Patents by Inventor Masahiko Murayama
Masahiko Murayama 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: 11122961Abstract: An endoscope includes: an objective optical unit; an illumination optical system including an illumination lens; and a distal end portion body included in a distal end portion, and the objective lens barrel includes a first lens barrel and a second lens barrel, the first lens barrel includes a disposition hole, an inward projection portion and an outward projection portion, the second lens barrel includes a reception hole, a light input surface and a first distal end face are arranged in a same plane by a beveled surface of a beveled portion being in surface contact with a lens positioning surface of the inward projection portion, and the first distal end face and a second distal end face are arranged in a same plane by a first barrel positioning surface being in surface contact with an objective optical unit positioning surface.Type: GrantFiled: June 21, 2018Date of Patent: September 21, 2021Assignee: OLYMPUS CORPORATIONInventor: Masahiko Murayama
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Publication number: 20210016075Abstract: A gas feeding/suction valve includes: a cylinder including a conduit opening communicable with a fluid conduit of an endoscope; two coupling members provided at different positions from the conduit opening of the cylinder and connected to respective fluid sources; and an operation member provided inside the cylinder and including a shaft slidably disposed in a space forming respective fluid paths through which openings of the two coupling members and the conduit opening communicate with each other, and the cylinder includes a sounding body provided near at least one of two ventilation ports, through which the fluid paths communicate with an outside of the cylinder, and configured to generate a warning sound when a fluid flows in a direction opposite to a direction in which a fluid generated from the fluid source is supposed to flow.Type: ApplicationFiled: October 7, 2020Publication date: January 21, 2021Applicant: OLYMPUS CORPORATIONInventors: Sho NAKAJIMA, Masahiko MURAYAMA
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Publication number: 20200341263Abstract: There is provided a laminated lens array in which a first lens element arranged on a distal end side and a second lens element arranged on a proximal end side are stuck and laminated in a lamination direction, wherein outer faces of a laminated body including the first lens element and the second lens element are located in the lamination direction and have concaves formed being recessed toward a center of the laminated body at least on parts of the outer faces in the lamination direction.Type: ApplicationFiled: July 8, 2020Publication date: October 29, 2020Applicant: OLYMPUS CORPORATIONInventors: Masahiko MURAYAMA, Takuto YOSHINAGA
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Patent number: 10478049Abstract: An endoscope includes a distal end rigid portion including a through hole, an elongated image pickup section, a distal end of which is inserted and fixed in the through hole, a light guide fiber bundle, distal end molded portions of which are inserted and fixed in the through hole, the light guide fiber bundle being formed as one bundle from a proximal end portion to a predetermined branched portion on a distal end side, and formed by being branched into a plurality of bundles on a distal end side with respect to the predetermined branched portion; a plurality of first cover tubes made of e-PTFE, and respectively covering the plurality of bundles from the distal end molded portions to the predetermined branched portion; and one second cover tube of a material other than the e-PTFE, covering the one bundle from the predetermined branched portion to the proximal end portion.Type: GrantFiled: July 11, 2018Date of Patent: November 19, 2019Assignee: OLYMPUS CORPORATIONInventor: Masahiko Murayama
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Publication number: 20180325361Abstract: An endoscope includes a distal end rigid portion including a through hole, an elongated image pickup section, a distal end of which is inserted and fixed in the through hole, a light guide fiber bundle, distal end molded portions of which are inserted and fixed in the through hole, the light guide fiber bundle being formed as one bundle from a proximal end portion to a predetermined branched portion on a distal end side, and formed by being branched into a plurality of bundles on a distal end side with respect to the predetermined branched portion; a plurality of first cover tubes made of e-PTFE, and respectively covering the plurality of bundles from the distal end molded portions to the predetermined branched portion; and one second cover tube of a material other than the e-PTFE, covering the one bundle from the predetermined branched portion to the proximal end portion.Type: ApplicationFiled: July 11, 2018Publication date: November 15, 2018Applicant: OLYMPUS CORPORATIONInventor: Masahiko MURAYAMA
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Publication number: 20180303320Abstract: An endoscope includes: an objective optical unit; an illumination optical system including an illumination lens; and a distal end portion body included in a distal end portion, and the objective lens barrel includes a first lens barrel and a second lens barrel, the first lens barrel includes a disposition hole, an inward projection portion and an outward projection portion, the second lens barrel includes a reception hole, a light input surface and a first distal end face are arranged in a same plane by a beveled surface of a beveled portion being in surface contact with a lens positioning surface of the inward projection portion, and the first distal end face and a second distal end face are arranged in a same plane by a first barrel positioning surface being in surface contact with an objective optical unit positioning surface.Type: ApplicationFiled: June 21, 2018Publication date: October 25, 2018Applicant: OLYMPUS CORPORATIONInventor: Masahiko MURAYAMA
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Patent number: 9615724Abstract: A gas feeding duct, a suction duct, a first valve that is installed in the gas feeding duct and opens a flow passage only when gas feeding is underway, and a second valve that is installed in a part of the flow passage on an upstream side relative to the first valve, and opens the flow passage K along with gas feeding and closes the flow passage at least when suction is underway are included, and when neither gas feeding nor gas suctioning is underway, the second valve closes the flow passage in conjunction with the first valve unexpectedly opening the flow passage as a result of pressure variation in a part of the gas feeding duct on a downstream side relative to the first valve and thereby prevents reverse flow of a fluid to the upstream side relative to the second valve.Type: GrantFiled: July 6, 2015Date of Patent: April 11, 2017Assignee: OLYMPUS CORPORATIONInventor: Masahiko Murayama
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Publication number: 20150305599Abstract: A gas feeding duct, a suction duct, a first valve that is installed in the gas feeding duct and opens a flow passage only when gas feeding is underway, and a second valve that is installed in a part of the flow passage on an upstream side relative to the first valve, and opens the flow passage K along with gas feeding and closes the flow passage at least when suction is underway are included, and when neither gas feeding nor gas suctioning is underway, the second valve closes the flow passage in conjunction with the first valve unexpectedly opening the flow passage as a result of pressure variation in a part of the gas feeding duct on a downstream side relative to the first valve and thereby prevents reverse flow of a fluid to the upstream side relative to the second valve.Type: ApplicationFiled: July 6, 2015Publication date: October 29, 2015Applicant: OLYMPUS CORPORATIONInventor: Masahiko MURAYAMA
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Publication number: 20150181898Abstract: A frozen heated gyoza dumpling easy to cook by heating after freeze preservation and superior in the texture can be obtained by attaching a batter liquid containing 70-90 wt % of water to at least a surface to be baked of the gyoza dumpling at a proportion of 18-30 parts by weight per 100 parts by weight of the gyoza dumpling. In addition, a manufacturing method thereof is provided.Type: ApplicationFiled: December 30, 2014Publication date: July 2, 2015Applicant: AJINOMOTO CO., INC.Inventors: Kimihiro Tamaki, Masahiko Murayama, Takahiro Ito, Keisuke Imaizumi
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Publication number: 20150112131Abstract: An adaptor for an endoscope includes: an endoscope attachment portion; a duct body that communicates with a treatment instrument insertion port of the endoscope; a duct member; a water feeding duct cover including an insulating member, the water feeding duct cover covering at least a part of an outer surface of the duct member and including an extension portion that spreads toward a proximal end side; and a duct body cover including an insulating member, the duct body cover covering at least a part of an outer surface of the duct body, and covering the extension portion of the water feeding duct cover so as to prevent the water feeding duct cover from moving to a distal end side of the duct member and coming off.Type: ApplicationFiled: November 19, 2014Publication date: April 23, 2015Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventor: Masahiko MURAYAMA
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Patent number: 8854933Abstract: An information processing apparatus includes a connector electrically connected to a drive unit in a state where the drive unit is connected to the information processing apparatus, a detector configured to detect an operation performed on a specific button disposed on the drive unit based on a change in a voltage of a specific pin of the connector in a state where the drive unit is connected to the information processing apparatus and an operational voltage is not applied to the drive unit and a power controller configured to start applying the operational voltage to the drive unit via the connector in response to the operation detected by the detector.Type: GrantFiled: February 6, 2013Date of Patent: October 7, 2014Assignee: Fujitsu LimitedInventor: Masahiko Murayama
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Patent number: 8654184Abstract: An electronic endoscope includes an insertion portion including an insulative distal end hard portion main body at a distal end thereof, an operation portion provided at a proximal end portion of the insertion portion and including a connector connection electrically connected to a ground portion, a ground metal member provided between the main body and the operation portion, forming a structure of the insertion portion, and being electrically conductive to the ground portion through the connector connection, an observation optical system including an optical element and a frame member having conductive properties and holding the optical element, and being extended from the distal end of the insertion portion toward the operation portion, and a conductive connecting portion allowing the frame member of the observation optical system to become electrically conductive with respect to the ground metal member.Type: GrantFiled: August 13, 2012Date of Patent: February 18, 2014Assignee: Olympus Medical Systems Corp.Inventors: Masahiko Murayama, Kunihiko Hijihara
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Publication number: 20130050457Abstract: An electronic endoscope includes an insertion portion including an insulative distal end hard portion main body at a distal end thereof, an operation portion provided at a proximal end portion of the insertion portion and including a connector connection electrically connected to a ground portion, a ground metal member provided between the main body and the operation portion, forming a structure of the insertion portion, and being electrically conductive to the ground portion through the connector connection, an observation optical system including an optical element and a frame member having conductive properties and holding the optical element, and being extended from the distal end of the insertion portion toward the operation portion, and a conductive connecting portion allowing the frame member of the observation optical system to become electrically conductive with respect to the ground metal member.Type: ApplicationFiled: August 13, 2012Publication date: February 28, 2013Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Masahiko MURAYAMA, Kunihiko HIJIHARA
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Patent number: 7136126Abstract: An optical compensatory sheet comprises a cellulose acetate support and an optically anisotropic layer. The optically anisotropic layer contains a discotic liquid crystal molecule. The cellulose acetate support has a Bth550 birefringence in the range of 0.0007 to 0.004.Type: GrantFiled: September 29, 2003Date of Patent: November 14, 2006Assignee: Fuji Photo Film Co., Ltd.Inventors: Masahiko Murayama, Yosuke Nishiura, Yoshiharu Yabuki, Hiroyuki Mori
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Publication number: 20060051526Abstract: The present invention relates to a process for producing a cellulose acylate film, and an optical compensation sheet, a polarizing plate, and an image display device employing the cellulose acylate film. The process for producing a cellulose acylate film of the present invention is characterized by including a step of preparing a cellulose acylate solution containing 0.01 to 20 parts by weight of an aromatic compound having at least two aromatic rings relative to 100 parts by weight of a cellulose acylate, a step of casting, and a step of blowing a gas on the cast cellulose acylate solution at an effective wind speed of at least 10 m/min during a first half of drying prior to peel-off.Type: ApplicationFiled: October 23, 2003Publication date: March 9, 2006Applicant: Fuji Photo Film Co., Ltd.Inventors: Nobutaka Fukagawa, Masahiko Murayama, Yoshihiko Murayama, Honoka Murayama, Kurumi Murayama, Eiichiro Aminaka, Hiroshi Kawamoto, Satoshi Sakamaki, Hiroyuki Kawanishi
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Publication number: 20040233363Abstract: An optical compensatory sheet comprises a cellulose acetate support and an optically anisotropic layer. The optically anisotropic layer contains a discotic liquid crystal molecule. The cellulose acetate support has a Bth550 birefringence in the range of 0.0007 to 0.004.Type: ApplicationFiled: September 29, 2003Publication date: November 25, 2004Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Masahiko Murayama, Yosuke Nishiura, Yoshiharu Yabuki, Hiroyuki Mori
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Patent number: 6778242Abstract: An optical compensatory sheet comprises a cellulose acetate support and an optically anisotropic layer. The optically anisotropic layer contains a discotic liquid crystal molecule. The cellulose acetate support has a Bth550 birefringence in the range of 0.0007 to 0.004.Type: GrantFiled: December 22, 1999Date of Patent: August 17, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Masahiko Murayama, Yosuke Nishiura, Yoshiharu Yabuki, Hiroyuki Mori
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Patent number: 6630973Abstract: An optically anisotropic cellulose ester film is disclosed. The film contains a discotic compound in an amount of 0.01 to 20 weight parts based on 100 weight parts of cellulose ester. The film has a Rth550 retardation value in the range of 60 to 1,000 nm. The cellulose ester film can be used in an optical compensatory sheet, an ellipsoidal polarizing plate and a liquid crystal display.Type: GrantFiled: March 22, 2000Date of Patent: October 7, 2003Assignee: Fuji Photo Film Co., Ltd.Inventors: Koushin Matsuoka, Ken Kawata, Masahiko Murayama
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Patent number: 6139785Abstract: The present invention provides a cellulose ester composition, containing 1 to 99% by weight of cellulose triacetate prepared by substituting hydroxyl groups of cellulose with acetyl and having a degree of substitution with acetyl, DSace, which satisfies the relationship: 2.7.ltoreq.DSace.ltoreq.3.0, and 99 to 1% by weight of a mixed fatty acid ester of cellulose prepared by substituting hydroxyl groups of cellulose with acetyl and acyl groups having three or more carbon atoms and having degrees of substitution with acetyl and acyl groups having three or more carbon atoms, DSace and DSacyl, respectively, which satisfy the relationships: (I) 2.20.ltoreq.DSace.ltoreq.2.95, (II) 0.05.ltoreq.DSacyl.ltoreq.0.80 and (III) 2.60.ltoreq.DSace+DSacyl.ltoreq.3.00.Type: GrantFiled: March 19, 1999Date of Patent: October 31, 2000Assignee: Daicel Chemical Industries, Ltd.Inventors: Yuichiro Shuto, Hiroki Taniguchi, Yukiko Nakanishi, Masahiko Murayama
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Patent number: 5914220Abstract: A polyester support in which a difference between orientation angles in both the side edges and that in the center thereof is from 0.degree. to 40.degree., whereby a photographic film having excellent flatness after heat treatment is provided.Type: GrantFiled: May 19, 1997Date of Patent: June 22, 1999Assignee: Fuji Photo Film Co., Ltd.Inventor: Masahiko Murayama