Patents by Inventor Michiaki Kumagai
Michiaki Kumagai 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: 11485553Abstract: A container with cap provided with a knock cam mechanism having an uncomplicated structure employing a small number of parts, enabling the cap to be securely attached to and detached from the container body. The cap has a housing in which a plurality of grooves alternating with ribs are formed in an inner circumferential surface thereof at equiangular intervals around a cylindrical axis, and inside the housing are disposed a push-button plunger having protrusions formed on the outer peripheral surface that slide along inside the grooves, a ratchet having sloped protrusions on the outer circumference, an inner lid having tabs on the peripheral wall, an elastic member for urging the ratchet upward, and a container body in which a locking portion is formed on the outer circumference of a neck of the container body.Type: GrantFiled: August 13, 2021Date of Patent: November 1, 2022Assignee: YOSHIDA INDUSTRIES CO., LTD.Inventors: Yuzo Yoshida, Michiaki Kumagai
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Publication number: 20220055806Abstract: A container with cap provided with a knock cam mechanism having an uncomplicated structure employing a small number of parts, enabling the cap to be securely attached to and detached from the container body. The cap has a housing in which a plurality of grooves alternating with ribs are formed in an inner circumferential surface thereof at equiangular intervals around a cylindrical axis, and inside the housing are disposed a push-button plunger having protrusions formed on the outer peripheral surface that slide along inside the grooves, a ratchet having sloped protrusions on the outer circumference, an inner lid having tabs on the peripheral wall, an elastic member for urging the ratchet upward, and a container body in which a locking portion is formed on the outer circumference of a neck of the container body.Type: ApplicationFiled: August 13, 2021Publication date: February 24, 2022Applicant: YOSHIDA INDUSTRIES CO., LTD.Inventors: Yuzo Yoshida, Michiaki Kumagai
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Patent number: 9398801Abstract: A cosmetic container which is capable of stabilizing an action of a hinge portion is provided with a single pivot shaft member, and improving opening and closing functions of a lid body. Included are: a container main body configured to contain a cosmetic; a lid body turnably provided to the container main body and capable of opening and closing the container main body; and a first pivot support member and a second pivot support mechanism disposed on a pivot axis about which the lid body turns, and causing the container main body to turnably support the lid body. The first pivot support member includes: a compression coil spring located between the container main body and the lid body; and a lock member and a pivot member. The second pivot support mechanism includes fan-shaped recessed and projecting portions and a shaft portion of the second pivot support member.Type: GrantFiled: December 10, 2012Date of Patent: July 26, 2016Assignee: Yoshida Industries Co., Ltd.Inventors: Yuzo Yoshida, Michiaki Kumagai
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Patent number: 8961949Abstract: The present invention provides a polymer-metal complex composite, which comprises a block copolymer capable of serving as a constituent member of a polymeric micelle and a metal complex having MRI contrast ability, accumulates in a tumor-specific manner, achieves high image contrast even in a small amount, and has reduced side effects and a long retention time in blood. The polymer-metal complex composite of the present invention comprises a block copolymer (A) represented by general formula (a) and a metal complex (B) having MRI contrast ability, wherein the composite comprises a structure in which a carboxyl anion of poly(carbo) in the copolymer (A) is attached to the metal complex (B) via a metal atom (M).Type: GrantFiled: June 26, 2009Date of Patent: February 24, 2015Assignee: Japan Science and Technology AgencyInventors: Kazunori Kataoka, Sachiko Kaida, Horacio Cabral, Michiaki Kumagai, Masaki Sekino
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Publication number: 20150021347Abstract: A cosmetic container which is capable of stabilizing an action of a hinge portion is provided with a single pivot shaft member having biasing means, and improving opening and closing functions of a lid body. Included are: a container main body configured to contain a cosmetic; a lid body turnably provided to the container main body and capable of opening and closing the container main body; and a first pivot support member and a second pivot support mechanism disposed on a pivot axis about which the lid body turns, and causing the container main body to turnably support the lid body. The first pivot support member includes: a compression coil spring located between the container main body and the lid body and configured to generate resilience when compressed in a direction along the pivot axis; and a lock member and a pivot member configured to compress the compression coil spring in the direction along the pivot axis and to release the compression by turning of the lid body.Type: ApplicationFiled: December 10, 2012Publication date: January 22, 2015Inventors: Yuzo Yoshida, Michiaki Kumagai
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Patent number: 8871180Abstract: This invention provides organic-inorganic hybrid particles containing as the essential components a block copolymer comprising an uncharged hydrophilic polymer chain segment and a polymer chain segment containing a repeated structural unit having a carboxylate ion group at its side chain; calcium ion (Ca2+), phosphate ion (PO43?) or carbonate ion (CO32?), or a mixture of these anions; and a contrast agent. The particles provide, in particular, carriers for stably delivering an MRI contrast agent to a target site.Type: GrantFiled: September 4, 2007Date of Patent: October 28, 2014Assignee: Japan Science and Technology AgencyInventors: Kazunori Kataoka, Michiaki Kumagai, Keisuke Aikawa
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Patent number: 8540077Abstract: [Problem to be solved] To provide a compact case built-in with a hinge unit that can be easily assembled while reducing manufacturing costs of parts.Type: GrantFiled: February 9, 2011Date of Patent: September 24, 2013Assignee: Yoshida Industries Co., Ltd.Inventors: Yuzo Yoshida, Michiaki Kumagai, Yasuko Nakajima
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Publication number: 20120305417Abstract: [Problem to be solved] To provide a compact case built-in with a hinge unit that can be easily assembled while reducing manufacturing costs of parts.Type: ApplicationFiled: February 9, 2011Publication date: December 6, 2012Applicant: YOSHIDA INDUSTRIES CO LTDInventors: Yuzo Yoshida, Michiaki Kumagai, Yasuko Nakajima
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Publication number: 20110123458Abstract: The present invention provides a polymer-metal complex composite, which comprises a block copolymer capable of serving as a constituent member of a polymeric micelle and a metal complex having MRI contrast ability, accumulates in a tumor-specific manner, achieves high image contrast even in a small amount, and has reduced side effects and a long retention time in blood. The polymer-metal complex composite of the present invention comprises a block copolymer (A) represented by general formula (a) and a metal complex (B) having MRI contrast ability, wherein the composite comprises a structure in which a carboxyl anion of poly(carbo) in the copolymer (A) is attached to the metal complex (B) via a metal atom (M).Type: ApplicationFiled: June 26, 2009Publication date: May 26, 2011Applicant: Japan Science and Technology AgencyInventors: KazunoriI Kataoka, Sachiko Kaida, Horacio Cabral, Michiaki Kumagai, Masaki Sekino
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Publication number: 20100278737Abstract: This invention provides organic-inorganic hybrid particles containing as the essential components a block copolymer comprising an uncharged hydrophilic polymer chain segment and a polymer chain segment containing a repeated structural unit having a carboxylate ion group at its side chain; calcium ion (Ca2+), phosphate ion (PO43?) or carbonate ion (CO32?), or a mixture of these anions; and a contrast agent. The particles provide, in particular, carriers for stably delivering an MRI contrast agent to a target site.Type: ApplicationFiled: September 4, 2007Publication date: November 4, 2010Inventors: Kazunori Kataoka, Michiaki Kumagai, Keisuke Aikawa
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Patent number: 6386209Abstract: A cosmetic case containing a replaceable inner case which can be easily removed or inserted, and which is specifically structure to maintain the cosmetic material contained therein in a fresh and useable condition. The invention is comprised of an outer case with a floor area and inner peripheral wall defining a space for an inner container, an outer cover attached by a hinge to the outer case, a main latch employed to hold the outer cover closed, a replaceable inner container providing a cosmetic holding space, an inner container cover capable of opening or closing over the cosmetic holding space, and a sub-latch employed to hold the inner cover closed against the inner container. The inner case is equipped with a hinge part to allow opening and closing of the inner cover, the hinge part fitting into a cutout section on the peripheral wall of the outer case so as to expose the hinge and thus allow wide angle opening of the inner case cover.Type: GrantFiled: October 16, 2000Date of Patent: May 14, 2002Assignee: Yoshida Industry Co., Ltd.Inventors: Yukitomo Yuhara, Kiyokazu Miyokawa, Michiaki Kumagai, Takashi Sugiyama
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Patent number: 6311701Abstract: A cosmetic case containing a replaceable inner case which can be easily removed or inserted, and which is specifically structured to maintain the cosmetic material contained therein in a fresh and useable condition. The invention is comprised of an outer case with a floor area and inner peripheral wall defining a space for an inner container, an outer cover attached by a hinge to the outer case, a main latch employed to hold the outer cover closed, a replaceable inner container providing a cosmetic holding space, an inner container cover capable of opening or closing over the cosmetic holding space, and a sub-latch employed to hold the inner cover closed against the inner container. The inner case is equipped with a hinge part to allow opening and closing of the inner cover, the hinge part fitting into a cutout section on the peripheral wall of the outer case so as to expose the hinge and thus allow wide angle opening of the inner case cover.Type: GrantFiled: October 16, 2000Date of Patent: November 6, 2001Assignee: Yoshida Industry Co. Ltd.Inventors: Yukitomo Yuhara, Kiyokazu Miyokawa, Michiaki Kumagai, Takashi Sugiyama
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Patent number: 6192895Abstract: A cosmetic case containing a replaceable inner case which can be easily removed or inserted, and which is specifically structured to maintain the cosmetic material contained therein in a fresh and usable condition. The invention is comprised of an outer case with a floor area and inner peripheral wall defining a space for an inner container, an outer cover attached by a hinge to the outer case, a main latch employed to hold the outer cover closed, a replaceable inner container providing a cosmetic holding space, an inner container cover capable of opening or closing over the cosmetic holding space, and a sub-latch employed to hold the inner cover closed against the inner container. The inner case is equipped with a hinge part to allow opening and closing of the inner cover, said hinge part fitting into a cutout section on the peripheral wall of the outer case so as to expose the hinge and thus allow wide angle opening of the inner case cover.Type: GrantFiled: June 29, 1998Date of Patent: February 27, 2001Assignee: Yoshida Industry Co. Ltd.Inventors: Yukitomo Yuhara, Kiyokazu Miyokawa, Michiaki Kumagai, Takashi Sugiyama