Patents by Inventor Hidekazu Hoshino

Hidekazu Hoshino 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: 9688090
    Abstract: An identification medium can be used in an opening label, clearly show signs of it having been opened, and also have a superior authenticity-confirming function. The identification medium has a structure including, in the following order as seen from the side of observation: an optical function layer that generates a color shift, a separation layer that is partially formed, a printed layer, and an adhesive layer, in which when an adhesive strength between the adhesive layer and an adherend is set to be Xa, an adhesive strength between the adhesive layer and the printed layer is set to be Xb, and an adhesive strength at a portion in which the separation layer is laminated between the optical function layer and the printed layer is set to be Xc, the adhesive strength of each part is set to satisfy Xa>Xb>Xc or Xb>Xa>Xc.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: June 27, 2017
    Assignee: NHK SPRING CO., LTD.
    Inventors: Hidekazu Hoshino, Itsuo Takeuchi, Tokio Sakauchi, Tooru Ida, Shinei Suzuki
  • Patent number: 9643444
    Abstract: An identification medium can be affixed to cloth or leather products by sewing. A cholesteric liquid crystal layer on which an embossed surface for forming a hologram is formed, is sandwiched between a first supporting member and a second supporting member. A mounting region that can be affixed to clothing, etc., by sewing, is formed.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: May 9, 2017
    Assignee: NHK SPRING CO., LTD.
    Inventors: Hidekazu Hoshino, Itsuo Takeuchi, Tohru Ida, Seiya Shibuya
  • Patent number: 9298036
    Abstract: In an identification medium, switching of images can be clearly observed, and the medium has a structure produced at low cost. The structure comprises a cholesteric liquid crystal layer 102 in which a hologram is formed, and which selectively reflects circularly polarized light of a specific rotating direction of a specific central wavelength, a cholesteric liquid crystal layer reflecting the entire range of visible light 105 which has reflection characteristics equivalent to a case of reflecting the entire range of visible light and which reflects circularly polarized light of the same rotating direction as the circularly polarized light reflected from the cholesteric liquid crystal layer 102, and a display pattern 106 having a specific content displayed, arranged in this order, as seen from the side of observation.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: March 29, 2016
    Assignee: NHK SPRING CO., LTD.
    Inventors: Hidekazu Hoshino, Itsuo Takeuchi, Seiya Shibuya, Tooru Ida
  • Publication number: 20150323898
    Abstract: An identification medium can be used in an opening label, clearly show signs of it having been opened, and also have a superior authenticity-confirming function. The identification medium has a structure including, in the following order as seen from the side of observation: an optical function layer that generates a color shift, a separation layer that is partially formed, a printed layer, and an adhesive layer, in which when an adhesive strength between the adhesive layer and an adherend is set to be Xa, an adhesive strength between the adhesive layer and the printed layer is set to be Xb, and an adhesive strength at a portion in which the separation layer is laminated between the optical function layer and the printed layer is set to be Xc, the adhesive strength of each part is set to satisfy Xa>Xb>Xc or Xb>Xa>Xc.
    Type: Application
    Filed: October 2, 2013
    Publication date: November 12, 2015
    Inventors: Hidekazu HOSHINO, Itsuo TAKEUCHI, Tokio SAKAUCHI, Tooru IDA, Shinei SUZUKI
  • Publication number: 20150069128
    Abstract: An optical reading device authenticates an identification medium with cholesteric liquid crystal layer, having a structure in which no movable parts are necessary for switching circular circularly polarized light filter. The optical reading device reads an image from an identification medium having a cholesteric liquid crystal layer having a hologram processed, and an ink printed pattern layer in this order, and the device includes a light emitting part in which a right circularly polarized light filter is arranged in front of an LED, a light emitting part in which a right circularly polarized light filter is arranged in front of an LED, and a controlling part which switches light emission between the light emitting parts.
    Type: Application
    Filed: March 11, 2013
    Publication date: March 12, 2015
    Inventors: Hidekazu Hoshino, Itsuo Takeuchi, Shinsuke Yoshida, Seiya Shibuya, Tohru Ida, Syuhei Okubo
  • Publication number: 20150062504
    Abstract: An identification medium can be affixed to cloth or leather products by sewing. A cholesteric liquid crystal layer on which an embossed surface for forming a hologram is formed, is sandwiched between a first supporting member and a second supporting member. A mounting region that can be affixed to clothing, etc., by sewing, is formed.
    Type: Application
    Filed: March 14, 2013
    Publication date: March 5, 2015
    Inventors: Hidekazu Hoshino, Itsuo Takeuchi, Tohru Ida, Seiya Shibuya
  • Patent number: 8970953
    Abstract: An identification medium is provided in which latent image having plural colors can be observed even when the identification medium is spaced away from a polarization filter. A cholesteric liquid crystal layer is provided as a specific polarization light reflection layer which reflects light having a specific polarized condition. An optical anisotropic layer having an optical anisotropy is provided at an upper position overlapping with the specific polarization light reflection layer. An image A fanned by an area having an optical anisotropy different from that of surroundings is formed at the optical anisotropic layer. When the identification medium is directly viewed, the influence of the optical anisotropy cannot be seen. When the identification medium is observed via a circular polarization filter, the image can be seen to have a specific color by the influence of the optical anisotropy.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: March 3, 2015
    Assignee: NHK Spring Co., Ltd.
    Inventors: Hidekazu Hoshino, Itsuo Takeuchi, Tokio Sakauchi, Seiya Shibuya, Tohru Ida
  • Patent number: 8915437
    Abstract: A technique detects counterfeit products having appearances similar to authentic products with high accuracy. A cholesteric liquid crystal layer in which hologram is processed and circularly polarized light of primary rotating direction having specific central wavelength can be selectively reflected and a code forming layer in which code printed pattern that is an objective of reading is formed, are arranged in this order seen from a side from which reading is performed. The hologram image that inhibits reading of information of the code while an optical reading device reads it together with the code, and it is formed by the hologram processing.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: December 23, 2014
    Assignee: NHK Spring Co., Ltd.
    Inventors: Hidekazu Hoshino, Itsuo Takeuchi, Tokio Sakauchi, Tohru Ida
  • Publication number: 20140160540
    Abstract: An identification medium cannot be reused when an attempt has been made to remove it from an object by using solvent. A cholesteric liquid crystal layer subjected to a hologram processing is formed while contacting a COP (cycloolefin polymer) layer. When the identification medium is removed using a solvent from a state in which it was adhered to an object by an adhesive layer, the COP layer is melted by the solvent and is damaged. The COP layer is a layer which functions as a substrate of the identification medium, and the identification medium is damaged by contacting with the solvent, as described above, and it is difficult to reuse.
    Type: Application
    Filed: February 21, 2012
    Publication date: June 12, 2014
    Applicant: NHK SPRING CO., LTD.
    Inventors: Hidekazu Hoshino, Itsuo Takeuchi, Seiya Shibuya, Tooru Ida
  • Patent number: 8749750
    Abstract: A discrimination medium, which can have much information, can be produced on a small scale at low cost, and enables change of a sticker design at low cost, is provided. The discrimination medium includes an optically transparent first substrate on which a cholesteric liquid crystal layer is formed, the cholesteric liquid crystal layer being formed with a fine asperity used for displaying a hologram, an optically transparent second substrate on which a print layer is formed, the print layer having a predetermined pattern made of ink and having a transparent portion without the ink of the pattern around the pattern, the pattern reflecting or absorbing a light of a predetermined wavelength, and a transparent adhesive layer, wherein the optically transparent first substrate, the optically transparent second substrate, and the transparent adhesive layer, are disposed in turn from a side checked visually.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 10, 2014
    Assignee: NHK Spring Co., Ltd.
    Inventors: Hidekazu Hoshino, Tokio Sakauchi, Mutsumi Sasaki, Tohru Ida, Naomi Iida
  • Patent number: 8652592
    Abstract: A discrimination medium on which printing can be freely performed, which cannot be easily falsified, in which the authenticity can be easily discriminated by unique appearance, and which can be produced at low cost, is provided. A cholesteric liquid crystal layer 10, and a breakable print recording layer are laminated in the discrimination medium. The cholesteric liquid crystal layer 10 has plural light transparent films, which are laminated and are different from each other in refraction index. Therefore, the discrimination medium has unique optical characteristics such that a character, a symbol, a pattern, a figure formed by printing by a thermal printer or the like changes in color depending on the viewing angle. A discrimination method using the above optical characteristics of the discrimination medium is provided.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: February 18, 2014
    Assignee: NHK Spring Co., Ltd.
    Inventors: Hidekazu Hoshino, Itsuo Takeuchi
  • Publication number: 20140022493
    Abstract: In an identification medium, switching of images can be clearly observed, and the medium has a structure produced at low cost. The structure comprises a cholesteric liquid crystal layer 102 in which a hologram is formed, and which selectively reflects circularly polarized light of a specific rotating direction of a specific central wavelength, a cholesteric liquid crystal layer reflecting the entire range of visible light 105 which has reflection characteristics equivalent to a case of reflecting the entire range of visible light and which reflects circularly polarized light of the same rotating direction as the circularly polarized light reflected from the cholesteric liquid crystal layer 102, and a display pattern 106 having a specific content displayed, arranged in this order, as seen from the side of observation.
    Type: Application
    Filed: March 8, 2012
    Publication date: January 23, 2014
    Applicant: NHK SPRING CO., LTD.
    Inventors: Hidekazu Hoshino, Itsuo Takeuchi, Seiya Shibuya, Tooru Ida
  • Publication number: 20130105076
    Abstract: A method for production of an identification medium, includes a forming step in which a code printed pattern is formed by printing; and a joining step in which the code printed pattern and a cholesteric liquid crystal layer are joined; wherein the identification medium includes, in order, seen from an observing side: a cholesteric liquid crystal layer, in which a hologram is processed and right circularly polarized light ?/4 plate and a linearly polarizing filter from the observing side, in which left circularly polarized light selectively penetrates toward the cholesteric liquid crystal layer when natural light enters from the opposite side to the cholesteric liquid crystal layer side; and a code printed pattern, in which a two-dimensional codes is formed.
    Type: Application
    Filed: June 29, 2011
    Publication date: May 2, 2013
    Applicant: NHK SPRING CO., LTD.
    Inventors: Hidekazu Hoshino, Itsuo Takeuchi, Tokio Sakauchi, Tohru Ida
  • Publication number: 20130099000
    Abstract: A technique detects counterfeit products having appearances similar to authentic products with high accuracy. A cholesteric liquid crystal layer in which hologram is processed and circularly polarized light of primary rotating direction having specific central wavelength can be selectively reflected and a code forming layer in which code printed pattern that is an objective of reading is formed, are arranged in this order seen from a side from which reading is performed. The hologram image that inhibits reading of information of the code while an optical reading device reads it together with the code, and it is formed by the hologram processing.
    Type: Application
    Filed: June 29, 2011
    Publication date: April 25, 2013
    Applicant: NHK SPRING CO., LTD.
    Inventors: Hidekazu Hoshino, Itsuo Takeuchi, Tokio Sakauchi, Tohru Ida
  • Patent number: 8421987
    Abstract: A discrimination medium, which can have much information, can be produced on a small scale at low cost, and enables change of a sticker design at low cost, is provided. A cholesteric liquid crystal layer, having a fine asperity for forming a hologram, is formed on a transparent first substrate. A print layer composed of a black ink is formed on a transparent second substrate. The substrates are affixed to each other via a bond layer, so that a discrimination medium is obtained. In the discrimination medium, the display content obtained by the print layer is changed, so that the display content for discrimination can be changed at low cost.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: April 16, 2013
    Assignee: NHK Spring Co., Ltd.
    Inventors: Hidekazu Hoshino, Tokio Sakauchi, Mutsumi Sasaki, Tohru Ida, Naomi Iida
  • Patent number: 8322753
    Abstract: An identification medium is to be observed via a linearly polarizing filter and includes a first liquid crystal layer that changes the wavelength of light according to the rotational angle of the linearly polarizing filter, a cholesteric liquid crystal layer, and a light absorbing layer that is provided below the cholesteric liquid crystal layer.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: December 4, 2012
    Assignees: NHK Spring Co., Ltd., Nippon Oil Corporation
    Inventors: Hidekazu Hoshino, Itsuo Takeuchi, Tokio Sakauchi, Suzushi Nishimura, Gorou Suzaki
  • Patent number: 8279394
    Abstract: An object of the present invention is to provide a discrimination medium which has high discrimination ability, and which is more difficult to counterfeit than conventional discrimination mediums. A discrimination medium comprises: a cholesteric liquid crystal layer; and a liquid crystal layer acting as a half-wave plate and provided on the cholesteric liquid crystal layer in a predetermined pattern.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: October 2, 2012
    Assignees: NHK Spring Co., Ltd., Nippon Oil Corporation
    Inventors: Hidekazu Hoshino, Itsuo Takeuchi, Suzushi Nishimura, Gorou Suzaki
  • Publication number: 20120236292
    Abstract: An identification medium is provided in which latent image having plural colors can be observed even when the identification medium is spaced away from a polarization filter. A cholesteric liquid crystal layer is provided as a specific polarization light reflection layer which reflects light having a specific polarized condition. An optical anisotropic layer having an optical anisotropy is provided at an upper position overlapping with the specific polarization light reflection layer. An image A formed by an area having an optical anisotropy different from that of surroundings is formed at the optical anisotropic layer. When the identification medium is directly viewed, the influence of the optical anisotropy cannot be seen. When the identification medium is observed via a circular polarization filter, the image can be seen to have a specific color by the influence of the optical anisotropy.
    Type: Application
    Filed: November 12, 2010
    Publication date: September 20, 2012
    Applicant: NHK SPRING CO., LTD.
    Inventors: Hidekazu Hoshino, Itsuo Takeuchi, Tokio Sakauchi, Seiya Shibuya, Tohru Ida
  • Patent number: 8168080
    Abstract: An identifying medium comprises a nematic liquid crystal layer for forming a latent image with gradation, and the nematic liquid crystal layer has a thickness distribution corresponding to the gradation.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: May 1, 2012
    Assignee: NHK Spring Co., Ltd.
    Inventors: Hidekazu Hoshino, Itsuo Takeuchi, Shinya Nasubida
  • Patent number: 8158239
    Abstract: An identification medium provided with a laminated structure comprises laminated layers of a magnetically controllable layer, in which magnetic microcapsules are dispersed, and a color shifting layer.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: April 17, 2012
    Assignee: NHK Spring Co., Ltd.
    Inventors: Itsuo Takeuchi, Hidekazu Hoshino, Shinya Nasubida