Patents by Inventor Takeshi Kuwana
Takeshi Kuwana 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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Publication number: 20240142789Abstract: Disclosed is an optical system including: a light source configured to emit light; an irradiation optical system including a diffractive optical element on which the light is incident, the irradiation optical system being configured to apply illumination light in which a plurality of diffracted lights generated by the diffractive optical element are distributed; a flow cell in which a sample containing cells is caused to flow to a position at which the illumination light is applied by the irradiation optical system; and a light receiver configured to receive light generated from each cell flowing in the flow cell, upon application of the illumination light by the irradiation optical system. The illumination light includes zero-order diffracted light whose relative intensity relative to another diffracted light is not greater than 10 times. The irradiation optical system applies the illumination light to a position through which the cell in the flow cell passes.Type: ApplicationFiled: October 27, 2023Publication date: May 2, 2024Applicant: SYSMEX CORPORATIONInventors: Takuya KUWANA, Takeshi SUGIYAMA, Kazuhiro YAMADA, Ayato TAGAWA
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Patent number: 6098834Abstract: A drinking receptacle cover comprising a slant cover plate having a top surface and a bottom surface and covering a heat insulating cup at the open top; a rim surrounding the cover plate; a valve assembly having a valve element for opening and closing a spout formed at a lowest level portion of the cover plate adjacent to the rim; a push rod for operating the valve assembly; and a return spring for urging the push rod in the anti-actuating direction. The push rod is disposed to penetrate an insertion opening formed in the rim to be retractable along the bottom surface of the cover plate. An actuating lever which is engaged with the outer end of the push rod to advance it into the inside of the rim is pivotally located on the outer side of the rim. The actuating lever has an actuating section extending along the outer side of the receptacle. The valve assembly has an engaging arm to be engaged with the push rod and a closing arm having the valve element at the free end.Type: GrantFiled: February 9, 1999Date of Patent: August 8, 2000Assignee: Nippon Sanso CorporationInventors: Kunio Hatsumoto, Yasuhiro Kowa, Takeshi Kuwana
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Patent number: 5596921Abstract: A thermally insulated cooking device, including an insulated container, a cooking spot suspended inside the insulated cooking container, an insulated outer lid which closes off an upper opening of the insulated container, and an inner lid for closing off an upper opening of the cooking pot. Further included is a heat retaining material that can be heated by microwaves, which is removably attached to an inner face of the insulated outer lid. By attaching the heat retaining material, after it has been heated in a microwave oven, a temperature drop inside the insulated container can be substantially and safely prevented since heat radiates from the heat retaining material into the insulated container. Moreover the heat retaining material can be safely handled.Type: GrantFiled: April 30, 1996Date of Patent: January 28, 1997Assignee: Nippon Sanso CorporationInventors: Takeshi Kuwana, Yoshiya Nishino, Yasuhiko Komiya, Kunio Matsuda
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Patent number: 5251542Abstract: In a heat insulating cooking vessel wherein a cooking pot with a lid element is contained in a freely removeable fashion within the inner space of a heat insulating container consisting of a heat insulating container and a lid which closes the mouth portion of this container member, the present invention comprises attachment shafts which are formed projecting outward from both side walls of the container member of the heat insulating container; a grip handle which is attached to the container member via the aforesaid attachment shafts and can be freely raised or lowered; a locking piece which is formed projecting outward from the side of the lid which is positioned above the attachment shafts when the container member is covered by the lid; a concave interlocking portion, which covers the locking piece when the container member is covered with the lid, and which is formed to the attachment parts of the handle grip attached to the sides of the container member; openings formed in the attachment parts of the afType: GrantFiled: March 8, 1993Date of Patent: October 12, 1993Assignee: Nippon Sanso CorporationInventors: Seiichi Itoh, Takeshi Kuwana, Shigeru Tsuchiya
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Patent number: 4990254Abstract: A portable water purifier comprises an outer elongated hollow body having openings formed at the upper and lower portions, a cup adapted to be inserted in the outer elongated hollow body from the lower opening thereof, a filtering elongated hollow body adapted to be inserted in the cup from the upper opening of the outer elongated hollow body, and a cap fitted detachably on the upper portion of the outer elongated hollow body to cover this upper opening. The cup and the filtering elongated hollow body are accommodated in the outer elongated hollow body when the portable water purifier is not used in a portable manner. When this portable water purifier is used, the cup is pulled out from the outer elongated hollow body and is set under the outer elongated hollow body, so that water is poured from the upepr opening of the outer elongated hollow body and is filtered through a filter in the filtering elongated hollow body. The filtered water is stored in the cup.Type: GrantFiled: January 24, 1990Date of Patent: February 5, 1991Assignee: Japan Oxygen Co., Ltd.Inventors: Shoji Toida, Takeshi Kuwana, Kazunori Iwasaki, Tooru Goto
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Patent number: 4669632Abstract: A plate like insulation unit which includes an evacuated bag having two gas impermeable films sealed at peripheries thereof to form the bag and a heat insulating core material charged into the bag. The one gas impermeable film of the bag is a first film having a first metallic foil laminated to extend to the peripheries thereof, and the other gas permeable film is a second film having a metallic layer vapor deposited.Type: GrantFiled: December 3, 1985Date of Patent: June 2, 1987Assignee: Nippon Sanso Kabushiki KaishaInventors: Tamotsu Kawasaki, Takeshi Kuwana, Minoru Morita
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Patent number: D381243Type: GrantFiled: March 29, 1996Date of Patent: July 22, 1997Assignee: Nippon Sanso CorporationInventors: Toru Goto, Takeshi Kuwana, Masashi Yamada, Takashi Kato
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Patent number: D398815Type: GrantFiled: October 9, 1997Date of Patent: September 29, 1998Assignee: Nippon Sanso CorporationInventors: Kunio Hatsumoto, Yasuhiro Kowa, Takeshi Kuwana
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Patent number: D404613Type: GrantFiled: October 20, 1997Date of Patent: January 26, 1999Assignee: Nippon Sanso CorporationInventors: Kunio Hatsumoto, Rikiya Kato, Yasuhiro Kowa, Takeshi Kuwana
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Patent number: D406006Type: GrantFiled: October 20, 1997Date of Patent: February 23, 1999Assignee: Nippon Sanso CorporationInventors: Kunio Hatsumoto, Yasuhiro Kowa, Takeshi Kuwana
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Patent number: D406011Type: GrantFiled: October 8, 1997Date of Patent: February 23, 1999Assignee: Nippon Sanso CorporationInventors: Kunio Hatsumoto, Yasuhiro Kowa, Takeshi Kuwana