Patents by Inventor Shinya Sasaki

Shinya Sasaki 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).

  • Publication number: 20090223448
    Abstract: A substrate processing apparatus of the present invention comprises: a processing chamber for storing and processing substrates stacked in multiple stages in horizontal posture; a processing gas supply unit for supplying two or more types of the processing gases to the inside of the processing chamber; an inactive gas supply unit for supplying an inactive gas to the inside of the processing chamber; and an exhaust unit for exhausting an atmosphere of the inside of the processing chamber, wherein the processing gas supply unit has at least two processing gas supply nozzles which extend running along an inner wall of the processing chamber in the stacking direction of the substrates and supply the processing gas to the inside of the processing chamber, and the inactive gas supply unit has a pair of inactive gas supply nozzles which are provided so as to extend running along the inner wall of the processing chamber in the stacking direction of the substrates and so as to sandwich at least one processing gas supp
    Type: Application
    Filed: February 20, 2009
    Publication date: September 10, 2009
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Masanori Sakai, Yuji Takebayashi, Tsutomu Kato, Shinya Sasaki, Hirohisa Yamazaki
  • Publication number: 20090197424
    Abstract: A substrate processing apparatus according to the present invention promotes supplying gases to spaces between adjacent substrates without reducing the number of substrates which can be collectively processed.
    Type: Application
    Filed: January 29, 2009
    Publication date: August 6, 2009
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Masanori Sakai, Yuji Takebayashi, Tsutomu Kato, Shinya Sasaki, Hirohisa Yamazaki
  • Publication number: 20090130331
    Abstract: A thin film is deposited on a substrate to be processed by continuously performing: forming an amorphous thin film composed of Ti, N, C, and H as principal components; oxidizing a surface of the thin film; removing C and H, which are impurities in the thin film, by a plasma treatment, and increasing the density of the thin film; and removing a TiO thin film from a surface of the thin film.
    Type: Application
    Filed: August 10, 2006
    Publication date: May 21, 2009
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Masayuki Asai, Masayuki Tsuneda, Shinya Sasaki
  • Publication number: 20090092401
    Abstract: In a quaternary phase modulator including two phase modulators disposed in parallel and a phase adjuster that adjusts a phase difference when the outputs of the two phase modulators are combined, there are provided a second light source that introduces light propagated in a backward direction, a first controller that controls the bias of the two phase modulators so that the intensity of the backward light is a minimum on the input side of the quaternary phase modulator, and a second controller that controls the bias of the phase adjuster so that a result monitored by a photodiode having a bandwidth not exceeding the bit rate on the output side of the quaternary phase modulator is a minimum, the first controller being implemented after the second controller is implemented.
    Type: Application
    Filed: August 12, 2008
    Publication date: April 9, 2009
    Inventors: Kenro Sekine, Nobuhiko Kikuchi, Shinya Sasaki
  • Publication number: 20090071505
    Abstract: Provided is a cleaning method which can efficiently remove a film, such as a high dielectric constant oxide film, which is difficult to be etched by a fluorine-containing gas alone. As a cleaning method of a substrate processing apparatus which forms a desired film on a wafer by supplying a source gas, there is provided a cleaning method for removing a film attached to the inside of a processing chamber. The cleaning method includes: a step of supplying a halogen-containing gas into the processing chamber; and a step of supplying a fluorine-containing gas into the processing chamber, after starting the supply of the halogen-containing gas, wherein, in the step of supplying the fluorine-containing gas, the fluorine-containing gas is supplied while supplying the halogen-containing gas into the processing chamber.
    Type: Application
    Filed: August 8, 2008
    Publication date: March 19, 2009
    Inventors: Hironobu Miya, Yuji Takebayashi, Masanori Sakai, Shinya Sasaki, Hirohisa Yamazaki, Atsuhiko Suda
  • Publication number: 20080240729
    Abstract: A data transmission system comprising a transmitter and a receiver. The transmitter comprises a phase encoder for partitioning consecutive bit data to be input in data in units of X bits; and converting a 2x value indicated by the data of X bits in unique association with an (N/2-1)Y value of a Y symbol, and for confining use of signal points, from among the signal points of N-ary phase, only to a signal point P1 (at a phase angle 0) and N/2-2 signal points P(2n+2) (where 1?n<N/2-2). The receiver comprises a phase decoder for notifying an error detection when a signal point other than a signal point that are permitted to be used is received, and performing an error correction by changing the signal point to a signal point which has a smaller hamming distance.
    Type: Application
    Filed: January 16, 2008
    Publication date: October 2, 2008
    Inventors: Hidehiro Toyoda, Kenro Sekine, Shinya Sasaki, Shinji Nishimura
  • Publication number: 20080181620
    Abstract: A QPSK modulator comprising: two phase modulators implemented in parallel for outputting the light phase-modulated with an information signal; a phase shifter for shifting the phase of the light phase-modulated with the first phase modulator of the two phase modulators and for outputting the phase-shifted light; and a combiner for combining output light of the phase shifter and output light of the second phase modulator, in which a drive signal generated by multiplexing a signal of a first and second frequencies and the information signal is inputted into the first and second phase modulators, and in which the QPSK modulator feeds back a detected amount to a voltage applied to the phase shifter so that the phase shift amount may be ?/2, the detected amount of signals having the frequency of the difference between or the sum of the first and second frequency which are extracted from the modulated light.
    Type: Application
    Filed: July 12, 2007
    Publication date: July 31, 2008
    Inventor: Shinya Sasaki
  • Publication number: 20080166886
    Abstract: There is provided a substrate processing apparatus, comprising: a processing chamber that houses a plurality of substrates in a state of being stacked; a heating member that heats the substrate and an atmosphere in the processing chamber; a first gas supply member that supplies a source gas that thermally-decomposes; a second gas supply member that supplies oxidative gas; an exhaust member that exhausts the atmosphere in the processing chamber; and a controller that controls at least the first gas supply member, the second gas supply member, and the exhaust member.
    Type: Application
    Filed: September 18, 2007
    Publication date: July 10, 2008
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Masanori Sakai, Norikazu Mizuno, Shinya Sasaki, Hirohisa Yamazaki
  • Publication number: 20080132084
    Abstract: To improve a step coverage and a loading effect, without inviting a deterioration of throughput and an increase of cost, in a method for forming a thin film by alternately flowing a raw material and alcohol to a processing chamber.
    Type: Application
    Filed: November 7, 2007
    Publication date: June 5, 2008
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Hironobu Miya, Norikazu Mizuno, Masanori Sakai, Shinya Sasaki, Hirohisa Yamazaki
  • Publication number: 20080057352
    Abstract: A magnetic material is provided that has an iron oxide phase whose principal phase is a crystal of a structure which has the same space group as ?-Fe2O3 crystal and in which Al is substituted for a portion of the Fe sites of the ?-Fe2O3 crystal. The molar ratio of Al to Fe in the iron oxide phase, when expressed as Al:Fe=x:(2?x), satisfies 0?x?1. The value of x is preferably in the range of 0.3 to 0.7. The average particle diameter of the powder determined from a TEM image is preferably 5 to 200 nm, more preferably 10 to 100 nm. The magnetic material has very high practical value because it enables the extremely high coercive force Hc of the ?-Fe2O3 crystal to be regulated to a level enabling utilization in magnetic recording medium and various other applications. The magnetic powder can be produced by a method combining the reverse micelle method and the sol-gel method.
    Type: Application
    Filed: August 28, 2007
    Publication date: March 6, 2008
    Inventors: Shin-ichi Ohkoshi, Shunsuke Sakurai, Shiro Kuroki, Kimitaka Sato, Shinya Sasaki
  • Patent number: 7292785
    Abstract: An optical transmission system accomplishes optical transmission over a long distance by combining a multiplexing line terminal with optical amplifiers, linear repeaters, and regenerators with optical amplifiers combined together. The system also accomplishes the optical transmission over a short distance by directly connecting the linear terminals therebetween, with an electric-to-optic converter replaced by an electric-to-optic converter having a semiconductor amplifier, with an optic-toelectric converter by an optic-to-electric converter having an avalanche photodiode as light receiver, and with no use of any optical booster amplifier and optical preamplifier in multiplexing line terminal. With these, the optical transmission system can be easily constructed depending on the transmission distance required.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: November 6, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Keiji Tomooka, Naohiro Sakakida, Shin Nishimura, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki, Yukio Nakano, Masahiro Takatori, Toru Kazawa, Shinya Sasaki, Ryoji Takeyari, Hiroyuki Nakano
  • Publication number: 20070087229
    Abstract: A magnetic powder for magnetic recording medium comprises acicular particles constituted primarily of Fe, wherein the powder contains Co in an amount such that the Co/Fe ratio is 50 at. % or less and the Co is contained in a manner such that the surface portion has a higher concentration than the core portion of the particles, and upon subjecting the magnetic powder for magnetic recording medium to TG measurement, the powder exhibits at least two oxidation starting points: a low-temperature side oxidation starting point and a high-temperature side oxidation starting point. The magnetic powder achieves improved resistance to oxidation without sacrificing magnetic characteristics.
    Type: Application
    Filed: October 14, 2005
    Publication date: April 19, 2007
    Inventors: Shinichi Konno, Kenichi Inoue, Toshihiko Ueyama, Kenji Masada, Shinya Sasaki
  • Publication number: 20070053687
    Abstract: An optical transmission system accomplishes optical transmission over a long distance by combining a multiplexing line terminal with optical amplifiers, linear repeaters, and regenerators with optical amplifiers combined together. The system also accomplishes the optical transmission over a short distance by directly connecting the linear terminals therebetween, with an electric-to-optic converter replaced by an electric-to-optic converter having a semiconductor amplifier, with an optic-toelectric converter by an optic-to-electric converter having an avalanche photodiode as light receiver, and with no use of any optical booster amplifier and optical preamplifier in multiplexing line terminal. With these, the optical transmission system can be easily constructed depending on the transmission distance required.
    Type: Application
    Filed: November 7, 2006
    Publication date: March 8, 2007
    Inventors: Keiji Tomooka, Naohiro Sakakida, Shin Nishimura, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki, Yukio Nakano, Masahiro Takatori, Toru Kazawa, Shinya Sasaki, Ryoji Takeyari, Hiroyuki Nakano
  • Patent number: 7167652
    Abstract: An optical transmission system accomplishes optical transmission over a long distance by combining a multiplexing line terminal with optical amplifiers, linear repeaters, and regenerators with optical amplifiers combined together. The system also accomplishes the optical transmission over a short distance by directly connecting the linear terminals therebetween, with an electric-to-optic converter replaced by an electric-to-optic converter having a semiconductor amplifier, with an optic-toelectric converter by an optic-to-electric converter having an avalanche photodiode as light receiver, and with no use of any optical booster amplifier and optical preamplifier in multiplexing line terminal. With these, the optical transmission system can be easily constructed depending on the transmission distance required.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: January 23, 2007
    Assignee: Hitachi, Ltd
    Inventors: Keiji Tomooka, Naohiro Sakakida, Shin Nishimura, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki, Yukio Nakano, Masahiro Takatori, Toru Kazawa, Shinya Sasaki, Ryoji Takeyari, Hiroyuki Nakano
  • Publication number: 20060280509
    Abstract: In a cryptographic key distribution system by the phase modulation using a single photon state or a faint LD light, there is required an interferometer independent on polarization and stabilized against thermal fluctuations in order to make a transmission distance longer. Cryptographic key distribution systems are generally low in cryptographic-key-generating efficiency, and an improvement in the efficiency is demanded. In the present invention, two interferometers are disposed within the receiver so as to require no phase modulator within the receiver, thereby achieving a polarization-independent receiver. The pulses are paired, and the signal is transmitted with the relative phase, and the interval of the paired pulses is sufficiently reduced to set the optical path within the interferometer in the receiver to be smaller, thereby achieving the interferometer stabilized against thermal fluctuations.
    Type: Application
    Filed: February 9, 2006
    Publication date: December 14, 2006
    Inventors: Tatsuya Tomaru, Shinya Sasaki, Kiyotaka Hammura
  • Patent number: 7068871
    Abstract: An optical wiring substrate provides a slab optical waveguide having a refractive index different from a refractive index of other surrounding portions and a planar convex lens being provided continuously to a tip portion of an optical path of an optical wave guide including a core and cladding and formed on a substrate. The optical path of light passing through the planar convex lens is converted approximately by 90° with a mirror. The light reflected with the mirror is made as parallel light rays by use of a cylindrical lens.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: June 27, 2006
    Assignee: Fujitsu Limited
    Inventors: Akio Sugama, Masayuki Kato, Masatoshi Ishii, Shinya Sasaki, Tsuyoshi Aoki
  • Publication number: 20050226621
    Abstract: It was difficult to detect a wavelength error. Further, a wavelength error of an optical add signal is accompanied by a calculation error of the number of wavelengths of a wavelength division multiplexing signal, which causes a set value of an optical signal level to become abnormal, resulting in the degradation of the optical signal. According to the present invention, part of an inputted optical add signal 118 is reflected by a mirror 117, and is thereby inputted into an optical wavelength multiplexer 105 in the reverse direction so that the optical add signal is returned to paths 115-1 through 115-16 corresponding to wavelengths ?1 through ?16. If the returned optical add signal is an optical add signal having a correct wavelength (in FIG. 1, ?16), the optical signal enters its corresponding backward direction optical detector 113-16. Accordingly, it is possible to check whether or not a wavelength of the optical add signal is correct.
    Type: Application
    Filed: August 9, 2004
    Publication date: October 13, 2005
    Inventors: Nobuhiko Kikuchi, Kenro Sekine, Shinya Sasaki
  • Publication number: 20050175041
    Abstract: A problem to be solved in an optical communication system for carrying out bidirectional transmission between communication nodes by wavelength-division-multiplexed optical signals is that a plurality of optical add-drop multiplexers installed in the communication nodes are required for each transmission direction, and therefore, the communication cost is increased. An optical circulator or an optical coupler is arranged at an input/output port of the optical add-drop multiplexer and the wavelength-division-multiplexed optical signals are assembled for each transmission direction, whereby optical signals transmitted bidirectionally can be handled by one optical add-drop multiplexer.
    Type: Application
    Filed: July 12, 2004
    Publication date: August 11, 2005
    Inventors: Shinya Sasaki, Nobuhiko Kikuchi, Kenro Sekine
  • Patent number: 6922508
    Abstract: An optical coupling structure useful in optical switching devices is described. The optical coupling structure includes a core layer for guiding a light beam exiting a core layer of an optical fiber into a slab waveguide layer. The core layer of the optical coupling structure avoids a power loss of a light beam and establishes an adiabatic coupling. The core layer of the optical coupling structure may have a tapered surface.
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: July 26, 2005
    Assignee: Fujitsu Limited
    Inventors: Alexei Glebov, Shinya Sasaki, Michael Lee
  • Publication number: 20050041906
    Abstract: An optical wiring substrate provides a slab optical waveguide having a refractive index different from a refractive index of other surrounding portions and a planar convex lens being provided continuously to a tip portion of an optical path of an optical wave guide including a core and cladding and formed on a substrate. The optical path of light passing through the planar convex lens is converted approximately by 90° with a mirror. The light reflected with the mirror is made as parallel light rays by use of a cylindrical lens.
    Type: Application
    Filed: September 24, 2004
    Publication date: February 24, 2005
    Inventors: Akio Sugama, Masayuki Kato, Masatoshi Ishii, Shinya Sasaki, Tsuyoshi Aoki