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).
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Patent number: 9756689Abstract: 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: GrantFiled: August 9, 2016Date of Patent: September 5, 2017Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Shigeru Ido, Katsuhiko Ishikawa, Hirohiko Nojiri
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Publication number: 20170064783Abstract: 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: ApplicationFiled: August 9, 2016Publication date: March 2, 2017Inventors: Shigeru IDO, Katsuhiko ISHIKAWA, Hirohiko NOJIRI
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Patent number: 8329973Abstract: 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: GrantFiled: January 18, 2012Date of Patent: December 11, 2012Assignees: 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
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Publication number: 20120116139Abstract: 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: ApplicationFiled: January 18, 2012Publication date: May 10, 2012Applicants: JAPAN COOPERATION CENTER, PETROLEUM (JCCP), KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: TOMOYUKI INUI, MASAYUKI INUI, MOHAMMAD A. ALI, MUHAMMAD A. AL-SALEH, SYED A. ALI, KHALID AL-NAWAD, TSUTOMO OKAMOTO, KATSUHIKO ISHIKAWA, MINORU HATAYAMA
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Patent number: 7699256Abstract: [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: GrantFiled: October 2, 2006Date of Patent: April 20, 2010Assignee: Shimano, Inc.Inventors: Fujita Kimura, Katsuhiko Ishikawa
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Publication number: 20100029467Abstract: 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: ApplicationFiled: July 30, 2008Publication date: February 4, 2010Inventors: Tomoyuki Inui, Masayuki Inui, Mohammad A. Ali, Muhammad A. Al-Saleh, Syed A. Ali, Khalid Al-Nawad, Tsutomu Okamoto, Katsuhiko Ishikawa, Minoru Hatayama
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Publication number: 20090277989Abstract: [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: ApplicationFiled: October 2, 2006Publication date: November 12, 2009Inventors: Fujita Kimura, Katsuhiko Ishikawa
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Patent number: 6346756Abstract: 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: GrantFiled: September 26, 2000Date of Patent: February 12, 2002Assignee: Mitsuba CorporationInventors: Katsuhiko Ishikawa, Hiroshi Mori
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Patent number: 6299758Abstract: 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: GrantFiled: November 10, 1999Date of Patent: October 9, 2001Assignee: Nippon Mitsubishi Oil CorporationInventors: Hajime Okazaki, Katsuhiko Ishikawa, Michiaki Adachi, Toshio Waku
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Patent number: 5812041Abstract: 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: GrantFiled: August 23, 1996Date of Patent: September 22, 1998Assignee: Mitsuba Electric Manufacturing Co., Ltd.Inventors: Katsuhiko Ishikawa, Hitoshi Ono
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Patent number: 4904181Abstract: 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: GrantFiled: September 28, 1988Date of Patent: February 27, 1990Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Katsuhiko Uno, Katsuhiko Ishikawa, Shojiro Inoue
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Patent number: 4790746Abstract: 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: GrantFiled: March 19, 1987Date of Patent: December 13, 1988Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Katsuhiko Uno, Katsuhiko Ishikawa, Shojiro Inoue
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Patent number: 4603970Abstract: 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: GrantFiled: June 30, 1983Date of Patent: August 5, 1986Assignee: Fuji Xerox Co., Ltd.Inventors: Koichi Aota, Katsuhiko Ishikawa, Naoki Yokoi
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Patent number: 4465457Abstract: 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: GrantFiled: October 2, 1981Date of Patent: August 14, 1984Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Katsuhiko Ishikawa, Yoshitaka Kawasaki, Motoo Yotsuya
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Patent number: 4071996Abstract: 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: GrantFiled: September 10, 1975Date of Patent: February 7, 1978Assignee: Kajima Kensetsu Kabushiki KaishaInventors: Kiyoshi Muto, Toshihiko Hisada, Nobutsugu Ohmori, Satoshi Bessho, Naoharu Mori, Katsuhiko Ishikawa