Patents by Inventor Kenichi Kikuchi
Kenichi Kikuchi 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: 11828366Abstract: A sealing device includes a reinforcement ring and an annular elastic body portion including a main body covering the reinforcement ring, a lip waist portion including an inner circumferential edge portion of the main body, a main lip extending from the lip waist portion to a first target side to be sealed and is to be in slidable contact with a rotary shaft, and a second dust lip extending from the lip waist portion to a second target side opposite to the first target side relative to the sealing device and being provided relative to the main lip with an annular space between the second dust lip and the main lip. The second dust lip includes a first lip slide portion being to be in slidable contact with the rotary shaft, a first protrusion formed on an inner circumferential surface of the second dust lip and closer to the first lip slide portion, and a second protrusion formed on the inner circumferential surface and closer to the lip waist portion than the first protrusion.Type: GrantFiled: February 28, 2020Date of Patent: November 28, 2023Assignee: NOK CORPORATIONInventor: Kenichi Kikuchi
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Publication number: 20220243823Abstract: A sealing device seals a gap between a housing and a rotating body disposed in a hole of the housing and separates an internal space of the housing from an atmosphere side. The sealing device includes a stationary sealing member and a rotational sealing member. The rotational sealing member includes a hollow cylindrical portion into which a cylindrical portion of the rotating body is to be interference fitted, and a flange portion disposed closer to an internal space side than the hollow cylindrical portion. The stationary sealing member includes a mounted hollow cylindrical portion that is to be mounted to the housing, and a seal lip being to be brought into slidable contact with an outer peripheral surface of the hollow cylindrical portion of the rotational sealing member. The rotational sealing member further includes an auxiliary lip mounted to the flange portion, the auxiliary lip being to be brought into slidable contact with an inner peripheral surface of the mounted hollow cylindrical portion.Type: ApplicationFiled: October 17, 2019Publication date: August 4, 2022Inventors: Hiroki MATSUI, Kenichi KIKUCHI, Yuto MANAKA, Saki ITO
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Publication number: 20220178448Abstract: A sealing device includes a reinforcement ring and an annular elastic body portion including a main body covering the reinforcement ring, a lip waist portion including an inner circumferential edge portion of the main body, a main lip extending from the lip waist portion to a first target side to be sealed and is to be in slidable contact with a rotary shaft, and a second dust lip extending from the lip waist portion to a second target side opposite to the first target side relative to the sealing device and being provided relative to the main lip with an annular space between the second dust lip and the main lip. The second dust lip includes a first lip slide portion being to be in slidable contact with the rotary shaft, a first protrusion formed on an inner circumferential surface of the second dust lip and closer to the first lip slide portion, and a second protrusion formed on the inner circumferential surface and closer to the lip waist portion than the first protrusion.Type: ApplicationFiled: February 28, 2020Publication date: June 9, 2022Applicant: NOK CORPORATIONInventor: Kenichi KIKUCHI
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Patent number: 10507552Abstract: A solder material includes an alloy of at least five elements including Sn, Cu, Sb, and In, and 20 mass % or less of Ag. The solidus temperature of the solder material is higher than 290° C., the liquidus temperature of the solder material is 379° C. or less and is higher than the solidus temperature, and the temperature difference between the liquidus temperature and the solidus temperature is 70° C. or less.Type: GrantFiled: February 3, 2016Date of Patent: December 17, 2019Assignee: NIHON DEMPA KOGYO CO., LTD.Inventors: Toshimasa Tsuda, Kenichi Kikuchi, Tomotaka Kuroda, Daisuke Nishiyama, Hiroyuki Sasaki, Makoto Hatano, Hiroya Ishikawa
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Publication number: 20170345993Abstract: A piezoelectric device includes a piezoelectric vibrating piece, a base, a wire, a conductive adhesive, and a buffer layer. The piezoelectric vibrating piece includes excitation electrodes and extraction electrodes at both principal surfaces. The base includes the piezoelectric vibrating piece and a first wiring electrode and a second wiring electrode connected to the extraction electrodes. The wire connects the extraction electrode on a surface opposite to a side of the base among the extraction electrodes to one wiring electrode of the first wiring electrode and the second wiring electrode. The conductive adhesive connects the extraction electrode at the base side among the extraction electrodes to the other wiring electrode among the first wiring electrode and the second wiring electrode. The buffer layer reduces stress of the wire between the extraction electrode to which the wire is connected and the piezoelectric vibrating piece.Type: ApplicationFiled: May 19, 2017Publication date: November 30, 2017Applicant: NIHON DEMPA KOGYO CO., LTD.Inventor: KENICHI KIKUCHI
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Publication number: 20170288123Abstract: A lead-out wiring, which is connected to a comb-shaped electrode formed on a principal surface of a piezoelectric substrate and is disposed to extend to an outer edge of the piezoelectric substrate an outer surrounding wall layer, which is arranged surrounding an outer periphery of the piezoelectric substrate including the lead-out wiring and forms a hollow portion that serves as an operation space for the comb-shaped electrode, and a top board, which bridges the outer surrounding wall layer to seal the hollow portion, are included.Type: ApplicationFiled: July 31, 2015Publication date: October 5, 2017Applicant: NIHON DEMPA KOGYO CO., LTD.Inventors: Makoto HATANO, Kenichi KIKUCHI, Hiroyuki SASAKI, Toshimasa TSUDA
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Publication number: 20160226466Abstract: A solder material includes an alloy of at least five elements including Sn, Cu, Sb, and In, and 20 mass % or less of Ag. The solidus temperature of the solder material is higher than 290° C., the liquidus temperature of the solder material is 379° C. or less and is higher than the solidus temperature, and the temperature difference between the liquidus temperature and the solidus temperature is 70° C. or less.Type: ApplicationFiled: February 3, 2016Publication date: August 4, 2016Applicant: NIHON DEMPA KOGYO CO., LTD.Inventors: TOSHIMASA TSUDA, KENICHI KIKUCHI, TOMOTAKA KURODA, DAISUKE NISHIYAMA, HIROYUKI SASAKI, MAKOTO HATANO, HIROYA ISHIKAWA
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Patent number: 9178226Abstract: A fuel cell sealing structure has a power generating body, and first and second separators arranged in both sides in a thickness direction of the power generating body. On a surface in one side in a thickness direction of the first separator, formed integrally first and second sealing protrusions respectively brought into close contact with an outer peripheral portion of the power generating body and the second separator in an outer peripheral side of the first sealing protrusion, and a short circuit prevention rib protruding in line with the first and second sealing protrusions by an electrically insulating rubber-like elastic material. On a surface in another side thereof, formed integrally a third sealing protrusion brought into close contact with a surface in an opposite side to the power generating body in the second separator, by the electrically insulating rubber-like elastic material.Type: GrantFiled: May 27, 2010Date of Patent: November 3, 2015Assignee: NOK CorporationInventors: Takeshi Masaka, Yoshihiro Kurano, Shinichiro Taguchi, Kenichi Kikuchi, Tetsuya Urakawa
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Publication number: 20150155849Abstract: A surface mounting quartz crystal unit includes a ceramic substrate, a holding terminal, a metal cover, a signal line terminal and a ground terminal, and a metal layer. The holding terminal holds a crystal resonator on the substrate. The metal cover is arranged to cover the crystal resonator. The signal line terminal and a ground terminal are formed on a rear surface of the substrate. The metal layer bonds the substrate to the metal cover at a part on a front surface of the substrate. The part is in contact with the metal cover. The substrate has a first through via inside the substrate. The first through via connects the holding terminal to the signal line terminal. The substrate has a through conductor at the substrate. The through conductor connects the metal layer to the ground terminal.Type: ApplicationFiled: October 14, 2014Publication date: June 4, 2015Inventor: KENICHI KIKUCHI
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Display apparatus, quantity-of-light adjusting method for display apparatus and electronic equipment
Patent number: 8830157Abstract: A display apparatus includes display means for displaying an image, a light source that irradiates light to the display means, and control means for controlling the quantity of light of the light source with pulse width modulation. The control means controls the quantity of light of the light source based on the ratio of the light-on period with pulse width modulation to the light-off period when the light source is turned off.Type: GrantFiled: October 7, 2008Date of Patent: September 9, 2014Assignee: Sony CorporationInventors: Hiroaki Ichikawa, Kenichi Kikuchi, Kimio Hatajiri -
Patent number: 8729775Abstract: An exemplary piezoelectric vibrating device includes a piezoelectric vibrating piece that vibrates when electrically energized. A first package plate has a main recess in which the piezoelectric vibrating piece is placed, and a peripheral surface surrounding the recess. A second package plate is bonded to the peripheral surface of the first package plate in airtight manner. A band of adhesive bonds the first package plate to the second package plate. The adhesive band surrounds the peripheral surface. Between the adhesive and the main recess is a band of metal film. The band of metal film prevents gas, generated from the adhesive, from flowing into the recess. The band of metal film surrounds the peripheral surface and is disposed inboard of the band of adhesive.Type: GrantFiled: June 20, 2011Date of Patent: May 20, 2014Assignee: Nihon Dempa Kogyo Co., Ltd.Inventors: Mitoshi Umeki, Ryoichi Ichikawa, Yoshiaki Amano, Kenji Kamezawa, Kenichi Kikuchi, Noritsugu Matsukura
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Publication number: 20130317759Abstract: An evaluation indicator is calculated to determine whether or not servicing is required, from data for evaluation for a valve that is subject to servicing. An ID of the valve is recorded in a recording area AR1. A pre-servicing evaluation indicator for the valve is recorded in a recording area AR2. A post-servicing evaluation indicator for the valve is recorded in a recording area AR3. If only a pre-servicing evaluation indicator are recorded corresponding to the valve, then a status wherein the service has not been completed is presented together with the evaluation results that are indicated by these pre-servicing evaluation indicators, where if both a pre-servicing evaluation indicator and a post-servicing evaluation indicator are recorded, then a status that service has been completed is presented together with the evaluation results showing the pre-servicing evaluation indicator and the post-servicing evaluation indicator.Type: ApplicationFiled: May 24, 2013Publication date: November 28, 2013Applicant: Azbil CorporationInventors: Masato TANAKA, Kenichi KIKUCHI, Isao YAMADA
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Publication number: 20130239708Abstract: A valve-to-be-serviced selecting device is provided with: a simple identification executing portion identifying a service-candidate valve by a method that is relatively non-labor-intensive (a relatively low-cost method), a fine identification executing portion identifying a service-candidate valve by a method that is relatively labor-intensive (a relatively high-cost method), and a valve-to-be-serviced determination processing portion. The valve-to-be-serviced determination processing portion performs the simple identification by the simple identification executing portion for valves 1-1 through 1-n (N valves), and then performs fine identification, through the fine identification executing portion service-candidate valves identified by the simple identification (M valves), to determine those valves to be subjected to servicing from among the valves 1-1 through 1-n.Type: ApplicationFiled: March 12, 2013Publication date: September 19, 2013Applicant: AZBIL CORPORATIONInventors: Masato TANAKA, Kenichi KIKUCHI, Isao YAMADA
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Patent number: 8514320Abstract: An electronic camera includes a shutter button. When the shutter button is half-depressed, a focal level of an object is determined on the basis of an image signal outputted from an imaging device, and a moving start position of a focus lens is settled on the basis of the determination result. More specifically, a correction amount of the moving start position is settled in accordance with the determination result of the focal level, and a position that subtracts the correction amount from a lens position at a time the shutter button being half-depressed is settled as the moving start position. The higher the focal level, the more reduced the correction amount. The focus lens gradually moves toward the imaging device from the settled moving start position, and a focal position is specified on the basis of the image signal outputted from the imaging device at each step.Type: GrantFiled: May 11, 2010Date of Patent: August 20, 2013Assignee: Sanyo Electric Co., Ltd.Inventors: Kenichi Kikuchi, Kazuhiko Sugimoto
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Patent number: 8415858Abstract: Piezoelectric vibrating pieces are disclosed having selectively roughened surfaces. An exemplary piece is made of a piezoelectric material configured as a piezoelectric substrate. The piece also includes at least one excitation electrode and at least one extraction electrode. The substrate has opposing main surfaces initially having low surface roughness. At least one main surface is formed in a mesa or reverse mesa manner, wherein the central region has a different thickness than the peripheral region. The central region has relatively low surface roughness (irregular unevenness), while the peripheral region has relatively high surface roughness. The excitation electrode is formed on the central region (mesa or reverse mesa) while the extraction electrode (connected to the excitation electrode) is formed on the peripheral region.Type: GrantFiled: February 18, 2011Date of Patent: April 9, 2013Assignee: Nihon Dempa Kogyo Co., Ltd.Inventors: Manabu Ishikawa, Kenji Shimao, Hiroyuki Sasaki, Mitoshi Umeki, Kenichi Kikuchi
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Patent number: 8305467Abstract: An image pickup apparatus includes an image pickup unit which forms a subject image on an image pickup device through an optical system to generate an image pickup signal; an adjustment unit which changes an optical zoom magnification with respect to the subject image; and a control unit which records image data as a moving image in a memory in response to a moving image recording command, the image data being obtained based on the image pickup signal, and stops recording the moving image for a time period during which the zoom magnification is changed.Type: GrantFiled: August 27, 2010Date of Patent: November 6, 2012Assignee: SANYO Electric Co., Ltd.Inventor: Kenichi Kikuchi
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Patent number: 8174487Abstract: The disclosure includes various embodiments including, for example: (i) a color liquid crystal display unit has a color display panel of transmissive type and a backlight unit placed behind the color display panel; (ii) a backlight unit has a plurality of LEDs connected in series and a drive unit to drive the LEDs; (iii) a temperature sensor to detect the temperature of LEDs; (iv) groups of LEDs are arranged in regions where the display unit has the same temperature; and (v) a drive unit controls current to be supplied to LEDs in response to temperature detected by the temperature sensor so that the LEDs retain the constant brightness even when the LEDs fluctuate in temperature.Type: GrantFiled: February 12, 2009Date of Patent: May 8, 2012Assignee: Sony CorporationInventors: Norimasa Furukawa, Kenichi Kikuchi, Hiroaki Ichikawa
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Publication number: 20120107718Abstract: A fuel cell sealing structure has a power generating body, and first and second separators arranged in both sides in a thickness direction of the power generating body. On a surface in one side in a thickness direction of the first separator, formed integrally first and second sealing protrusions respectively brought into close contact with an outer peripheral portion of the power generating body and the second separator in an outer peripheral side of the first sealing protrusion, and a short circuit prevention rib protruding in line with the first and second sealing protrusions by an electrically insulating rubber-like elastic material. On a surface in another side thereof, formed integrally a third sealing protrusion brought into close contact with a surface in an opposite side to the power generating body in the second separator, by the electrically insulating rubber-like elastic material.Type: ApplicationFiled: May 27, 2010Publication date: May 3, 2012Applicant: NOK CORPORATIONInventors: Takeshi Masaka, Yoshihiro Kurano, Shinichiro Taguchi, Kenichi Kikuchi, Tetsuya Urakawa
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Patent number: 8111020Abstract: The present invention is directed to a drive apparatus for a backlight unit (20) in which plural LED (Light Emitting Diode) elements are cascade-connected every three primary colors, which comprises a signal generating unit (44) for generating a signal having an arbitrary amplitude, an adjustment unit (50) for adjusting light emission quantities of groups of LED elements (30) on the basis of the signal which has been generated by the signal generating unit (44), a voltage applying unit (41) for applying a predetermined voltage every the groups of LED elements (30), light emission quantity detecting units (33) for detecting quantities of rays of light which have been emitted from the groups of LED elements (30), calorific value detecting units (32) for detecting calorific values emitted from the groups of LED elements in accordance with the voltage which has been applied to the voltage applying unit (41), and a control unit (50) for controlling the signal generating unit (44) on the basis of light emission quaType: GrantFiled: January 22, 2010Date of Patent: February 7, 2012Assignee: Sony CorporationInventors: Norimasa Furukawa, Hiroaki Ichikawa, Kenichi Kikuchi
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Patent number: D995455Type: GrantFiled: February 26, 2021Date of Patent: August 15, 2023Assignees: Citizen Electronics Co., Ltd., Citizen Watch Co., Ltd.Inventors: Takahiro Hori, Tatsuro Yamada, Kenichi Kikuchi, Yasuaki Kayanuma, Yu Kayanuma