Patents by Inventor Yoshihiro Sawayashiki
Yoshihiro Sawayashiki 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: 20230178107Abstract: Provided are a magnetic tape including a non-magnetic support and a magnetic layer including a ferromagnetic powder, a magnetic tape cartridge and a magnetic tape apparatus including this magnetic tape. An amount of a fluid lubricant collected by wiping a surface of the magnetic layer by a nonwoven fabric is in a range of 5 to 400 ng/m2 as a value per unit area of the surface of the magnetic layer.Type: ApplicationFiled: January 30, 2023Publication date: June 8, 2023Applicant: FUJIFILM CorporationInventors: Shinji TSUJIMOTO, Shunichi HOSHINO, Yoshihiro SAWAYASHIKI
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Patent number: 11495256Abstract: The magnetic recording medium includes a non-magnetic support, and a magnetic layer including a ferromagnetic powder. The ferromagnetic powder is a ferromagnetic powder selected from the group consisting of a hexagonal strontium ferrite powder and an ?-iron oxide powder. The standard deviation of a height of the magnetic projection portion on a surface of the magnetic layer is in a range of 0.5 to 2.5 nm.Type: GrantFiled: February 25, 2021Date of Patent: November 8, 2022Assignee: FUJIFILM CorporationInventors: Yoshihiro Sawayashiki, Gen Omura
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Patent number: 11355147Abstract: The magnetic tape includes: a non-magnetic support; a magnetic layer that includes ferromagnetic powder on one surface side of the non-magnetic support; and a back coating layer that includes non-magnetic powder on the other surface side of the non-magnetic support, in which the ferromagnetic powder is ferromagnetic powder selected from the group consisting of hexagonal strontium ferrite powder and ?-iron oxide powder, and the number of protrusions having a height of 50 nm or more and less than 75 nm on a surface of the back coating layer is 700 pieces/6400 ?m2 or less.Type: GrantFiled: March 20, 2020Date of Patent: June 7, 2022Assignee: FUJIFILM CorporationInventors: Yoshihiro Sawayashiki, Norihito Kasada
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Publication number: 20210272594Abstract: The magnetic recording medium includes a non-magnetic support, and a magnetic layer including a ferromagnetic powder. The ferromagnetic powder is a ferromagnetic powder selected from the group consisting of a hexagonal strontium ferrite powder and an ?-iron oxide powder. The standard deviation of a height of the magnetic projection portion on a surface of the magnetic layer is in a range of 0.5 to 2.5 nm.Type: ApplicationFiled: February 25, 2021Publication date: September 2, 2021Applicant: FUJIFILM CorporationInventors: Yoshihiro Sawayashiki, Gen Omura
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Patent number: 10910008Abstract: The magnetic recording medium includes a non-magnetic support; a non-magnetic layer including a non-magnetic powder and a binding agent on the non-magnetic support; and a magnetic layer including a ferromagnetic powder, a binding agent, and a non-magnetic powder on the non-magnetic layer, in which a skewness Rsk obtained using an atomic force microscope in a measurement region of a surface of the magnetic layer having a size of 5 ?m×5 ?m is greater than 0, a maximum peak height Rmax is equal to or smaller than 30.0 nm, and the number of projections having a height equal to or greater than 10 nm is equal to or greater than 10, and a magnetic recording and reproducing device including: this magnetic recording medium; and a magnetic head.Type: GrantFiled: August 29, 2018Date of Patent: February 2, 2021Assignee: FUJIFILM CorporationInventors: Masahiko Mori, Yoshihiro Sawayashiki
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Publication number: 20200302962Abstract: The magnetic tape includes: a non-magnetic support; a magnetic layer that includes ferromagnetic powder on one surface side of the non-magnetic support; and a back coating layer that includes non-magnetic powder on the other surface side of the non-magnetic support, in which the ferromagnetic powder is ferromagnetic powder selected from the group consisting of hexagonal strontium ferrite powder and ?-iron oxide powder, and the number of protrusions having a height of 50 nm or more and less than 75 nm on a surface of the back coating layer is 700 pieces/6400 ?m2 or less.Type: ApplicationFiled: March 20, 2020Publication date: September 24, 2020Applicant: FUJIFILM CorporationInventors: Yoshihiro SAWAYASHIKI, Norihito KASADA
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Publication number: 20190074032Abstract: The magnetic recording medium includes a non-magnetic support; a non-magnetic layer including a non-magnetic powder and a binding agent on the non-magnetic support; and a magnetic layer including a ferromagnetic powder, a binding agent, and a non-magnetic powder on the non-magnetic layer, in which a skewness Rsk obtained using an atomic force microscope in a measurement region of a surface of the magnetic layer having a size of 5 ?m×5 ?m is greater than 0, a maximum peak height Rmax is equal to or smaller than 30.0 nm, and the number of projections having a height equal to or greater than 10 nm is equal to or greater than 10, and a magnetic recording and reproducing device including: this magnetic recording medium; and a magnetic head.Type: ApplicationFiled: August 29, 2018Publication date: March 7, 2019Applicant: FUJIFILM CorporationInventors: Masahiko MORI, Yoshihiro SAWAYASHIKI
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Patent number: 8470262Abstract: It is a microfluidic device including a flowchannel in which liquid flows. The flowchannel includes a main channel and a pair of branch channels provided across the main channel from each other to be each connected to the main channel. The main channel includes a first zone, a second zone, and a coupling zone that connects the first zone and the second zone. The second zone is smaller than the first zone in a distance between a bottom surface and a ceiling surface. The coupling zone is configured such that the distance between the bottom surface and the ceiling surface thereof gradually decreases towards the second zone from the first zone. A connection zone provided in the main channel and connected to each of the pair of branch channels overlaps with the coupling zone.Type: GrantFiled: February 9, 2011Date of Patent: June 25, 2013Assignee: FUJIFILM CorporationInventors: Hideyuki Karaki, Yoshihiro Sawayashiki
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Publication number: 20110194978Abstract: It is a microfluidic device including a flowchannel in which liquid flows. The flowchannel includes a main channel and a pair of branch channels provided across the main channel from each other to be each connected to the main channel. The main channel includes a first zone, a second zone, and a coupling zone that connects the first zone and the second zone. The second zone is smaller than the first zone in a distance between a bottom surface and a ceiling surface. The coupling zone is configured such that the distance between the bottom surface and the ceiling surface thereof gradually decreases towards the second zone from the first zone. A connection zone provided in the main channel and connected to each of the pair of branch channels overlaps with the coupling zone.Type: ApplicationFiled: February 9, 2011Publication date: August 11, 2011Inventors: Hideyuki KARAKI, Yoshihiro Sawayashiki
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Patent number: 7951610Abstract: A reaction method of performing an adsorption reaction in which a subject substance of analysis is specifically adsorbed in a first channel, the method includes: flowing a specimen liquid to a second channel connected to the first channel so that the specimen liquid is fed to the first channel, the specimen liquid containing the subject substance and a labeled substance that can be bonded to the subject substance; stopping feeding of the specimen liquid by detecting an event that a rear end of the specimen liquid flows into the first channel; joining a washing liquid to the rear end of the specimen liquid which stops in the first channel by flowing the washing liquid to a third channel that is converged to a connection portion of the second channel; and feeding the washing liquid to the first channel after the washing liquid is joined to the rear end.Type: GrantFiled: September 28, 2009Date of Patent: May 31, 2011Assignee: Fujifilm CorporationInventors: Yoshihiro Sawayashiki, Hideyuki Karaki
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Publication number: 20100081210Abstract: A reaction method of performing an adsorption reaction in which a subject substance of analysis is specifically adsorbed in a first channel, the method includes: flowing a specimen liquid to a second channel connected to the first channel so that the specimen liquid is fed to the first channel, the specimen liquid containing the subject substance and a labeled substance that can be bonded to the subject substance; stopping feeding of the specimen liquid by detecting an event that a rear end of the specimen liquid flows into the first channel; joining a washing liquid to the rear end of the specimen liquid which stops in the first channel by flowing the washing liquid to a third channel that is converged to a connection portion of the second channel; and feeding the washing liquid to the first channel after the washing liquid is joined to the rear end.Type: ApplicationFiled: September 28, 2009Publication date: April 1, 2010Inventors: Yoshihiro SAWAYASHIKI, Hideyuki KARAKI
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Publication number: 20090129198Abstract: An intra-microchannel mixing method for mixing at least two substances in a microchannel is provided, the method including: at least one minute channel; and a first area and a second area which are contiguous with each other, the method comprising: accommodating the at least two substances in the at least one minute channel; and regulating the first area and the second area to different temperatures.Type: ApplicationFiled: November 13, 2008Publication date: May 21, 2009Inventors: Hideyuki KARAKI, Kota Kato, Yoshihiro Sawayashiki, Hiroki Terada, Akira Wakabayashi
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Publication number: 20080153152Abstract: A microfluidic chip, includes: a first port for inputting: a sample liquid; and a first liquid; a second port for inputting a second liquid; a third port for supplying air pressure; a first channel (A) for mixing the sample liquid and the first liquid to generate a first mixed liquid; a second channel (B) for beating the first mixed liquid; a third channel (C) for allowing the second liquid to converge into the first mixed liquid to generate a second mixed liquid; a fourth channel (D) installing a first solid; a fifth channel (E) for promoting mixing of the first solid; a plurality of sixth channels (F) each having a second solid; and a seventh channel (G), which connects the fifth channel (E) and the plurality of sixth channels (F), for dispensing a fixed quantity of the second mixed liquid to each of the plurality of sixth channels (F).Type: ApplicationFiled: November 20, 2007Publication date: June 26, 2008Inventors: Akira Wakabayashi, Hideyuki Karaki, Yoshihiro Sawayashiki, Kota Kato, Yoshihide Iwaki
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Publication number: 20080130402Abstract: A microchannel chip, includes: a first channel where a first liquid is transported from one end side to an opposite end side; a port section to which a second liquid is supplied from outside for accumulating the second liquid; and a second channel connecting the first channel and the port section through a first opening provided in a side of the first channel and a second opening provided in the port section, wherein the second channel checks flowing out of the second liquid accumulated in the port section to the first channel by a Laplace pressure valve until the first liquid arrives at the first opening, and the second channel converges the second liquid into the first liquid after the first liquid reaches the first opening, and a converging device using the same.Type: ApplicationFiled: November 15, 2007Publication date: June 5, 2008Inventors: Hideyuki KARAKI, Yoshihiro Sawayashiki, Akira Wakabayashi, Yoshihide Iwaki