Patents by Inventor Katsuhiko Ishikawa

Katsuhiko Ishikawa 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: 9756689
    Abstract: A light output control device includes a switching device, multiple signal input ports, a signal selection circuit, and a control circuit. The switching device is to be electrically connected between a direct-current power supply and a light source circuit. The light source circuit includes a semiconductor light emitting element. The multiple signal input ports respectively correspond to multiple kinds of light output control signals. The signal selection circuit selects, when receiving two or more light output control signals indicating different light output levels through the multiple signal input ports, a light output control signal indicating a lowest (or highest) light output level, from the two or more light output control signals. The control circuit performs switching control of the switching device with a duty cycle corresponding to the lowest (or highest) light output level indicated by the light output control signal selected by the signal selecting circuit.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: September 5, 2017
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Shigeru Ido, Katsuhiko Ishikawa, Hirohiko Nojiri
  • Publication number: 20170064783
    Abstract: A light output control device includes a switching device, multiple signal input ports, a signal selection circuit, and a control circuit. The switching device is to be electrically connected between a direct-current power supply and a light source circuit. The light source circuit includes a semiconductor light emitting element. The multiple signal input ports respectively correspond to multiple kinds of light output control signals. The signal selection circuit selects, when receiving two or more light output control signals indicating different light output levels through the multiple signal input ports, a light output control signal indicating a lowest (or highest) light output level, from the two or more light output control signals. The control circuit performs switching control of the switching device with a duty cycle corresponding to the lowest (or highest) light output level indicated by the light output control signal selected by the signal selecting circuit.
    Type: Application
    Filed: August 9, 2016
    Publication date: March 2, 2017
    Inventors: Shigeru IDO, Katsuhiko ISHIKAWA, Hirohiko NOJIRI
  • Patent number: 8329973
    Abstract: The multiple zeolite catalyst is a catalytic composition used to convert C9+ alkylaromatic hydrocarbons to BTX, particularly commercially valuable xylenes. The catalyst is formed by mixing at least two zeolites selected from mordenite, beta zeolite, ZSM-5, ZSM-11, ZSM-12, ZSM-22, ZSM-23, MFI topology zeolite, NES topology zeolite, EU-1, MAPO-36, SAPO-5, SAPO-11, SAPO-34, and SAPO-41, and adding at least one metal component selected from Group VIB and Group VIII of the Periodic Table of the Elements. The two zeolites should have different physical and chemical characteristics, such as pore size and acidity. An exemplary catalyst includes mordenite, ZSM-5, and 3 wt. % molybdenum. The transalkylation reaction may be conducted in one or more reactors with a fixed bed, moving bed, or radial flow reactor at 200-540° C., a pressure of 1.0-5.0 MPa, and liquid hourly space velocity of 1.0-5.0 per hour.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: December 11, 2012
    Assignees: King Fahd University of Petroleum and Minerals, Japan Cooperation Center, Petroleum (JCCP)
    Inventors: Tomoyuki Inui, Masayuki Inui, legal representative, Mohammad A. Ali, Muhammad A. Al-Saleh, Syed A. Ali, Khalid Al-Nawad, Tsutomo Okamoto, Katsuhiko Ishikawa, Minoru Hatayama
  • Publication number: 20120116139
    Abstract: The multiple zeolite catalyst is a catalytic composition used to convert C9+ alkylaromatic hydrocarbons to BTX, particularly commercially valuable xylenes. The catalyst is formed by mixing at least two zeolites selected from mordenite, beta zeolite, ZSM-5, ZSM-11, ZSM-12, ZSM-22, ZSM-23, MFI topology zeolite, NES topology zeolite, EU-1, MAPO-36, SAPO-5, SAPO-11, SAPO-34, and SAPO-41, and adding at least one metal component selected from Group VIB and Group VIII of the Periodic Table of the Elements. The two zeolites should have different physical and chemical characteristics, such as pore size and acidity. An exemplary catalyst includes mordenite, ZSM-5, and 3 wt. % molybdenum. The transalkylation reaction may be conducted in one or more reactors with a fixed bed, moving bed, or radial flow reactor at 200-540° C., a pressure of 1.0-5.0 MPa, and liquid hourly space velocity of 1.0-5.0 per hour.
    Type: Application
    Filed: January 18, 2012
    Publication date: May 10, 2012
    Applicants: JAPAN COOPERATION CENTER, PETROLEUM (JCCP), KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: TOMOYUKI INUI, MASAYUKI INUI, MOHAMMAD A. ALI, MUHAMMAD A. AL-SALEH, SYED A. ALI, KHALID AL-NAWAD, TSUTOMO OKAMOTO, KATSUHIKO ISHIKAWA, MINORU HATAYAMA
  • Patent number: 7699256
    Abstract: [Object] It is intended to provide a spool capable of winding and retaining a thread-like substance without causing a winding curling. [Solving Means] This spool 11 has a base plate 14, thread retaining members 15 and 16, and auxiliary plates 17 and 18. The base plate 14 is made from a resin, paper, or the like and in the form of an elongated rectangle. The base plate 14 is folded at a central portion 21. The thread retaining members 15 and 16 are provided on opposite ends of the base plate 14. The auxiliary plates 17 and 18 are fixed to the thread retaining members 15 and 16 to form flanges. Ends of the auxiliary plates 17 and 18 are fixed to the base plate 14.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: April 20, 2010
    Assignee: Shimano, Inc.
    Inventors: Fujita Kimura, Katsuhiko Ishikawa
  • Publication number: 20100029467
    Abstract: The multiple zeolite catalyst is a catalytic composition used to convert C9+ alkylaromatic hydrocarbons to BTX, particularly commercially valuable xylenes. The catalyst is formed by mixing at least two zeolites selected from mordenite, beta zeolite, ZSM-5, ZSM-11, ZSM-12, ZSM-22, ZSM-23, MFI topology zeolite, NES topology zeolite, EU-1, MAPO-36, SAPO-5, SAPO-11, SAPO-34, and SAPO-41, and adding at least one metal component selected from Group VIB and Group VIII of the Periodic Table of the Elements. The two zeolites should have different physical and chemical characteristics, such as pore size and acidity. An exemplary catalyst includes mordenite, ZSM-5, and 3 wt. % molybdenum. The transalkylation reaction may be conducted in one or more reactors with a fixed bed, moving bed, or radial flow reactor at 200-540° C., a pressure of 1.0-5.0 MPa, and liquid hourly space velocity of 1.0-5.0 per hour.
    Type: Application
    Filed: July 30, 2008
    Publication date: February 4, 2010
    Inventors: Tomoyuki Inui, Masayuki Inui, Mohammad A. Ali, Muhammad A. Al-Saleh, Syed A. Ali, Khalid Al-Nawad, Tsutomu Okamoto, Katsuhiko Ishikawa, Minoru Hatayama
  • Publication number: 20090277989
    Abstract: [Object] It is intended to provide a spool capable of winding and retaining a thread-like substance without causing a winding curling. [Solving Means] This spool 11 has a base plate 14, thread retaining members 15 and 16, and auxiliary plates 17 and 18. The base plate 14 is made from a resin, paper, or the like and in the form of an elongated rectangle. The base plate 14 is folded at a central portion 21. The thread retaining members 15 and 16 are provided on opposite ends of the base plate 14. The auxiliary plates 17 and 18 are fixed to the thread retaining members 15 and 16 to form flanges. Ends of the auxiliary plates 17 and 18 are fixed to the base plate 14.
    Type: Application
    Filed: October 2, 2006
    Publication date: November 12, 2009
    Inventors: Fujita Kimura, Katsuhiko Ishikawa
  • Patent number: 6346756
    Abstract: In a ripple voltage detection system of a rectified waveform, a motor rotation detection structure is provided to increase ripple voltage by modifying number of windings, to bring cogging torque and number of parts to be equivalent, and to achieve automatic operation function. In the motor rotation detection structure used for automatic operation function of switching device such as vehicle power windows or the like, rotor of this motor includes an armature core with a plurality of slots arranged between teeth, a plurality of coils wound around each of the slots, a commutator with a plurality of segments connected to each of the coils and the like. Winding number of each of the coils is modified per each of the slots, and potential difference between the segments adjoining to each other and having different winding number is increased. So, the ripple voltage generated at a rotation of the armature core is increased in comparison with the segments having the same winding number.
    Type: Grant
    Filed: September 26, 2000
    Date of Patent: February 12, 2002
    Assignee: Mitsuba Corporation
    Inventors: Katsuhiko Ishikawa, Hiroshi Mori
  • Patent number: 6299758
    Abstract: Gas oils comprises one or more gas oil bases obtained by subjecting specific fractions from distilled petroleum fractions to hydrogenating treatment under specific conditions and optionally a small amount of a straight kerosene or gas oil. The gas oils have a sulfur concentration of 350 ppm or below.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: October 9, 2001
    Assignee: Nippon Mitsubishi Oil Corporation
    Inventors: Hajime Okazaki, Katsuhiko Ishikawa, Michiaki Adachi, Toshio Waku
  • Patent number: 5812041
    Abstract: A terminal housing mounting structure adapted for use with an electromagnetic switch includes a terminal housing mounted to a switch cover, and a terminal bolt that passes through the terminal housing and the switch cover. The terminal housing has an alignment groove that receives a lug plate in a predetermined orientation. A cylindrical end portion of the switch cover and a cylindrical end portion of the terminal housing are provided with engagable sawteeth equally spaced apart from one another so that the terminal housing is angularly displaceable and releaseably engagable with respect to the switch cover in a plurality of angular increments.
    Type: Grant
    Filed: August 23, 1996
    Date of Patent: September 22, 1998
    Assignee: Mitsuba Electric Manufacturing Co., Ltd.
    Inventors: Katsuhiko Ishikawa, Hitoshi Ono
  • Patent number: 4904181
    Abstract: The present invention relates to a combustion equipment to be employed for heating in domestic use or the like. The combustion equipment is provided with an air control cylinder having a closed bottom surface inwards of an inner flame cylinder, and an outer control cylinder inwards of a vaporizing portion, and accordingly, radical deterioration of the CO/CO.sub.2 characteristic can be prevented. Furthermore, the air control cylinder is divided into plural stages one above the other and has a through aperture in the lowermost stage connecting said lowermost stage with an inner air path, and at the same time, the outer control cylinder is formed with through holes. Therefore, the combustion equipment of the present invention has a large range of adjustment the combustion volume, and is safe and comfortable in use.
    Type: Grant
    Filed: September 28, 1988
    Date of Patent: February 27, 1990
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Katsuhiko Uno, Katsuhiko Ishikawa, Shojiro Inoue
  • Patent number: 4790746
    Abstract: The present invention relates to a combustion equipment to be employed for heating in domestic use or the like. The combustion equipment is provided with an air control cylinder having a closed bottom surface inwards of an inner flame cylinder, and an outer control cylinder inwards of a vaporizing portion, and accordingly, radical deterioration of the CO/CO.sub.2 characteristic can be prevented. Furthermore, the air control cylinder is divided into plural stages one above the other and has a through aperture in the lowermost stage connecting said lowermost stage with an inner air path, and at the same time, the outer control cylinder is formed with through holes. Therefore, the combustion equuipment of the present invention has a large range of adjustment of the combustion volume, and is safe and comfortable in use.
    Type: Grant
    Filed: March 19, 1987
    Date of Patent: December 13, 1988
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Katsuhiko Uno, Katsuhiko Ishikawa, Shojiro Inoue
  • Patent number: 4603970
    Abstract: An apparatus for inhibiting the copying of confidential documents is disclosed. Confidential documents are treated with an infrared ray-absorbing agent. The apparatus for inhibiting the copying of confidential documents is comprised of a means to detect the presence of the infrared ray-absorbing agent, and a means to stop a copying operation upon detection of the agent or a means to start a control system to make the documents unreadable. Documents may also be provided with a metal layer. The apparatus is then comprised of a means to detect the presence of the metal layer and a means to stop a copying operation or to start a control system adapted to make copied materials undistinguishable or unreadable upon detection of the metal layer.
    Type: Grant
    Filed: June 30, 1983
    Date of Patent: August 5, 1986
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Koichi Aota, Katsuhiko Ishikawa, Naoki Yokoi
  • Patent number: 4465457
    Abstract: A liquid fuel burning device suitable for kerosene stove, kerosene kitchen range or the like. The device has an inner and outer flame sleeves each having a multiplicity of pores and a wick interposed between these sleeves. The wick has a fuel evaporating portion projectable into the annular burning space formed between these sleeves. At least one of these sleeves is provided with at least one vertical row of air pores in its portion facing the fuel evaporating portion of the wick. Above the region of vertical row of air pores, formed is a horizontal row of air pores having a multiplicity of pores arranged at a higher density than the pores in the other portion of the wall. In the case where the vertical and horizontal rows of air pores are formed in the inner flame sleeve, a partition plate having apertures is attached to the inner side of the inner flame sleeve at a level above the horizontal row or air pores.
    Type: Grant
    Filed: October 2, 1981
    Date of Patent: August 14, 1984
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Katsuhiko Ishikawa, Yoshitaka Kawasaki, Motoo Yotsuya
  • Patent number: 4071996
    Abstract: A method of maintaining the load bearing integrity of a pre-existing reinforced concrete post during earthquake tremors wherein a sheet metal band is placed about the post and then made integral thereto by inserting a hardenable bonding agent between the band and the post.
    Type: Grant
    Filed: September 10, 1975
    Date of Patent: February 7, 1978
    Assignee: Kajima Kensetsu Kabushiki Kaisha
    Inventors: Kiyoshi Muto, Toshihiko Hisada, Nobutsugu Ohmori, Satoshi Bessho, Naoharu Mori, Katsuhiko Ishikawa