Patents by Inventor Mamoru Endo

Mamoru Endo 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).

  • Patent number: 10670090
    Abstract: A clutch structure includes a clutch input shaft, a clutch output shaft, a weight member, a one-way clutch, and a bearing. The weight member frictionally contacts a cylindrical portion of the clutch output shaft to transmit a rotational power from the clutch input shaft to the clutch output shaft and separates from the cylindrical portion to disconnect the transmission of the rotational power. When the weight member separates from the cylindrical portion and a rotational frequency of the clutch input shaft falls below a rotational frequency of the clutch output shaft, the one-way clutch links an input shaft portion of the clutch input shaft and an output shaft portion of the clutch output shaft. The one-way clutch and the bearing are located between the input shaft portion and the output shaft portion.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: June 2, 2020
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Mamoru Endo, Makoto Sato
  • Publication number: 20200011605
    Abstract: Manufacturing a heat exchanger by brazing of multiple heat transfer pipes, multiple fins, and headers. The multiple heat transfer pipes joined to each fin with the heat transfer pipes each being inserted into cutout recessed portions as cutouts of side portions of the fins on one side. The headers each joined to both end portions of each heat transfer pipe to couple the multiple heat transfer pipes and having internal spaces for collecting or distributing fluid flowing in the multiple heat transfer pipes. A protruding length Tf of each fin from a corresponding one of the heat transfer pipes and a distance Th from each heat transfer pipe to an outer surface of a corresponding one of the headers on the same side as a protrusion are substantially equal to each other.
    Type: Application
    Filed: September 17, 2019
    Publication date: January 9, 2020
    Inventors: Takeshi ENDO, Mamoru Houfuku, Nagatoshi Oki, Shuuhei Tada
  • Publication number: 20190063514
    Abstract: A clutch structure includes a clutch input shaft, a clutch output shaft, a weight member, a one-way clutch, and a bearing. The weight member frictionally contacts a cylindrical portion of the clutch output shaft to transmit a rotational power from the clutch input shaft to the clutch output shaft and separates from the cylindrical portion to disconnect the transmission of the rotational power. When the weight member separates from the cylindrical portion and a rotational frequency of the clutch input shaft falls below a rotational frequency of the clutch output shaft, the one-way clutch links an input shaft portion of the clutch input shaft and an output shaft portion of the clutch output shaft. The one-way clutch and the bearing are located between the input shaft portion and the output shaft portion.
    Type: Application
    Filed: July 5, 2018
    Publication date: February 28, 2019
    Inventors: Mamoru ENDO, Makoto SATO
  • Patent number: 9594253
    Abstract: The present invention provides a spectral apparatus for spectrally separating light including a predetermined wavelength, including a slit that the light enters, a first optical system configured to collimate the light from the slit, a transmissive type diffraction element configured to diffract the light from the first optical system, and a second optical system including a first mirror configured to reflect the light diffracted by the transmissive type diffraction element, and a second mirror configured to reflect the light reflected by the first mirror and diffracted by the transmissive type diffraction element, and configured to make the light reciprocally travel between the first mirror and the second mirror via the transmissive type diffraction element.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: March 14, 2017
    Assignees: CANON KABUSHIKI KAISHA, The University of Tokyo
    Inventors: Takashi Sukegawa, Yohei Kobayashi, Akira Ozawa, Mamoru Endo, Makoto Gonokami
  • Publication number: 20140363338
    Abstract: The present invention provides a spectral apparatus for spectrally separating light including a predetermined wavelength, including a slit that the light enters, a first optical system configured to collimate the light from the slit, a transmissive type diffraction element configured to diffract the light from the first optical system, and a second optical system including a first mirror configured to reflect the light diffracted by the transmissive type diffraction element, and a second mirror configured to reflect the light reflected by the first mirror and diffracted by the transmissive type diffraction element, and configured to make the light reciprocally travel between the first mirror and the second mirror via the transmissive type diffraction element.
    Type: Application
    Filed: June 3, 2014
    Publication date: December 11, 2014
    Applicants: CANON KABUSHIKI KAISHA, The University of Tokyo
    Inventors: Takashi SUKEGAWA, Yohei KOBAYASHI, Akira OZAWA, Mamoru ENDO, Makoto GONOKAMI
  • Patent number: 7661277
    Abstract: As a jig material to use under plasma reaction for producing semiconductors, the present invention provides a quartz glass having resistance against plasma corrosion, particularly corrosion resistance against fluorine-based plasma gases, and which is usable without causing anomalies to silicon wafers; the present invention furthermore provides a quartz glass jig, and a method for producing the same. A quartz glass containing 0.1 to 20 wt % in total of two or more types of metallic elements, said metallic elements comprising at least one type of metallic element selected from Group 3B of the periodic table as a first metallic element and at least one type of metallic element selected from the group consisting of Mg, Ca, Sr, Ba, Sc, Y, Ti, Zr, Hf, lanthanoids, and actinoids as a second metallic element, provided that the maximum concentration of each of the second metallic elements is 1.0 wt % or less.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: February 16, 2010
    Assignee: Shin-Etsu Quartz Products Co., Ltd.
    Inventors: Tatsuhiro Sato, Nobumasa Yoshida, Mamoru Endo
  • Publication number: 20080113174
    Abstract: As a jig material to use under plasma reaction for producing semiconductors, the present invention provides a quartz glass having resistance against plasma corrosion, particularly corrosion resistance against fluorine-based plasma gases, and which is usable without causing anomalies to silicon wafers; the present invention furthermore provides a quartz glass jig, and a method for producing the same. A quartz glass containing 0.1 to 20 wt % in total of two or more types of metallic elements, said metallic elements comprising at least one type of metallic element selected from Group 3B of the periodic table as a first metallic element and at least one type of metallic element selected from the group consisting of Mg, Ca, Sr, Ba, Sc, Y, Ti, Zr, Hf, lanthanoids, and actinoids as a second metallic element, provided that the maximum concentration of each of the second metallic elements is 1.0 wt % or less.
    Type: Application
    Filed: December 21, 2007
    Publication date: May 15, 2008
    Applicant: SHIN-ETSU QUARTZ PRODUCTS CO., LTD.
    Inventors: Tatsuhiro Sato, Nobumasa Yoshida, Mamoru Endo
  • Patent number: 7365037
    Abstract: As a jig material to use under plasma reaction for producing semiconductors the present invention provides a quartz glass having resistance against plasma corrosion, particularly corrosion resistance against fluorine-based plasma gases, and which is usable without causing anomalies to silicon wafers; the present invention furthermore provides a quartz glass jig, and a method for producing the same. A quartz glass containing 0.1 to 20 wt % in total of two or more types of metallic elements, said metallic elements comprising at least one type of metallic element selected from Group 3B of the periodic table as a first metallic element and at least one type of metallic element selected from the group consisting of Mg, Ca, Sr, Ba, Sc, Y, Ti, Zr, Hf, lanthanoids, and actinoids as a second metallic element, provided that the maximum concentration of each of the second metallic elements is 1.0 wt % or less.
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: April 29, 2008
    Assignee: Shin-Etsu Quartz Products Co., Ltd.
    Inventors: Tatsuhiro Sato, Nobumasa Yoshida, Mamoru Endo
  • Publication number: 20050272588
    Abstract: As a jig material to use under plasma reaction for producing semiconductors the present invention provides a quartz glass having resistance against plasma corrosion, particularly corrosion resistance against fluorine-based plasma gases, and which is usable without causing anomalies to silicon wafers; the present invention furthermore provides a quartz glass jig, and a method for producing the same. A quartz glass containing 0.1 to 20 wt % in total of two or more types of metallic elements, said metallic elements comprising at least one type of metallic element selected from Group 3B of the periodic table as a first metallic element and at least one type of metallic element selected from the group consisting of Mg, Ca, Sr, Ba, Sc, Y, Ti, Zr, Hf, lanthanoids, and actinoids as a second metallic element, provided that the maximum concentration of each of the second metallic elements is 1.0 wt % or less.
    Type: Application
    Filed: March 11, 2005
    Publication date: December 8, 2005
    Inventors: Tatsuhiro Sato, Nobumasa Yoshida, Mamoru Endo
  • Patent number: 6458703
    Abstract: A method for manufacturing a semiconductor device that fills contact holes with conductive material such as aluminum or an aluminum alloy. A semiconductor device is manufactured by the process of forming an opening such as a contact hole in an interlayer dielectric film formed on a semiconductor substrate having a device element formed thereon. A first film and a second film made of conductive material such as aluminum or an alloy containing aluminum are formed on the interlayer dielectric film and the opening. The second film is then gradually cooled.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: October 1, 2002
    Assignee: Seiko Epson Corporation
    Inventors: Mamoru Endo, Junichi Takeuchi, Michio Asahina, Eiji Suzuki, Kazuki Matsumoto
  • Publication number: 20010041440
    Abstract: A method for manufacturing a semiconductor device that fills contact holes with conductive material such as aluminum or an aluminum alloy. A semiconductor device is manufactured by the process of forming an opening such as a contact hole in an interlayer dielectric film formed on a semiconductor substrate having a device element formed thereon. A first film and a second film made of conductive material such as aluminum or an alloy containing aluminum are formed on the interlayer dielectric film and the opening. The second film is then gradually cooled.
    Type: Application
    Filed: September 3, 1999
    Publication date: November 15, 2001
    Inventors: MAMORU ENDO, JUNICHI TAKEUCHI, MICHIO ASAHINA, EIJI SUZUKI, KAZUKI MATSUMOTO
  • Patent number: 5876473
    Abstract: Cristobalite-containing silica glass is provided wherein .alpha.-cristobalite in the shape of a small sphere or a small, round-edged or sharp-edged, three-dimensional region is dispersed in the silica glass matrix. The diameter of each .alpha.-cristobalite sphere or region is, in the range of 0.1 um to 1000 um, and the content of the .alpha.-cristobalite is at least 10 wt. %. The cristobalite-containing silica glass is produced by heating a mixture of two kinds or more of crystalline silicon dioxide powder with melting points different from each other by 20.degree. C. or more. The mixture contains silicon dioxide having the highest melting point in the range of 10 wt. % to 80 Wt. % and is heated at temperatures ranging from the lowest melting point to a temperature lower than the highest melting point.
    Type: Grant
    Filed: October 25, 1996
    Date of Patent: March 2, 1999
    Inventors: Kyoichi Inaki, Tohru Segawa, Nobumasa Yoshida, Mamoru Endo
  • Patent number: 5528671
    Abstract: In a network control system connecting terminal units providing at least a chat function to make communication with the other terminal units on a real time basis while connecting the keyboard and executing mutual communication between the terminal units, the terminal unit which becomes the transmitting side describes the mode corresponding to the function to be executed and sets a communication code corresponding to such mode within a communication command to be transmitted. The transmitting terminal indexes a connection timing table and also connects or disconnects the line for communication to the distant terminal unit on the basis of contents of the connection timing table in order obtain cost-effective application of the communication network.
    Type: Grant
    Filed: May 14, 1991
    Date of Patent: June 18, 1996
    Assignee: Fujitsu Limited
    Inventors: Tadamitsu Ryu, Yoshio Mogi, Takanori Fukatsu, Hideyo Okazaki, Gen Kakehi, Akira Hashimoto, Mamoru Endo, Mitsuhiko Yamagata
  • Patent number: 5408608
    Abstract: A distributed data base system is formed by terminal units connected in a public network or a private network. Each terminal unit stores respectively the real data and a temporary center for storing the one or a plurality of control information among various pieces of control information, such as contents corresponding to each real data, keyword or command assigned to data. Moreover, check information set up for acquiring security is provided as the one of the terminal unit. A terminal unit utilizing data obtains identification information of terminal units storing relevant real data by inputting contents, commands or keywords by accessing the center and reading or extracting the necessary real data through the network from a terminal unit having real data based on such identification information but is capable of restricting users (terminal units) which are allowed to read the open data in accordance with the degree of importance of the data.
    Type: Grant
    Filed: May 8, 1991
    Date of Patent: April 18, 1995
    Assignee: Fujitsu Limited
    Inventors: Tadamitsu Ryu, Yoshio Mogi, Takanori Fukatsu, Gen Kakehi, Masahiko Murakawa, Mamoru Endo, Mitsuhiko Yamagata, Katsuo Sato, Akira Hashimoto, Hiroshi Araki, Yasumasa Takahashi
  • Patent number: 5291515
    Abstract: On the transmitter side, data to be transmitted are converted into a plurality of parallel data sets by a serial-parallel converter 101 and spread spectrum modulation is effected by means of PN code generators 105 and selectors 102. Each of the modulated outputs is delayed by a delaying circuit 103 with reference to a sounder channel and the phase thereof. The output thus delayed and the output of the sounder channel are added by an adder 104 to be multiplexed and transmitted.On the receiver side, correlation between a received signal and a reference signal is formed by a correlator 201 to obtain a correlation pulse from the correlation output thus obtained. Data demodulation is effected by means of a sounder detecting circuit 209, a sampling pulse generating circuit 210 and an information detecting circuit 211, starting from this correlation pulse.According to the structure described above, in SS communication, data demodulation can be effected with a high efficiency by using a single correlator.
    Type: Grant
    Filed: June 11, 1991
    Date of Patent: March 1, 1994
    Assignee: Clarion Co., Ltd.
    Inventors: Yoshitaka Uchida, Mamoru Endo, Masahiro Hamatsu, Shigeo Akazawa
  • Patent number: 5228055
    Abstract: On the transmitter side of a spread spectrum communication device according to the present invention, transmission date are converted into a plurality of parallel data sets by a serial-parallel convertor and spread-spectrum-modulation is effected by means of PN code generators and selectors. Different modulated outputs are delayed by delay devices, using a sounder channel and the phase thereof as a reference. The delayed outputs and the output of the sounder channel are added by an adder, multiplexed and transmitted.On the receiver side correlation of a received signal with a reference signal is formed by a correlator and a correlation pulse is obtained from the correlation output. Data are reproduced by means of a sounder detecting circuit, a sampling pulse generating circuit and an information detecting circuit.In this way data reproduction can be effected with a high efficiency by means of a single correlator.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: July 13, 1993
    Assignee: Clarion Co., Ltd.
    Inventors: Yoshitaka Uchida, Mamoru Endo, Masahiro Hamatsu, Shigeo Akazawa
  • Patent number: 5204877
    Abstract: In a spread spectrum modulating device according to the present invention transmission data are converted into parallel data by a serial-parallel converting circuit, which are held by a latch circuit and assign upper digit addresses.Lower digit addresses in the memory are assigned by a counter.Parallel data outputted by the memory are converted into analogue signals by a D/A converter, which analogue signals are multiplied by a carrier by a multiplier to obtain a spread spectrum signal.Owing to the construction described above, a simple and small scale construction can be realized for the spread spectrum modulating device.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: April 20, 1993
    Assignee: Clarion Co., Ltd.
    Inventors: Mamoru Endo, Yoshitaka Uchida
  • Patent number: 5148413
    Abstract: A device according to the present invention comprises a variable notch filter, a PN code generator, a VCO and a convolver. The frequency is swept within the band of the convolver by the VCO after having stopped operations of the variable notch filter and the PN code generator and the output of the convolver at this time is detected. When the output thus detected exceeds a threshold, a detected signal is sent to the variable notch filter to control the notch part thereof so as to correspond to disturbing wave to remove the disturbing wave from a received signal. Since the convolver is used not only for a correlator but also for a disturbing wave detector, the construction can be simple and cheap.
    Type: Grant
    Filed: February 14, 1992
    Date of Patent: September 15, 1992
    Assignee: Clarion Co., Ltd.
    Inventors: Mamoru Endo, Yoshitaka Uchida
  • Patent number: 5073898
    Abstract: A signal processing circuit utilizes a convolver correlating a reference carrier signal with a received signal. The correlator output is detected and then demodulated to output the signal information originally present on the carrier. For a conventional AM signal the reference carrier signal is applied at a frequency offset from the AM center frequency. When the carrier is an FM signal, the reference signal is applied at a frequency equal to the center frequency of the FM signal. Similar procedures are followed for a spread-modulated AM signal, and the reference signal is modulated with a suitably timed-reverse replica of the pseudo-noise code. A similar procedure is used to process spread-spectrum frequency shift keyed FM signals.
    Type: Grant
    Filed: January 30, 1990
    Date of Patent: December 17, 1991
    Assignee: Clarion Co., Ltd.
    Inventors: Mamoru Endo, Masahiro Hamatsu
  • Patent number: 5008898
    Abstract: In a carrier signal modulating device a carrier signal is modulated by using a square phase sequence as a PN code.
    Type: Grant
    Filed: March 20, 1990
    Date of Patent: April 16, 1991
    Assignee: Clarion Co., Ltd.
    Inventors: Mashiro Hamatsu, Mamoru Endo