Patents by Inventor Kei Asai

Kei Asai 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).

  • Publication number: 20150313994
    Abstract: An object of the present invention is to provide surface-modified ferromagnetic iron oxide particles suitable for electromagnetic-induction cancer ablation, which have excellent heat generation properties and also have excellent dispersion stability in a medium for injection. The surface-modified iron oxide particles for cancer ablation of the present invention as a means for achieving the object are characterized in that a block copolymer of polyethylene glycol and polystyrene having a phosphorous acid group in the side chain is bound to the surface of ferromagnetic iron oxide particles having a plate-like shape with a length of 20 to 200 nm and a length-to-thickness ratio of 1.5 to 30 and having magnetic properties such that the coercivity is 30 to 300 Oe, the saturation magnetization is 20 to 80 emu/g, and the squareness ratio of the magnetic hysteresis loop is 0.20 to 0.50.
    Type: Application
    Filed: September 10, 2013
    Publication date: November 5, 2015
    Applicant: UNIVERSITY OF TSUKUBA
    Inventors: Tatsuya ODA, Yukio NAGASAKI, Kei ASAI, Eiji KITA, Hideto YANAGIHARA, Nobuhiro OHKOHCHI, Mikio KISHIMOTO
  • Patent number: 9155847
    Abstract: A nebulizer includes a main body unit, an atomization unit, and a breath detection unit, which is a function unit for realizing an additional function of the nebulizer. The main body unit and the atomization unit are separable. The atomization unit includes a storage section for storing the medicinal solution, and an atomizing section for spraying the medicinal solution by atomizing the medicinal solution in the storage section. The main body unit includes a control circuit for performing control to operate the atomizing section. The breath detection unit is attachable between the main body unit and the atomization unit.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: October 13, 2015
    Assignee: OMRON HEALTHCARE CO., LTD.
    Inventors: Masao Maeda, Kei Asai, Kentaro Mori, Makoto Tabata, Masayuki Esaki, Toshiro Furusawa, Yusaku Sakoda, Yusuke Kato
  • Patent number: 8656935
    Abstract: In a thin plate member washing apparatus, when a rotary arm member supporting a mesh member holding portion is rotated using a rotary handle, tap water flows over the surface of a mesh member, and medicinal fluid residue deposited on the mesh member is removed.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: February 25, 2014
    Assignee: Omron Healthcare Co., Ltd.
    Inventors: Yusuke Kato, Takanobu Yamauchi, Kei Asai, Makoto Tabata, Yusaku Sakoda
  • Patent number: 8627837
    Abstract: In a thin plate member washing apparatus, when a rotary arm member supporting a mesh member holding portion is rotated using a rotary handle, tap water flows over the surface of a mesh member, and medicinal fluid residue deposited on the mesh member is removed.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: January 14, 2014
    Assignee: Omron Healthcare Co., Ltd.
    Inventors: Yusuke Kato, Takanobu Yamauchi, Kei Asai, Makoto Tabata, Yusaku Sakoda
  • Publication number: 20120279533
    Abstract: In a thin plate member washing apparatus, when a rotary arm member supporting a mesh member holding portion is rotated using a rotary handle, tap water flows over the surface of a mesh member, and medicinal fluid residue deposited on the mesh member is removed.
    Type: Application
    Filed: June 15, 2012
    Publication date: November 8, 2012
    Applicant: OMRON HEALTHCARE CO., LTD.
    Inventors: Yusuke KATO, Takanobu YAMAUCHI, Kei ASAI, Makoto TABATA, Yusaku SAKODA
  • Patent number: 8286629
    Abstract: A nebulizer includes a nebulizer body a relay pipe. The nebulizer body includes a connection portion that has an aerosol lead-out port to lead out aerosol, and the relay pipe includes a connection portion that has an aerosol introduction port to introduce the aerosol. The nebulizer body the relay pipe can take a first connection state in which the relay pipe detachably connected to the nebulizer body and a second connection state in which the relay pipe is connected to the nebulizer body so as to be not able to be detached from the nebulizer body. In the first connection state, the aerosol introduction port and the aerosol lead-out port are communicated with each other. In the second connection state, the aerosol lead-out port is blocked by a blocking portion provided in the relay pipe. Therefore, the nebulizer in which reuse of the nebulizer body or relay pipe is simply prohibited after the usage can be provided by the configuration.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: October 16, 2012
    Assignee: Omron Healthcare Co., Ltd.
    Inventors: Masayuki Esaki, Kentaro Mori, Makoto Tabata, Kei Asai, Yosuke Fujii
  • Publication number: 20120247518
    Abstract: In a thin plate member washing apparatus, tap water showering down from water flow holes of a water flow plate makes contact with outer rotary blades and inner rotary blades provided in a rotary supporting member, thereby rotating the rotary supporting member. Moreover, the tap water falling on a mesh member held by a mesh member holding portion flows over a front surface and a back surface of the mesh member based on a centrifugal force due to rotation of the mesh member and removes medicinal fluid residue deposited on the mesh member. The medicinal fluid residue removed from the mesh member is directly carried by the tap water and discharged to the outside of the thin plate member washing apparatus through a fluid outlet opening.
    Type: Application
    Filed: March 28, 2012
    Publication date: October 4, 2012
    Applicant: OMRON HEALTHCARE CO., LTD.
    Inventors: Masayuki ESAKI, Kei ASAI, Kentaro MORI, Makoto TABATA, Yusaku SAKODA, Toshiro FURUSAWA, Masao MAEDA, Yusuke KATO
  • Publication number: 20110290241
    Abstract: A nebulizer includes a main body unit, an atomization unit, and a breath detection unit, which is a function unit for realizing an additional function of the nebulizer. The main body unit and the atomization unit are separable. The atomization unit includes a storage section for storing the medicinal solution, and an atomizing section for spraying the medicinal solution by atomizing the medicinal solution in the storage section. The main body unit includes a control circuit for performing control to operate the atomizing section. The breath detection unit is attachable between the main body unit and the atomization unit.
    Type: Application
    Filed: August 11, 2011
    Publication date: December 1, 2011
    Applicant: OMRON HEALTHCARE CO., LTD.
    Inventors: Masao MAEDA, Kei ASAI, Kentaro MORI, Makoto TABATA, Masayuki ESAKI, Toshiro FURUSAWA, Yusaku SAKODA, Yusuke KATO
  • Publication number: 20100319687
    Abstract: A nebulizer includes a nebulizer body and a relay pipe. The nebulizer body includes a connection portion that has an aerosol lead-out port to lead out aerosol, and the relay pipe includes a connection portion that has an aerosol introduction port to introduce the aerosol. The nebulizer body and the relay pipe can take a first connection state in which the relay pipe is detachably connected to the nebulizer body and a second connection state in which the relay pipe is connected to the nebulizer body so as to be not able to be detached from the nebulizer body. In the first connection state, the aerosol introduction port and the aerosol lead-out port are communicated with each other. In the second connection state, the aerosol lead-out port is blocked by a blocking portion provided in the relay pipe. Therefore, the nebulizer in which reuse of the nebulizer body or relay pipe is simply prohibited after the usage can be provided by the configuration.
    Type: Application
    Filed: February 25, 2009
    Publication date: December 23, 2010
    Applicant: OMRON HEALTHCARE CO., LTD.
    Inventors: Masayuki Esaki, Kentaro Mori, Makoto Tabata, Kei Asai, Yosuke Fujii
  • Patent number: 7147132
    Abstract: An ampoule for containing a specified amount of liquid inside to be used for a liquid atomizer has a tubular main body having an open front part including an outlet at one end and an open back part at an opposite end. A piston is inserted into the main body from the open front part in an airtight manner and is slidable axially inside the main body. Another piston is inserted into the main body from the open back part in an airtight manner so as to be slidable axially inside the main body. The two pistons form a reservoir in between for storing a liquid. The forwardly located piston has a weakened part on the side that faces the reservoir. As a sharp member extending from the other piston penetrates this weakened, the reservoir and the outlet become connected and the liquid inside the reservoir is discharged.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: December 12, 2006
    Assignee: Omron Healthcare Co., Ltd.
    Inventors: Makoto Tabata, Kei Asai, Shinichi Ito
  • Patent number: 6913208
    Abstract: A liquid atomizer includes a main body and an ampoule holder detachably attached to the main body for holding ampoules in an annular formation. The main body has an atomizing part for atomizing the liquid discharged from outlets of the ampoules. The outlet of each of these ampoules can be disposed proximal to the atomizing part by moving the ampoules around the annular formation. Positioning devices are between the main body and the ampoule holder for positioning the ampoule holder properly with respect to the main body. The ampoule holder holds the ampoules such that each of the ampoules can move between an advanced position and a retracted position. The outlet of each ampoule moves into the atomizing part when the ampoule moves to the advanced position. The ampoule holder is able to undergo a rotary motion with respect to the main body when each of the ampoules is at the retracted position.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: July 5, 2005
    Assignee: OMRON Healthcare Co., Ltd.
    Inventors: Makoto Tabata, Kei Asai, Shinichi Ito
  • Patent number: 6901926
    Abstract: A bush (31) is fitted into a housing (10) and an ultrasonic pump (12) is supported liquid tightly by the bush (31). The ultrasonic pump (12) is constituted by a pump shaft (21) formed to include a pump bore (22) passing through it axially and having upper and lower ends which are open, and an ultrasonic vibrator (23) mounted on the pump shaft (21) in the vicinity of the midpoint thereof in terms of the axial direction. A liquid vessel.(16) is mounted in the housing (10) in a freely attachable and detachable manner, and the lower end portion of the pump shaft (21) is received inside the liquid vessel (16). A cap (15) is freely detachably attached to the upper end portion of the housing (10) so as to cover the upper end portion of the pump shaft (21). The top side of the cap (15) is provided with a spray port (51), and a step portion (57) is formed for supporting a mesh plate (14) at the periphery thereof at a position below the spray port (51).
    Type: Grant
    Filed: July 23, 2003
    Date of Patent: June 7, 2005
    Assignee: Omron Corporation
    Inventors: Hirohito Yamamoto, Kei Asai
  • Patent number: 6863224
    Abstract: A bottle unit (30) of a liquid atomizing apparatus is provided with: a bottle section (31) reserving a chemical liquid (L); a horn oscillating member (40) to whose a distal end the liquid (L) in the bottle section (31) is fed; and a mesh member (1) having a number of fine pores (2), and mounted to an end surface of the distal end (41) of the horn oscillating member (40) in contact therewith. The bottle section (31) is constituted of a large capacity section (B) and a small capacity section (b) in communication with the large capacity section (B) through an opening (32), and opposing to the distal end (41) of the horn oscillating member (40). The small capacity section (b) is formed such that the liquid (L?) therein is in contact with a point in the proximity of the contact section between the distal end (41) of the horn oscillating member (40) and the mesh member (1).
    Type: Grant
    Filed: October 1, 2001
    Date of Patent: March 8, 2005
    Assignee: Omron Corporation
    Inventors: Takao Terada, Kei Asai, Masato Arai, Shinichi Itoh, Shinya Tanaka, Masashi Osuga, Toshiji Takahashi
  • Publication number: 20040188458
    Abstract: An ampoule for containing a specified amount of liquid inside to be used for a liquid atomizer has a tubular main body having an open front part including an outlet at one end and an open back part at an opposite end. A piston is inserted into the main body from the open front part in an airtight manner and is slidable axially inside the main body. Another piston is inserted into the main body from the open back part in an airtight manner so as to be slidable axially inside the main body. The two pistons form a reservoir in between for storing a liquid. The forwardly located piston has a weakened part on the side that faces the reservoir. As a sharp member extending from the other piston penetrates this weakened, the reservoir and the outlet become connected and the liquid inside the reservoir is discharged.
    Type: Application
    Filed: December 22, 2003
    Publication date: September 30, 2004
    Applicant: OMRON Healthcare Co., Ltd.
    Inventors: Makoto Tabata, Kei Asai, Shinichi Ito
  • Publication number: 20040188546
    Abstract: A liquid atomizer includes a main body and an ampoule holder detachably attached to the main body for holding ampoules in an annular formation. The main body has an atomizing part for atomizing the liquid discharged from outlets of the ampoules. The outlet of each of these ampoules can be disposed proximal to the atomizing part by moving the ampoules around the annular formation. Positioning devices are between the main body and the ampoule holder for positioning the ampoule holder properly with respect to the main body. The ampoule holder holds the ampoules such that each of the ampoules can move between an advanced position and a retracted position. The outlet of each ampoule moves into the atomizing part when the ampoule moves to the advanced position. The ampoule holder is able to undergo a rotary motion with respect to the main body when each of the ampoules is at the retracted position.
    Type: Application
    Filed: December 22, 2003
    Publication date: September 30, 2004
    Applicant: OMRON Healthcare Co., Ltd.
    Inventors: Makoto Tabata, Kei Asai, Shinichi Ito
  • Publication number: 20040050953
    Abstract: A bottle unit (30) of a liquid atomizing apparatus is provided with: a bottle section (31) reserving a chemical liquid (L); a horn oscillating member (40) to whose a distal end the liquid (L) in the bottle section (31) is fed; and a mesh member (1) having a number of fine pores (2), and mounted to an end surface of the distal end (41) of the horn oscillating member (40) in contact therewith. The bottle section (31) is constituted of a large capacity section (B) and a small capacity section (b) in communication with the large capacity section (B) through an opening (32), and opposing to the distal end (41) of the horn oscillating member (40). The small capacity section (b) is formed such that the liquid (L′) therein is in contact with a point in the proximity of the contact section between the distal end (41) of the horn oscillating member (40) and the mesh member (1).
    Type: Application
    Filed: April 1, 2003
    Publication date: March 18, 2004
    Inventors: Takao Terada, Kei Asai, Masato Arai, Shinichi Itoh, Shinya Tanaka, Masashi Osuga, Toshiji Takahashi
  • Publication number: 20040045547
    Abstract: A bush (31) is fitted into a housing (10) and an ultrasonic pump (12) is supported liquid tightly by the bush (31). The ultrasonic pump (12) is constituted by a pump shaft (21) formed to include a pump bore (22) passing through it axially and having upper and lower ends which are open, and an ultrasonic vibrator (23) mounted on the pump shaft (21) in the vicinity of the midpoint thereof in terms of the axial direction. A liquid vessel.(16) is mounted in the housing (10) in a freely attachable and detachable manner, and the lower end portion of the pump shaft (21) is received inside the liquid vessel (16). A cap (15) is freely detachably attached to the upper end portion of the housing (10) so as to cover the upper end portion of the pump shaft (21). The top side of the cap (15) is provided with a spray port (51), and a step portion (57) is formed for supporting a mesh plate (14) at the periphery thereof at a position below the spray port (51).
    Type: Application
    Filed: July 23, 2003
    Publication date: March 11, 2004
    Applicant: OMRON Corporation
    Inventors: Hirohito Yamamoto, Kei Asai
  • Publication number: 20040031488
    Abstract: A secondary reservoir (16) is filled with a liquid medicine by a fixed amount via a liquid transfer path (18) from a primary reservoir (10) for storing the liquid medicine to be nebulized. When a liquid supply button (40) is slid to left, an operating rod (42) pushes a piston (20) and power supply switch turns on. As piston (20) moves to left, the liquid medicine in secondary reservoir (16) is pushed, thereby moving a valve (22) to left and opening a liquid transfer path (24). Then, a nebulizing part is supplied with the fixed amount of liquid medicine from secondary reservoir (16), and thus performs nebulization. Thus, a liquid nebulizing apparatus is attained, in which a constant amount of liquid is transferred to the nebulizing part to stabilize the nebulization, and in which such a function is realized at low costs.
    Type: Application
    Filed: April 4, 2003
    Publication date: February 19, 2004
    Inventors: Takao Terada, Kei Asai, Masato Arai, Jutaro Nishimura, Makoto Tabata, Shinya Tanaka, Shinichi Itoh
  • Patent number: 6651650
    Abstract: A bush (31) is fitted into a housing (10) and an ultrasonic pump (12) is supported liquid tightly by the bush (31). The ultrasonic pump (12) is constituted by a pump shaft (21) formed to include a pump bore (22) passing through it axially and having upper and lower ends which are open, and an ultrasonic vibrator (23) mounted on the pump shaft (21) in the vicinity of the midpoint thereof in terms of the axial direction. A liquid vessel (16) is mounted in the housing (10) in a freely attachable and detachable manner, and the lower end portion of the pump shaft (21) is received inside the liquid vessel (16). A cap (15) is freely detachably attached to the upper end portion of the housing (10) so as to cover the upper end portion of the pump shaft (21). The top side of the cap (15) is provided with a spray port (51), and a step portion (57) is formed for supporting a mesh plate (14) at the periphery thereof at a position below the spray port (51).
    Type: Grant
    Filed: October 4, 1994
    Date of Patent: November 25, 2003
    Assignee: Omron Corporation
    Inventors: Hirohito Yamamoto, Kei Asai, Masaru Obata
  • Publication number: 20030056789
    Abstract: An inhaler has a tubular case defining inside a flow route for medicament. A capsule containing the medicament serving as its source is on the upstream side and a mouthpiece is on the opposite downstream side. A rotor with a convex surface on the upstream side is rotatably placed in the flow route inside the tubular case. A motor rotates the rotor when a patient breathes in the medicament such that a shearing force will operate on the medicament particles and the medicament is separated from lactose.
    Type: Application
    Filed: September 10, 2002
    Publication date: March 27, 2003
    Applicant: OMRON Corporation
    Inventors: Hiroshi Takano, Kei Asai, Makoto Tabata