Patents by Inventor Hideki Okumura
Hideki Okumura 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: 20240116977Abstract: The present invention provides an efficient process for preparing a nucleic acid oligomer, in particular, a process for deprotecting efficiently a protecting group of hydroxy group of a ribose in a nucleic acid oligomer. Specifically, the present invention also provides a process for preparing a nucleic acid oligomer represented by formula (4), which comprises contacting a nucleic acid oligomer represented by formula (3) with a fluoride ion under an atmosphere of an inert gas or inert gases containing 15% or less of oxygen concentration (wherein the definitions of each groups described in formula (3) and formula (4) are the same as defined in the Description).Type: ApplicationFiled: August 25, 2020Publication date: April 11, 2024Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Takuya MIYAGAWA, Hideki OKUMURA
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Patent number: 11938739Abstract: An ink refill container includes a container main body including an ink storage chamber, an ink outlet-forming portion provided on an end portion of the container main body forming an ink outlet that allows the ink to flow out from the ink storage chamber, and a valve provided in the ink outlet-forming portion configured to openably seal the ink outlet, in which the ink outlet-forming portion includes a positioning portion on an outer side of the ink outlet-forming portion. in which the positioning portion is closer to the container main body than the valve is to the container main body in a central axis direction of the ink outlet, and in which the positioning portion partially abuts against an ink tank when the valve is opened for refilling the ink to the ink tank, to thereby position the valve relative to the ink tank.Type: GrantFiled: March 15, 2023Date of Patent: March 26, 2024Assignee: SEIKO EPSON CORPORATIONInventors: Tadahiro Mizutani, Ryoichi Tanaka, Manabu Akahane, Makoto Kobayashi, Naomi Kimura, Hideki Okumura, Shoma Kudo, Tetsuya Takamoto, Hiroaki Sakai
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Publication number: 20240051986Abstract: The present invention provides an efficient process for preparing a nucleic acid oligomer, specifically a method for deprotecting a protecting group of hydroxy group in the nucleic acid oligomer effectively. The present invention provides also a process for preparing a nucleic acid oligomer represented by formula (4) which comprises contacting a nucleic acid oligomer represented by formula (3) with a fluoride ion under an atmosphere of an inert gas or inert gases containing 15% or less of oxygen concentration (wherein each definition of the groups described in the formula (3) and the formula (4) are the same as those described in the Description).Type: ApplicationFiled: August 19, 2021Publication date: February 15, 2024Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Takuya MIYAGAWA, Hideki OKUMURA
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Publication number: 20230242570Abstract: An object of the present invention is to provide an efficient method for producing a nucleic acid oligomer. An object of the present invention is to provide a method for producing a nucleic acid oligomer represented by formula (2) (in the formula, the symbols have the meanings described in the specification), including a step of reacting a nucleic acid oligomer represented by formula (1) (in the formula, the symbols have the meanings described in the specification) with a trichloroacetic acid solution in which a molar ratio of formaldehyde to trichloroacetic acid (formaldehyde mol/trichloroacetic acid mol) is 11×10?5 or less.Type: ApplicationFiled: July 8, 2021Publication date: August 3, 2023Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Yuki TANAKA, Hideki OKUMURA, Toshifumi KANO
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Publication number: 20230219349Abstract: An ink refill container includes a container main body including an ink storage chamber, an ink outlet-forming portion provided on an end portion of the container main body forming an ink outlet that allows the ink to flow out from the ink storage chamber, and a valve provided in the ink outlet-forming portion configured to openably seal the ink outlet, in which the ink outlet-forming portion includes a positioning portion on an outer side of the ink outlet-forming portion. in which the positioning portion is closer to the container main body than the valve is to the container main body in a central axis direction of the ink outlet, and in which the positioning portion partially abuts against an ink tank when the valve is opened for refilling the ink to the ink tank, to thereby position the valve relative to the ink tank.Type: ApplicationFiled: March 15, 2023Publication date: July 13, 2023Applicant: SEIKO EPSON CORPORATIONInventors: Tadahiro MIZUTANI, Ryoichi TANAKA, Manabu AKAHANE, Makoto KOBAYASHI, Naomi KIMURA, Hideki OKUMURA, Shoma KUDO, Tetsuya TAKAMOTO, Hiroaki SAKAI
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Patent number: 11639060Abstract: An ink refill container includes a container main body including an ink storage chamber, an ink outlet-forming portion provided on an end portion of the container main body forming an ink outlet that allows the ink to flow out from the ink storage chamber, and a valve provided in the ink outlet-forming portion configured to openably seal the ink outlet, in which the ink outlet-forming portion includes a positioning portion on an outer side of the ink outlet-forming portion. in which the positioning portion is closer to the container main body than the valve is to the container main body in a central axis direction of the ink outlet, and in which the positioning portion partially abuts against an ink tank when the valve is opened for refilling the ink to the ink tank, to thereby position the valve relative to the ink tank.Type: GrantFiled: October 19, 2021Date of Patent: May 2, 2023Assignee: SEIKO EPSON CORPORATIONInventors: Tadahiro Mizutani, Ryoichi Tanaka, Manabu Akahane, Makoto Kobayashi, Naomi Kimura, Hideki Okumura, Shoma Kudo, Tetsuya Takamoto, Hiroaki Sakai
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Patent number: 11325386Abstract: A liquid container device includes: a liquid container having an inlet; a casing in which the liquid container is housed; and a cap lever having a cap configured to seal the inlet. The liquid container has an upper surface, and a visualization surface. The casing includes a cover configured to pivot and that protects the upper surface, a cap lever-engaging portion, a visualization portion having an opening, and a wall portion disposed on the +Z direction side with respect to the visualization portion. The cap lever includes an engageable portion configured to be engaged with the cap lever-engaging portion, and a body extending in the +Y direction from the engageable portion. A surface disposed so as to face the cover of the body is planar, and an end of the body in the +Y direction is separated from an end of the wall portion in the +Z direction.Type: GrantFiled: December 17, 2020Date of Patent: May 10, 2022Assignee: SEIKO EPSON CORPORATIONInventors: Hideki Okumura, Toshiyuki Ochiai
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Publication number: 20220032638Abstract: An ink refill container includes a container main body including an ink storage chamber, an ink outlet-forming portion provided on an end portion of the container main body forming an ink outlet that allows the ink to flow out from the ink storage chamber, and a valve provided in the ink outlet-forming portion configured to openably seal the ink outlet, in which the ink outlet-forming portion includes a positioning portion on an outer side of the ink outlet-forming portion. in which the positioning portion is closer to the container main body than the valve is to the container main body in a central axis direction of the ink outlet, and in which the positioning portion partially abuts against an ink tank when the valve is opened for refilling the ink to the ink tank, to thereby position the valve relative to the ink tank.Type: ApplicationFiled: October 19, 2021Publication date: February 3, 2022Applicant: SEIKO EPSON CORPORATIONInventors: Tadahiro MIZUTANI, Ryoichi TANAKA, Manabu AKAHANE, Makoto KOBAYASHI, Naomi KIMURA, Hideki OKUMURA, Shoma KUDO, Tetsuya TAKAMOTO, Hiroaki SAKAI
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Patent number: 11179944Abstract: An ink refill container includes a container main body including an ink storage chamber, an ink outlet-forming portion provided on an end portion of the container main body forming an ink outlet that allows the ink to flow out from the ink storage chamber, and a valve provided in the ink outlet-forming portion configured to openably seal the ink outlet, in which the ink outlet-forming portion includes a positioning portion on an outer side of the ink outlet-forming portion. in which the positioning portion is closer to the container main body than the valve is to the container main body in a central axis direction of the ink outlet, and in which the positioning portion partially abuts against an ink tank when the valve is opened for refilling the ink to the ink tank, to thereby position the valve relative to the ink tank.Type: GrantFiled: October 14, 2020Date of Patent: November 23, 2021Assignee: SEIKO EPSON CORPORATIONInventors: Tadahiro Mizutani, Ryoichi Tanaka, Manabu Akahane, Makoto Kobayashi, Naomi Kimura, Hideki Okumura, Shoma Kudo, Tetsuya Takamoto, Hiroaki Sakai
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Patent number: 11090945Abstract: A liquid discharge apparatus includes a liquid storing portion, a liquid discharge unit that discharges the liquid to a medium and performs printing, a supply flow path that communicates the liquid storing portion and the liquid discharge unit, an opening/closing mechanism including an opening/closing unit that brings the supply flow path into an open state or a closed state and an operation unit that operates the opening/closing unit, and a moving unit configured to move between a first position that is a normal position when performing the printing and a second position different from the first position. A range where the operation unit brings supply flow path into a transient state between the open state and the closed state includes a position of the operation unit at which the operation unit interferes with the moving unit located in the first position.Type: GrantFiled: February 24, 2020Date of Patent: August 17, 2021Assignee: Seiko Epson CorporationInventors: Toshiyuki Ochiai, Hideki Okumura
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Patent number: 11072180Abstract: An ink tank that communicates with an ink ejecting head, includes: an ink chamber configured to house ink; an ink inlet portion that communicates with the ink chamber and that receives ink supplied from an ink supply container; and an ink viewing portion that is a portion of a wall that defines the ink chamber and that enables the ink in the ink chamber to be viewed from an outside, the ink chamber having an ink guide wall for guiding the ink from the ink inlet portion toward the ink viewing portion.Type: GrantFiled: September 17, 2019Date of Patent: July 27, 2021Assignee: SEIKO EPSON CORPORATIONInventors: Tadahiro Mizutani, Taku Ishizawa, Noriyuki Fukasawa, Hideki Okumura, Naomi Kimura
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Publication number: 20210187955Abstract: A liquid container device includes: a liquid container having an inlet; a casing in which the liquid container is housed; and a cap lever having a cap configured to seal the inlet. The liquid container has an upper surface, and a visualization surface. The casing includes a cover configured to pivot and that protects the upper surface, a cap lever-engaging portion, a visualization portion having an opening, and a wall portion disposed on the +Z direction side with respect to the visualization portion. The cap lever includes an engageable portion configured to be engaged with the cap lever-engaging portion, and a body extending in the +Y direction from the engageable portion. A surface disposed so as to face the cover of the body is planar, and an end of the body in the +Y direction is separated from an end of the wall portion in the +Z direction.Type: ApplicationFiled: December 17, 2020Publication date: June 24, 2021Applicant: SEIKO EPSON CORPORATIONInventors: Hideki OKUMURA, Toshiyuki OCHIAI
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Publication number: 20210023850Abstract: An ink refill container includes a container main body including an ink storage chamber, an ink outlet-forming portion provided on an end portion of the container main body forming an ink outlet that allows the ink to flow out from the ink storage chamber, and a valve provided in the ink outlet-forming portion configured to openably seal the ink outlet, in which the ink outlet-forming portion includes a positioning portion on an outer side of the ink outlet-forming portion. in which the positioning portion is closer to the container main body than the valve is to the container main body in a central axis direction of the ink outlet, and in which the positioning portion partially abuts against an ink tank when the valve is opened for refilling the ink to the ink tank, to thereby position the valve relative to the ink tank.Type: ApplicationFiled: October 14, 2020Publication date: January 28, 2021Applicant: SEIKO EPSON CORPORATIONInventors: Tadahiro MIZUTANI, Ryoichi TANAKA, Manabu AKAHANE, Makoto KOBAYASHI, Naomi KIMURA, Hideki OKUMURA, Shoma KUDO, Tetsuya TAKAMOTO, Hiroaki SAKAI
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Patent number: 10889123Abstract: An ink refill container 63 includes a container main body 64 including an ink storage chamber 76, an ink outlet-forming portion 66 provided on an end portion of the container main body forming an ink outlet 65 that allows the ink to flow out from the ink storage chamber, and a valve 74 provided in the ink outlet-forming portion configured to openably seal the ink outlet, in which the ink outlet-forming portion includes a positioning portion 73 on an outer side of the ink outlet-forming portion. in which the positioning portion 73 is closer to the container main body than the valve 74 is to the container main body in a central axis direction of the ink outlet, and in which the positioning portion partially abuts against an ink tank 41-45 when the valve is opened for refilling the ink to the ink tank, to thereby position the valve relative to the ink tank.Type: GrantFiled: April 23, 2020Date of Patent: January 12, 2021Assignee: SEIKO EPSON CORPORATIONInventors: Tadahiro Mizutani, Ryoichi Tanaka, Manabu Akahane, Makoto Kobayashi, Naomi Kimura, Hideki Okumura, Shoma Kudo, Tetsuya Takamoto, Hiroaki Sakai
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Patent number: 10886084Abstract: A pressure switch includes an airtight metallic pressure vessel. A contact mechanism is normally in a closed state and assumes an open state when a pressing force acts thereon. An airtight terminal, provided through an end surface section of the pressure vessel, is connected to the contact mechanism. A metallic first diaphragm is secured to a surface section at one end of the pressure vessel, is moved by a first moving pressure, and is reset by a reset pressure that is lower than the first moving pressure. A first plunger causes the contact mechanism to switch the open state. A metallic second diaphragm is secured to pressure vessel, is moved by a second moving pressure that is higher than the first moving pressure, and is not reset under at least an atmospheric pressure. A second plunger causes the contact mechanism to switch to the open state.Type: GrantFiled: August 7, 2019Date of Patent: January 5, 2021Assignee: UBUKATA INDUSTRIES CO., LTD.Inventors: Hiroshi Murata, Hideki Okumura, Takehiko Okumura, Kanichiro Sugiura, Shinichi Takahashi
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Patent number: 10843475Abstract: An ink refill container 63 includes a container main body 64 including an ink storage chamber 76, an ink outlet-forming portion 66 provided on an end portion of the container main body forming an ink outlet 65 that allows the ink to flow out from the ink storage chamber, and a valve 74 provided in the ink outlet-forming portion configured to openably seal the ink outlet, in which the ink outlet-forming portion includes a positioning portion 73 on an outer side of the ink outlet-forming portion. in which the positioning portion 73 is closer to the container main body than the valve 74 is to the container main body in a central axis direction of the ink outlet, and in which the positioning portion partially abuts against an ink tank 41-45 when the valve is opened for refilling the ink to the ink tank, to thereby position the valve relative to the ink tank.Type: GrantFiled: April 23, 2020Date of Patent: November 24, 2020Assignee: SEIKO EPSON CORPORATIONInventors: Tadahiro Mizutani, Ryoichi Tanaka, Manabu Akahane, Makoto Kobayashi, Naomi Kimura, Hideki Okumura, Shoma Kudo, Tetsuya Takamoto, Hiroaki Sakai
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Publication number: 20200298579Abstract: An ink refill container 63 includes a container main body 64 including an ink storage chamber 76, an ink outlet-forming portion 66 provided on an end portion of the container main body forming an ink outlet 65 that allows the ink to flow out from the ink storage chamber, and a valve 74 provided in the ink outlet-forming portion configured to openably seal the ink outlet, in which the ink outlet-forming portion includes a positioning portion 73 on an outer side of the ink outlet-forming portion. in which the positioning portion 73 is closer to the container main body than the valve 74 is to the container main body in a central axis direction of the ink outlet, and in which the positioning portion partially abuts against an ink tank 41-45 when the valve is opened for refilling the ink to the ink tank, to thereby position the valve relative to the ink tank.Type: ApplicationFiled: April 23, 2020Publication date: September 24, 2020Applicant: SEIKO EPSON CORPORATIONInventors: Tadahiro MIZUTANI, Ryoichi TANAKA, Manabu AKAHANE, Makoto KOBAYASHI, Naomi KIMURA, Hideki OKUMURA, Shoma KUDO, Tetsuya TAKAMOTO, Hiroaki SAKAI
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Publication number: 20200269596Abstract: A liquid discharge apparatus includes a liquid storing portion, a liquid discharge unit that discharges the liquid to a medium and performs printing, a supply flow path that communicates the liquid storing portion and the liquid discharge unit, an opening/closing mechanism including an opening/closing unit that brings the supply flow path into an open state or a closed state and an operation unit that operates the opening/closing unit, and a moving unit configured to move between a first position that is a normal position when performing the printing and a second position different from the first position. A range where the operation unit brings supply flow path into a transient state between the open state and the closed state includes a position of the operation unit at which the operation unit interferes with the moving unit located in the first position.Type: ApplicationFiled: February 24, 2020Publication date: August 27, 2020Inventors: Toshiyuki Ochiai, Hideki Okumura
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Patent number: 10752009Abstract: Provided is a liquid tank that can reduce the remaining amount of liquid even if a use state of the liquid tank is in an inclined state. The liquid tank includes an external wall, a liquid discharge port, and a first protruding portion and a second protruding portion that are provided inside the liquid tank and respectively protrude from a third side wall. The height of the second protruding portion from a bottom wall in a use state is higher than the height of the first protruding portion from the bottom wall. The first protruding portion has, at an upper portion thereof, a first inclined portion that is inclined to the upper part in the first direction, and the second protruding portion has, at an upper portion thereof, a second inclined portion that is inclined to the upper part in the second direction.Type: GrantFiled: January 30, 2019Date of Patent: August 25, 2020Assignee: SEIKO EPSON CORPORATIONInventors: Shoma Kudo, Hideki Okumura
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Patent number: 10717287Abstract: An ink refill container 63 includes a container main body 64 including an ink storage chamber 76, an ink outlet-forming portion 66 provided on an end portion of the container main body forming an ink outlet 65 that allows the ink to flow out from the ink storage chamber, and a valve 74 provided in the ink outlet-forming portion configured to openably seal the ink outlet, in which the ink outlet-forming portion includes a positioning portion 73 on an outer side of the ink outlet-forming portion. in which the positioning portion 73 is closer to the container main body than the valve 74 is to the container main body in a central axis direction of the ink outlet, and in which the positioning portion partially abuts against an ink tank 41-45 when the valve is opened for refilling the ink to the ink tank, to thereby position the valve relative to the ink tank.Type: GrantFiled: June 7, 2017Date of Patent: July 21, 2020Assignee: SEIKO EPSON CORPORATIONInventors: Tadahiro Mizutani, Ryoichi Tanaka, Manabu Akahane, Makoto Kobayashi, Naomi Kimura, Hideki Okumura, Shoma Kudo, Tetsuya Takamoto, Hiroaki Sakai