Patents by Inventor Yoshihiro Iwao

Yoshihiro Iwao 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: 9808609
    Abstract: The invention provides a patch and a patch preparation having an adhesive layer with a high adhesive force, wherein the hydrophobic adhesive layer does not bloom even when an organic fluid component having high polarity is contained therein. The patch contains a support and an adhesive layer on at least one surface of the support, wherein the adhesive layer contains a synthetic rubber having a viscosity average molecular weight of 500,000-1,600,000, an organic fluid component having high polarity, a tackifier, and magnesium aluminometasilicate. In the patch preparation, the above-mentioned adhesive layer further contains a drug.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: November 7, 2017
    Assignee: Nitto Denko Corporation
    Inventors: Masato Nishimura, Yoshihiro Iwao, Katsuhiro Okada, Kensuke Matsuoka
  • Patent number: 9433533
    Abstract: The present invention provides a patch package structure, which includes: a package including a first sheet material which is planar and a second sheet material which has been molded, the first and second sheet materials being sealed together in peripheral parts thereof, and a patch disposed in the package, in which the patch contains a backing, a pressure-sensitive adhesive layer laminated on at least one side of the backing, and a release liner which protects a pressure-sensitive adhesive surface of the pressure-sensitive adhesive layer; the second sheet material has been molded so as to have a protrudent part in at least a substantially central area thereof, the protrudent part having a planar outer shape larger than a planar outer shape of the release liner and having at least one recessed part; d is not smaller than T, in which d is the minimum gap distance between the inner surface of the first sheet material and the inner surface of the second sheet material at the recessed part and T is a thickness of
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: September 6, 2016
    Assignee: NITTO DENKO CORPORATION
    Inventors: Katsuhiro Okada, Yoshihiro Iwao, Kensuke Matsuoka
  • Patent number: 9351942
    Abstract: The invention provides a patch and a patch preparation having an adhesive layer with a high adhesive force, wherein the hydrophobic adhesive layer does not bloom even when an organic fluid component having high polarity is contained therein. The patch contains a support and an adhesive layer on at least one surface of the support, wherein the adhesive layer contains a synthetic rubber having a viscosity average molecular weight of 1,700,000-6,500,000, an organic fluid component having high polarity, a tackifier, and magnesium aluminometasilicate. In the patch preparation, the above-mentioned adhesive layer further contains a drug.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: May 31, 2016
    Assignee: Nitto Denko Corporation
    Inventors: Masato Nishimura, Yoshihiro Iwao, Katsuhiro Okada, Kensuke Matsuoka
  • Patent number: 9326952
    Abstract: The invention is intended to provide an adhesive patch which contains a drug except bisoprolol and which effectively inhibits the occurrence of oozing out or sticking out of the adhesive layer components from the exposed area of the adhesive layer of the adhesive patch during storage as well as the occurrence of oozing out of the drug from the adhesive layer thereby preventing the reduction in drug content. The support, the release liner and the adhesive layer constituting the adhesive patch each are formed to have a rectangular planar shape and the entire adhesive patch are formed to have a rectangular planar shape, and a protrudent part is formed on the support-side surface of the adhesive patch at a corner thereof. In addition, the adhesive patch may be formed to have a middle part and a peripheral part, and the protrudent part may be formed at a corner of the rectangular middle part.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: May 3, 2016
    Assignee: NITTO DENKO CORPORATION
    Inventors: Yoshihiro Iwao, Kensuke Matsuoka, Kazuhiro Aoyagi
  • Patent number: 9040077
    Abstract: The present invention provides to a patch and a patch preparation having low stretchability, which can be continuously adhered to the skin for a long time without undesirable detachment and marked falling off from the skin due to various factors during adhesion, and specifically provides a low stretchable patch and a patch preparation containing a support and an adhesive layer formed on one surface of the support, wherein a ratio P of the total length W (mm) of curved sections of a planar outer shape of the patch to the total length S (mm) of straight-line sections of the planar outer shape of the patch (W/S) is not more than 1.22, and, when the curved sections are approximated by a circular arc, the radius R (mm) of the circular arc is not less than 0.5 mm.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: May 26, 2015
    Assignee: NITTO DENKO CORPORATION
    Inventors: Sachiko Terashi, Akinori Hanatani, Hitoshi Akemi, Yoshihiro Iwao
  • Patent number: 9005174
    Abstract: The invention is intended to provide an adhesive patch which contains a drug except bisoprolol and which effectively inhibits the occurrence of oozing out or sticking out of the adhesive layer components from the exposed area of the adhesive layer of the adhesive patch during storage as well as the occurrence of oozing out of the drug from the adhesive layer thereby preventing the reduction in drug content. The support, the release liner and the adhesive layer constituting the adhesive patch each are formed to have a rectangular planar shape and the entire adhesive patch are formed to have a rectangular planar shape, and a protrudent part is formed on the support-side surface of the adhesive patch at a corner thereof. In addition, the adhesive patch may be formed to have a middle part and a peripheral part, and the protrudent part may be formed at a corner of the rectangular middle part.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: April 14, 2015
    Assignee: Nitto Denko Corporation
    Inventors: Yoshihiro Iwao, Kensuke Matsuoka, Kazuhiro Aoyagi
  • Patent number: 8974816
    Abstract: The present invention provides a water resistant patch preparation having a central part and a peripheral part, which preparation is comprised of a support and an adhesive layer comprising a drug, which is formed on one surface of the support, wherein at least a part of a lateral end of the adhesive layer in the peripheral part is located inside a lateral end of the support, and the adhesive layer in the peripheral part has a thickness smaller than that of the adhesive layer in the central part.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: March 10, 2015
    Assignee: Nitto Denko Corporation
    Inventors: Kazuhiro Aoyagi, Yoshihiro Iwao, Kensuke Matsuoka
  • Patent number: 8808731
    Abstract: An adhesive pharmaceutical preparation which has a less irritation to the skin surface, keeps excellent stability of bisoprolol in the preparation, and allows continuous administration of a pharmacologically effective amount of bisoprolol into the living body, is provided. The adhesive preparation 10 comprises a support 1, an adhesive layer 2 laminated on one surface of the support 1. The adhesive layer 2 is characterized by containing bisoprolol, polyisobutylene, tackifier, and an organic liquid ingredient compatible to polyisobutylene and tackifier. Thus, an adhesive pharmaceutical preparation which has a good adhesiveness with less irritation to the skin and which gives almost no pain at peel-off or removal from the skin surface with leaving almost no paste, can be provided. In addition, bisoprolol is very stably maintained in the preparation and a pharmacologically effective amount of bisoprolol can be administered continuously into the living body through the skin surface.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: August 19, 2014
    Assignees: Nitto Denko Corporation, Toa Eiyo Ltd.
    Inventors: Yoshihiro Iwao, Katsuyuki Ookubo, Katsuhiro Okada, Kunihiro Minami, Shuichiro Yuasa
  • Publication number: 20140158571
    Abstract: A packaging structure (100) for a patch includes a first and second base materials (120, 130) which have a peripheral edge part laminated with each other, and the patch is included therein. The first and second base materials (120, 130) have a first to forth sides (121 to 124, 131-134). At least one of the first and second base materials (120, 130) has a first to third opening parts (125 to 127, 135 to 137). The first to third opening parts (125 to 127, 135 to 137) guides so as to open toward the inner peripheral edge (120c1, 120c2, 120c4, 130c1, 130c2, 130c4) of the sealing part (120c, 130c).
    Type: Application
    Filed: July 13, 2012
    Publication date: June 12, 2014
    Applicants: TOA EIYO LTD., NITTO DENKO CORPORATION
    Inventors: Kensuke Matsuoka, Yoshihiro Iwao, Jun Harima, Masakatsu Konno, Kazuhiro Aoyagi, Tomoya Tanaka, Mikio Toyota, Yasuhiko Akita, Tadashi Matsui
  • Patent number: 8703178
    Abstract: The present invention relates to a percutaneous administration device of bisoprolol, which includes a backing; and a pressure-sensitive adhesive layer containing bisoprolol, which is laminated on one surface of the backing, wherein the maximum value of a release rate of bisoprolol during a period of from immediately after the application on skin until a lapse of 24 hours is 30 ?g/cm2/hr or less; and wherein the release rate of bisoprolol at the time of a lapse of 24 hours after the application on skin is 10 ?g/cm2/hr or less. The percutaneous administration device of the present invention is reduced in the skin irritation during the application, especially at the time of peeling, and is capable of persistently administrating a therapeutically or preventively effective amount of bisoprolol into a living body.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: April 22, 2014
    Assignees: Nitto Denko Corporation, Toa Eiyo Ltd.
    Inventors: Yoshihiro Iwao, Kensuke Matsuoka, Katsuhiro Okada, Kunihiro Minami, Shuichiro Yuasa
  • Publication number: 20140083890
    Abstract: An object of the present invention is to provide a packaging material that is capable of long term storage by preventing adsorption or transfer of an easily oxidizable component and an oily component in an adhesive of a patch to the packaging material, and also preventing discoloration and decrease in drug effect due to oxidization. The present invention provides the packaging material for a patch including: an inner layer made of polyethylene terephthalate having heat sealing properties; an oxygen-absorbing layer that includes an oxygen-absorbing resin having an unsaturated alicyclic structure as an oxygen-absorbing part; and an oxygen barrier layer made of aluminum foil as an outer layer.
    Type: Application
    Filed: September 16, 2013
    Publication date: March 27, 2014
    Applicants: Nitto Denko Corporation, Toyo Seikan Group Holdings, Ltd.
    Inventors: Yoichi Ishizaki, Yoshihiro Ohta, Akinori Hanatani, Sachiko Sakamoto, Tsuyoshi Mukobata, Yoshihiro Iwao
  • Publication number: 20130315978
    Abstract: The invention provides a patch and a patch preparation having an adhesive layer with a high adhesive force, wherein the hydrophobic adhesive layer does not bloom even when an organic fluid component having high polarity is contained therein. The patch contains a support and an adhesive layer on at least one surface of the support, wherein the adhesive layer contains a synthetic rubber having a viscosity average molecular weight of 1,700,000-6,500,000, an organic fluid component having high polarity, a tackifier, and magnesium aluminometasilicate. In the patch preparation, the above-mentioned adhesive layer further contains a drug.
    Type: Application
    Filed: February 1, 2012
    Publication date: November 28, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Masato Nishimura, Yoshihiro Iwao, Katsuhiro Okada, Kensuke Matsuoka
  • Publication number: 20130310777
    Abstract: The invention provides a patch and a patch preparation having an adhesive layer with a high adhesive force, wherein the hydrophobic adhesive layer does not bloom even when an organic fluid component having high polarity is contained therein. The patch contains a support and an adhesive layer on at least one surface of the support, wherein the adhesive layer contains a synthetic rubber having a viscosity average molecular weight of 500,000-1,600,000, an organic fluid component having high polarity, a tackifier, and magnesium aluminometasilicate. In the patch preparation, the above-mentioned adhesive layer further contains a drug.
    Type: Application
    Filed: February 1, 2012
    Publication date: November 21, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Masato Nishimura, Yoshihiro Iwao, Katsuhiro Okada, Kensuke Matsuoka
  • Publication number: 20130006203
    Abstract: The invention is intended to provide an adhesive patch which effectively inhibits the occurrence of oozing out or sticking out of the adhesive layer components from the exposed area of the adhesive layer of the adhesive patch during storage as well as the occurrence of oozing of bisoprolol or a salt thereof from the adhesive layer thereby preventing the reduction in drug content. The support, the release liner and the adhesive layer constituting the adhesive patch each are formed to have a rectangular planar shape and the entire adhesive patch are formed to have a rectangular planar shape, and a protrudent part is formed on the support-side surface of the adhesive patch at a corner thereof. In addition, the adhesive patch may be formed to have a middle part and a peripheral part, and the protrudent part may be formed at a corner of the rectangular middle part.
    Type: Application
    Filed: February 23, 2011
    Publication date: January 3, 2013
    Applicants: TOA EIYO LTD., NITTO DENKO CORPORATION
    Inventors: Yoshihiro Iwao, Kensuke Matsuoka, Kazuhiro Aoyagi, Jun Harima, Masakatsu Konno
  • Publication number: 20120323191
    Abstract: The invention is intended to provide an adhesive patch which contains a drug except bisoprolol and which effectively inhibits the occurrence of oozing out or sticking out of the adhesive layer components from the exposed area of the adhesive layer of the adhesive patch during storage as well as the occurrence of oozing out of the drug from the adhesive layer thereby preventing the reduction in drug content. The support, the release liner and the adhesive layer constituting the adhesive patch each are formed to have a rectangular planar shape and the entire adhesive patch are formed to have a rectangular planar shape, and a protrudent part is formed on the support-side surface of the adhesive patch at a corner thereof. In addition, the adhesive patch may be formed to have a middle part and a peripheral part, and the protrudent part may be formed at a corner of the rectangular middle part.
    Type: Application
    Filed: February 23, 2011
    Publication date: December 20, 2012
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshihiro Iwao, Kensuke Matsuoka, Kazuhiro Aoyagi
  • Patent number: 8298572
    Abstract: In the adhesive pharmaceutical preparation of the invention containing bisoprolol, a pressure-sensitive adhesive layer is laminated on one side of the backing. The pressure-sensitive adhesive layer contains a branched monoalcohol having from 12 to 28 carbon atoms, a free base of bisoprolol and a polyisobutylene pressure-sensitive adhesive. Accordingly, compatibility of the polyisobutylene pressure-sensitive adhesive with the free base of bisoprolol can be specifically increased. As a result, not only it becomes possible to increase blending amount of the free base of bisoprolol but also bleed of the free base of bisoprolol from the pressure-sensitive adhesive layer can be suppressed and, what is more, the pressure-sensitive adhesion characteristics sufficient from the practical point of view can be obtained.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: October 30, 2012
    Assignees: Nitto Denko Corporation, Toa Eiyo Ltd.
    Inventors: Yoshihiro Iwao, Katsuyuki Ookubo, Katsuhiro Okada, Kunihiro Minami, Shuichiro Yuasa
  • Patent number: 8251213
    Abstract: The present invention relates to a patch package structure which includes: a package including a first sheet material and a second sheet material, the first and second sheet materials being sealed together in peripheral parts thereof; and a patch disposed in the package, the patch contains a backing, a pressure-sensitive adhesive layer laminated on at least one side of the backing, and a release liner which protects a pressure-sensitive adhesive surface of the pressure-sensitive adhesive layer, the release liner having on a surface thereof a cut line supporting a peel-off of the release liner at the time of using the patch, the patch being disposed in the package so that the release liner faces the inner surface of the first sheet material, the first sheet material having a first region in which the inner surface of the first sheet material faces the cut line of the release liner, the first sheet material having in the first region a minimum first distance between the inner surface of the first sheet material
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: August 28, 2012
    Assignee: Nitto Denko Corporation
    Inventors: Katsuhiro Okada, Yoshihiro Iwao, Kensuke Matsuoka
  • Publication number: 20120189796
    Abstract: The present invention relates to a sheet-shaped patch including a pressure-sensitive adhesive layer on one surface of a backing to provide a pressure-sensitive adhesive surface showing adhesiveness at ordinary temperature and further including a release liner covering the pressure-sensitive adhesive surface. More specifically, the present invention relates to a sheet-shaped patch where the release liner is formed in a state of being splittable by a parting line. The patch ensures that the pressure-sensitive adhesive surface can be kept from being largely exposed due to slight stress before use and at the same time, the release liner can be easily split when using the patch.
    Type: Application
    Filed: January 25, 2012
    Publication date: July 26, 2012
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kazuhiro AOYAGI, Yoshihiro IWAO, Kensuke MATSUOKA, Tomoya TANAKA
  • Patent number: 8146741
    Abstract: A blister package comprises a blister and a cover sheet, and the blister has a groove formed in an outer edge section of the blister. The outer edge section of the blister includes an outer region and an inner region, the groove is formed on the inward side of the outer region, and the inner region is formed on the inward side of the groove. The peel strength between the outer region and the cover sheet is greater than the tear strength of the cover sheet, and the peel strength between the inner region and cover sheet is smaller than the tear strength of the cover sheet.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: April 3, 2012
    Assignee: Nitto Denko Corporation
    Inventors: Kensuke Matsuoka, Yoshihiro Iwao, Katsuhiro Okada
  • Patent number: 8141706
    Abstract: The present invention relates to a patch package structure which includes: a package including a first sheet material and a second sheet material, the first and second sheet materials being sealed together in peripheral parts thereof; and a patch disposed in the package, the patch contains a backing, a pressure-sensitive adhesive layer laminated on at least one side of the backing, and a release liner which protects a pressure-sensitive adhesive surface of the pressure-sensitive adhesive layer, the release liner having on a surface thereof a cut line supporting a peel-off of the release liner at the time of using the patch, the patch being disposed in the package so that the release liner faces the inner surface of the first sheet material, the first sheet material having a first region in which the inner surface of the first sheet material faces the cut line of the release liner, the first sheet material having in the first region a minimum first distance between the inner surface of the first sheet material
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: March 27, 2012
    Assignee: Nitto Denko Corporation
    Inventors: Katsuhiro Okada, Yoshihiro Iwao, Kensuke Matsuoka