Patents by Inventor Masanobu Iwasa

Masanobu Iwasa 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).

  • Patent number: 10131472
    Abstract: Provided is a vial rubber stopper using multiple types of rubber to prevent the vial rubber stopper from being scraped and from sticking to a presser plate. The vial rubber stopper includes: a cap portion having a flange; a piercing area formed to have a recess at a top surface of the cap portion and configured to traverse longitudinally the cap portion in an axial direction from the recess to a bottom surface of the cap portion; and a leg portion formed on the bottom surface of the cap portion in a way of extending downward and located outside the piercing area with respect to an axial center of the cap portion. The piercing area is formed of rubber having rubber hardness from 20 to 35, and the top surface other than the recess of the cap portion is formed of rubber having rubber hardness from 58 to 90.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: November 20, 2018
    Assignee: NIPRO CORPORATION
    Inventors: Takashi Asai, Tadatoshi Uchida, Masanobu Iwasa, Ryouji Komatsu
  • Patent number: 9731077
    Abstract: A plunger for a syringe, in which a plunger rod can be prevented by a simple structure from unavoidably falling out of place. The plunger for a syringe includes the plunger rod and a gasket. The gasket is closed at its upper end and has an inner space, and an opening having a diameter smaller than the diameter of the inner space is provided in the lower end of the gasket. The plunger rod has a collar installed at the tip of the plunger rod. When the collar is positioned in the inner space of the gasket, the plunger rod and the gasket are freely movably fitted together without intimate contact between them.
    Type: Grant
    Filed: July 31, 2006
    Date of Patent: August 15, 2017
    Assignee: NIPRO CORPORATION
    Inventors: Shigeki Tanaka, Masanobu Iwasa, Ryohei Namba, Hidero Kato, Teruhisa Hirobe
  • Publication number: 20130270271
    Abstract: Provided is a vial rubber stopper using multiple types of rubber to prevent the vial rubber stopper from being scraped and from sticking to a presser plate. The vial rubber stopper includes: a cap portion having a flange; a piercing area formed to have a recess at a top surface of the cap portion and configured to traverse longitudinally the cap portion in an axial direction from the recess to a bottom surface of the cap portion; and a leg portion formed on the bottom surface of said cap portion in a way of extending downward and located outside the piercing area with respect to an axial center of said cap portion. The piercing area is formed of rubber having rubber hardness from 20 to 35, and the top surface other than the recess of the cap portion is formed of rubber having rubber hardness from 58 to 90.
    Type: Application
    Filed: December 28, 2010
    Publication date: October 17, 2013
    Applicant: NIPRO CORPORATION
    Inventors: Takashi Asai, Tadatoshi Uchida, Masanobu Iwasa, Ryouji Komatsu
  • Patent number: 8043267
    Abstract: The prefilled syringe filled with a drug in advance, leaking of liquid from the cap is prevented, gas barrier properties are given to the whole of the barrel filled with the drug and the shoulder section so that degradation of the drug is prevented, permeation of microbial contaminants is prevented to a high extent, and efficiency of packing as a compact container can be increased. The prefilled syringe includes a guard-shaped extension projecting from the outer periphery of a shoulder section of the syringe barrel on the nozzle side, and a range from a part where a gasket of the plunger is positioned on the outer surface of the syringe barrel filled with the drug to the guard-shaped extension is covered with barrier packaging.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: October 25, 2011
    Assignee: Nipro Corporation
    Inventors: Ryohei Nanba, Masanobu Iwasa, Mitsuru Hasegawa, Yoshihisa Murai
  • Publication number: 20110178475
    Abstract: A plunger for a syringe, in which a plunger rod can be prevented by a simple structure from unavoidably falling out of place. The plunger for a syringe includes the plunger rod and a gasket. The gasket is closed at its upper end and has an inner space, and an opening having a diameter smaller than the diameter of the inner space is provided in the lower end of the gasket. The plunger rod has a collar installed at the tip of the plunger rod. When the collar is positioned in the inner space of the gasket, the plunger rod and the gasket are freely movably fitted together without intimate contact between them.
    Type: Application
    Filed: July 31, 2006
    Publication date: July 21, 2011
    Inventors: Shigeki Tanaka, Masanobu Iwasa, Ryohei Namba, Hidero Kato, Teruhisa Hirobe
  • Publication number: 20090281504
    Abstract: The prefilled syringe filled with a drug in advance, leaking of liquid from the cap is prevented, gas barrier properties are given to the whole of the barrel filled with the drug and the shoulder section so that degradation of the drug is prevented, permeation of microbial contaminants is prevented to a high extent, and efficiency of packing as a compact container can be increased. The prefilled syringe includes a guard-shaped extension projecting from the outer periphery of a shoulder section of the syringe barrel on the nozzle side, and a range from a part where a gasket of the plunger is positioned on the outer surface of the syringe barrel filled with the drug to the guard-shaped extension is covered with barrier packaging.
    Type: Application
    Filed: August 18, 2006
    Publication date: November 12, 2009
    Applicant: NIPRO CORPORATION
    Inventors: Ryohei Nanba, Masanobu Iwasa, Mitsuru Hasegawa, Yoshihisa Murai
  • Patent number: 7243787
    Abstract: A medicine bag, which includes a bag body having a medicine storage chamber that stores a medicine in such a way that the medicine is visually confirmed through a light-transmission portion provided in at least one part of the bag body, the bag body having a weak seal portion that divides the medicine storage chamber into a plurality of division spaces, and the sealing of the weak seal portion adjacent to a specific division space being removed by increasing the internal pressure of that division space, including: a cover sheet which is peelably attached to the bag body; and a requisitely-used portion which is used in the process shortly before the medicine is administered, in which the cover sheet includes: a light-shielding portion which shields from the light the medicine stored in at least one division space by covering a predetermined part of the light-transmission portion; and a continuously-formed portion which is continuously formed in the light-shielding portion and is placed so that the requisitely-
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: July 17, 2007
    Assignee: Nipro Corporation
    Inventors: Masanobu Iwasa, Minoru Honda, Masaki Ikenoue, Kenji Omori
  • Patent number: 7070741
    Abstract: A holder comprises a base 1 having an inclined plane 11 increased in height from a distal end thereof to the proximal end thereof; air releasing means 2 provided on the proximal end of the base 1; and closing means 3 for closing an opening B1 of a flexible container set on the base 1. The closing means 3 comprises a pressure assembly 31 having closing bars 311, 312 extending in the direction perpendicular to the longitudinal axis X of the base 1,and a lever 32. The pressure assembly 31 is adapted to doubly seal the opening B1 of the flexible container B when the lever 32 is turned over toward the distal end of the base 1.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: July 4, 2006
    Assignee: Nipro Corporation
    Inventors: Masaki Ikenoue, Masanobu Iwasa
  • Publication number: 20040188281
    Abstract: A medicine bag, which includes a bag body having a medicine storage chamber that stores a medicine in such a way that the medicine is visually confirmed through a light-transmission portion provided in at least one part of the bag body, the bag body having a weak seal portion that divides the medicine storage chamber into a plurality of division spaces, and the sealing of the weak seal portion adjacent to a specific division space being removed by increasing the internal pressure of that division space, including: a cover sheet which is peelably attached to the bag body; and a requisitely-used portion which is used in the process shortly before the medicine is administered, in which the cover sheet includes: a light-shielding portion which shields from the light the medicine stored in at least one division space by covering a predetermined part of the light-transmission portion; and a continuously-formed portion which is continuously formed in the light-shielding portion and is placed so that the requisitely-
    Type: Application
    Filed: March 15, 2004
    Publication date: September 30, 2004
    Applicant: NIPRO CORPORATION
    Inventors: Masanobu Iwasa, Minoru Honda, Masaki Ikenoue, Kenji Omori
  • Publication number: 20030077208
    Abstract: A holder comprises a base 1 having an inclined plane 11 increased in height from a distal end thereof to the proximal end thereof; air releasing means 2 provided on the proximal end of the base 1; and closing means 3 for closing an opening B1 of a flexible container set on the base 1. The closing means 3 comprises a pressure assembly 31 having closing bars 311, 312 extending in the direction perpendicular to the longitudinal axis X of the base 1, and a lever 32. The pressure assembly 31 is adapted to doubly seal the opening B1 of the flexible container B when the lever 32 is turned over toward the distal end of the base 1.
    Type: Application
    Filed: October 18, 2002
    Publication date: April 24, 2003
    Inventors: Masaki Ikenoue, Masanobu Iwasa
  • Patent number: 5706937
    Abstract: A flexible and dual-chambered container includes a first frontal sheet fusion bonded to a first rear sheet to define a first chamber for containing, for example, a medical liquid. The first frontal sheet is a flexible and transparent sheet for intercepting water, moisture, and oxygen gas. The first rear sheet is a flexible composite sheet composed of aluminum foil and a water-absorbing stratum. A second frontal sheet is fusion bonded to a second rear sheet to define a second chamber for containing, for example, a medical liquid. The second frontal and rear sheets are joined to the first frontal and rear sheets so that the first and second chambers are isolated by a breakable or weak seal. An opaque and flexible cover sheet composed of aluminum foil is removably disposed on the first frontal sheet. When the weak seal is broken by manually compressing the second chamber, the first and second chambers are brought into liquid communication.
    Type: Grant
    Filed: March 18, 1996
    Date of Patent: January 13, 1998
    Assignee: Nissho Corporation
    Inventors: Hitoshi Futagawa, Noriyoshi Yamamoto, Masanobu Iwasa
  • Patent number: 5350372
    Abstract: A solvent container to be used in combination with a drug container or vial, which comprises a flexible container body containing a solvent therein and having a mouth covered with a self-sealing member, a guide capsule having an open end sealed by a sealing member and being removably mounted on the mouth of the container body; and a double-pointed hollow needle having a sharp piercing edge at each end and being slidably arranged in the guide capsule to constitute a means for communicating the container body with the drug vial in cooperation with the guide capsule.
    Type: Grant
    Filed: May 18, 1993
    Date of Patent: September 27, 1994
    Assignee: Nissho Corporation
    Inventors: Koji Ikeda, Hitoshi Futagawa, Toshihiro Kikuchi, Minoru Honda, Masanobu Iwasa
  • Patent number: 5342346
    Abstract: A fluid container comprises a drug container, a deformable solvent container, a double-pointed hollow needle having a sharp piercing edge at each end and being arranged between the drug container and the solvent container, a guide capsule with a cap rotatably mounted thereon, and a means for converting rotary motion of the cap to a linear motion of the drug container to push the drug container toward the solvent container in cooperation with the cap and the guide capsule so that a fluid communication is made between two containers through the needle.
    Type: Grant
    Filed: April 9, 1993
    Date of Patent: August 30, 1994
    Assignee: Nissho Corporation
    Inventors: Minoru Honda, Masanobu Iwasa, Tetuzi Miyamoto, Koji Ikeda, Toshihiro Kikuchi
  • Patent number: 5233669
    Abstract: A device for detecting positioning marks for cutting a ceramic laminated body having a plurality of inner electrodes formed therein and having a plurality of positioning marks for cutting so formed on its outer side surfaces as to have a predetermined positional relationship with the inner electrodes, which comprises a device for detecting image information obtained from the outer side surfaces of the ceramic laminated body, a binary-coding device for binary-coding the image information detected by the detecting device based on a color density, an image memory for storing the image information binary-coded by the binary-coding device, a characteristic extractor for extracting signal regions having a color density not less than a predetermined color density from the image information stored in the image memory, removing regions having an area not more than a predetermined area and regions having a length in the lateral direction not less than a predetermined length out of the signal regions extracted, and sele
    Type: Grant
    Filed: November 21, 1991
    Date of Patent: August 3, 1993
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Norio Sakai, Masahiro Itou, Masanobu Iwasa
  • Patent number: 4813928
    Abstract: A syringe-needle-like nozzle for tissue adhesive comprising a hub and a deformable cannula without a bevel, the cannula being made of high-ductile metallic material for medical use and fixed in the hub. The nozzle of the present invention is satisfactorily applicable in tissue adhesive injection to complex regions or small regions in organism. Further, there can be carried out the injection of tissue adhesive to different regions by means of suitable deformation of the nozzle shape.
    Type: Grant
    Filed: April 9, 1987
    Date of Patent: March 21, 1989
    Assignees: Hoechst Japan Limited, Nissho Corporation
    Inventors: Michiro Abe, Masanobu Iwasa
  • Patent number: D914876
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: March 30, 2021
    Inventors: Yukihiro Yabe, Minoru Honda, Masanobu Iwasa
  • Patent number: D919803
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: May 18, 2021
    Assignee: NIPRO CORPORATION
    Inventors: Yukihiro Yabe, Minoru Honda, Masanobu Iwasa