment, Handal & Morofsky, November 3, 1987: US04703657

A gas pressure sensor comprises a contour piezoelectric vibrator and the pressure of gas is detected by measuring an equivalent series resistance of the vibrator which is surrounded by the gas whose pressure is to be detected.