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Manabu Kai, Yasuyuki Oishi, Toru Maniwa, Hiroyuki Hayashi, Andrey Andrenko: Radio tag antenna structure for an optical recording medium and a case for an optical recording medium with a radio tag antenna. Fujitsu, Katten Muchin Rosenman, July 24, 2007: US07248221 (126 worldwide citation)

An antenna comprises a dielectric member, an antenna pattern formed on one surface of the dielectric member, and a ground pattern formed on the other surface of the dielectric member. A part or the whole of the antenna is implanted in a dielectric layer on the side from which a laser beam does not c ...


2
Yasuyuki Oishi, Takeshi Takano, Takaharu Nakamura, Yukio Takeda, Yasunobu Watanabe: FSK demodulation circuit. Fujitsu, Staas & Halsey, September 26, 1989: US04870659 (95 worldwide citation)

An FSK demodulation circuit which receives as input an FSK modulated reception signal, obtains two quadrature pulse trains, i.e., a first pulse train and a second pulse train, from a phase detection circuit, is provided with at least two sampling means which use the edge of one of the pulse trains a ...


3
Yasuyuki Oishi, Kazuo Nagatani, Hidenobu Fukumasa, Hajime Hamada, Yoshihiko Asano: SIR or SNR measurement apparatus. Fujitsu, Helfgott & Karas PC, February 22, 2000: US06028894 (75 worldwide citation)

SIR measurement for measuring S/N ratio, which is the ratio of a desired signal power to noise power, or S/I ratio, which is the ratio of desired signal power to interference signal power, uses a signal-point position altering unit for taking absolute values of an I component (in-phase component) an ...


4
Kazuo Nagatani, Tokuro Kubo, Takayoshi Ode, Yasuyuki Oishi: Distortion compensating apparatus. Fujitsu, Katten Muchin Zavis Rosenman, December 28, 2004: US06836517 (66 worldwide citation)

A distortion compensating apparatus for compensating for a distortion of a transmission power amplifier. A delay time decision unit calculates the correlation between a transmission signal and a feedback signal fed back from the output side of the transmission power amplifier while varying phase dif ...


5
Kazuo Nagatani, Yasuyuki Oishi, Hidenobu Fukumasa, Hajime Hamada, Yoshihiko Asano: Code multiplexing transmitting apparatus. Fujitsu, Helfgott & Karas PC, August 1, 2000: US06097714 (44 worldwide citation)

A code multiplexing transmitting apparatus spread-spectrum modulates transmission data of a plurality of channels by spreading codes that differ from one another, combines the spread-spectrum signals of each of the channels and transmits the resultant spread-spectrum modulated signal. A spread-spect ...


6
Takeshi Takano, Yasuyuki Oishi, Eisuke Fukuda, Hideto Furukawa, Kazuo Nagatani: Amplifier having distortion compensation and base station for radio communication using the same. Fujitsu, Helfgott & Karas P C, February 9, 1999: US05870668 (41 worldwide citation)

A amplifier having distortion compensation is employed as a power amplifier for amplifying a linear modulated signal or a low noise amplifier for amplifying a linear modulated signal. The amplifier having distortion compenssation includes an amplifier circuit for amplifying an input signal; an error ...


7
Kazuo Nagatani, Yasuyuki Oishi, Hidenobu Fukumasa, Hajime Hamada, Yoshihiko Asano: Code multiplexing transmitting apparatus. Fujitsu, Katten Muchin Zavis Rosenman, November 30, 2004: US06826169 (41 worldwide citation)

A code multiplexing transmitting apparatus spread-spectrum modulates transmission data of a plurality of channels by spreading codes that differ from one another, combines the spread-spectrum signals of each of the channels and transmits the resultant spread-spectrum modulated signal. A spread-spect ...


8
Yasuyuki Oishi, Akira Inoue: Catalyst for hydrotreating heavy hydrocarbon oils and a method of preparing the catalyst. Nippon Oil, Petroleum Energy Center Foundation, Bucknam and Archer, August 29, 1989: US04861746 (38 worldwide citation)

A catalyst for hydrotreating a heavy hydrocarbon oil which comprises a porous refractory inorganic oxide carrier component and at least one hydrogenating active metal component selected from nickel, cobalt and the like, the metal component concentration in the cross-section of the catalyst being the ...


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Yasuyuki Oishi, Kazuo Nagatani, Hidenobu Fukumasa, Hajime Hamada, Yoshihiko Asano: Code multiplexing wireless apparatus. Fujitsu, Helfgott & Karas P C, December 28, 1999: US06009090 (29 worldwide citation)

A code multiplexing wireless apparatus for amplifying a code-multiplexed signal and then transmitting the amplified signal includes the following to reduce output back-off, improve the efficiency of a power amplifier and suppress broadening of the frequency spectrum: (1) a code-multiplexed signal ge ...