Patents by Inventor Seiji Fukushima

Seiji Fukushima has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Optical Transmission System
    Publication number: 20080226298
    Abstract: The present invention has been achieved to provide a novel optical transmission system realizing high-speed optical transmission over greater distance by suppressing waveform degradation caused by mode dispersion and mode transition in a multimode optical transmission line. The optical transmission system of the present invention includes: an optical transmitter for transmitting incoherent light; an excitation mechanism for exciting a predetermined mode in the incoherent light transmitted from the optical transmitter; a multimode optical transmission line for transmitting the incoherent light transmitted from the excitation mechanism; a transmission mechanism for transmitting a predetermined mode in the incoherent light transmitted from the excitation mechanism; and an optical receiver for receiving the incoherent light transmitted from the transmission mechanism or the incoherent light transmitted from the transmission mechanism.
    Type: Application
    Filed: September 16, 2004
    Publication date: September 18, 2008
    Applicants: Nippon Telegraph and Telephone Corporation, NTT Electronics Corporation
    Inventors: Hiroyuki Fukuyama, Toshihiro Itoh, Satoshi Tunashima, Kimikazu Sano, Koichi Murata, Yohtaro Umeda, Yasuo Tazoh, Hirohiko Sugahara, Hiromu Toba, Masahiro Muraguchi, Senichi Suzuki, Seiji Fukushima, Yoshinori Hibino, Tadashi Sakamoto, Yoshiaki Yamabayashi, Eiji Yoshida, Ryuichi Iwamoto
  • Cell strainer cap
    Patent number: 5711875
    Abstract: A cell strainer assembly useful for filtering and collecting suspensions for use in immunological studies and more particularly in flow cytometry procedures. The assembly comprises a container and a cap with means for filtering and collecting a suspension.
    Type: Grant
    Filed: December 11, 1996
    Date of Patent: January 27, 1998
    Assignee: Becton Dickinson and Company
    Inventors: John J. Kayal, Seiji Fukushima, Thomas Fleming
  • Cell strainer assembly and method of use
    Patent number: 5601728
    Abstract: A cell strainer assembly useful for filtering and collecting suspensions for use in immunological studies and more particularly in flow cytometry procedures. The assembly comprises a container and a cap with means for filtering and collecting a suspension.
    Type: Grant
    Filed: November 30, 1995
    Date of Patent: February 11, 1997
    Assignee: Becton, Dickinson and Company
    Inventors: John J. Kayal, Seiji Fukushima, Thomas Fleming
  • Cell strainer assembly and method of use
    Patent number: 5518612
    Abstract: A cell strainer assembly useful for filtering and collecting suspensions for use in immunological studies and more particularly in flow cytometry procedures. The assembly comprises a container and a cap with means for filtering and collecting a suspension and with means for removably securing the cap and the container.
    Type: Grant
    Filed: August 30, 1994
    Date of Patent: May 21, 1996
    Assignee: Becton, Dickinson and Company
    Inventors: John J. Kayal, Seiji Fukushima, Thomas Fleming
  • Spatial light modulator and spatial light modulating apparatus with alignment film having particular conductance
    Patent number: 5130830
    Abstract: A spatial light modulator has a photoconductive layer deposited on one glass substrate having a transparent electrode. A first liquid crystal alignment film is formed on the photoconductive layer. A second liquid crystal alignment film is formed on another glass substrate having another transparent electrode. A ferroelectric liquid crystal is filled between the first and second liquid crystal alignment films.
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: July 14, 1992
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Seiji Fukushima, Takashi Kurokawa, Takashi Kozawaguchi, Shinji Matsuo
  • Vulcanization apparatus for a continuous length of article of rubber, plastics or the like material
    Patent number: 4179256
    Abstract: A vulcanization apparatus for a continuous length of article comprises a curved vulcanizing pipe devised to ensure, with the aid of a heating liquid medium recirculation system assembled thereto, a stable and even vulcanization of such a continuous length of article without damaging the same, a tubular cleaner for removing the heating liquid medium deposited on said continuous length of article and a cooling pipe, said vulcanizing pipe, tubular cleaner and cooling pipe being connected together in the cited sequence, without a provision of any spacious separating means or sealing means therebetween, in an arrangement in which a mutual ingression between the heating liquid and cleaning and/or cooling medium can be prevented from and in which the economy can be improved in cost as well as in space while ensuring safety.
    Type: Grant
    Filed: August 15, 1978
    Date of Patent: December 18, 1979
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Shoji Tomioka, Toshiaki Nakao, Hisatsugu Nakamura, Nobuyoshi Mine, Katsuo Yamamoto, Seiji Fukushima, Akira Nogami