Patents by Inventor Kaoru Okaniwa

Kaoru Okaniwa 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: 10312402
    Abstract: The composition for forming a p-type diffusion layer in accordance with the present invention contains an acceptor element-containing glass powder and a dispersion medium. A p-type diffusion layer and a photovoltaic cell having a p-type diffusion layer are prepared by applying the composition for forming a p-type diffusion layer, followed by a thermal diffusion treatment.
    Type: Grant
    Filed: April 26, 2014
    Date of Patent: June 4, 2019
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Youichi Machii, Masato Yoshida, Takeshi Nojiri, Kaoru Okaniwa, Mitsunori Iwamuro, Shuichiro Adachi
  • Patent number: 9608143
    Abstract: The composition for forming an n-type diffusion layer in accordance with the present invention contains a glass powder and a dispersion medium, in which the glass powder includes an donor element and a total amount of the life time killer element in the glass powder is 1000 ppm or less. An n-type diffusion layer and a photovoltaic cell having an n-type diffusion layer are prepared by applying the composition for forming an n-type diffusion layer, followed by a thermal diffusion treatment.
    Type: Grant
    Filed: November 10, 2013
    Date of Patent: March 28, 2017
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Youichi Machii, Masato Yoshida, Takeshi Nojiri, Kaoru Okaniwa, Mitsunori Iwamuro, Shuichiro Adachi, Tetsuya Sato, Keiko Kizawa
  • Patent number: 9520529
    Abstract: The composition for forming a composition for forming a p-type diffusion layer, the composition containing a glass powder and a dispersion medium, in which the glass powder includes an acceptor element and a total amount of a life time killer element in the glass powder is 1000 ppm or less. A p-type diffusion layer and a photovoltaic cell having a p-type diffusion layer are prepared by applying the composition for forming a p-type diffusion layer, followed by a thermal diffusion treatment.
    Type: Grant
    Filed: November 9, 2013
    Date of Patent: December 13, 2016
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Yoichi Machii, Masato Yoshida, Takeshi Nojiri, Kaoru Okaniwa, Mitsunori Iwamuro, Shuichiro Adachi, Tetsuya Sato, Keiko Kizawa
  • Publication number: 20160300971
    Abstract: Disclosed is a fluorescent material for converting wavelengths used in a light transmitting layer of a solar cell module, by mixing a fluorescent substance and a vinyl compound. Also, disclosed is a resin composition for converting wavelengths by polymerizing the vinyl compound of the fluorescent material for converting wavelengths and then mixing it with a transparent dispersion medium resin. Therefore, there can be provided a fluorescent material for converting wavelengths capable of converting a light that contributes less to solar energy generation in the incident solar radiation, to a wavelength that contributes significantly to energy generation, as well as utilizing the solar radiation efficiently and stably without deteriorating, a resin composition for converting wavelengths and methods for producing thereof.
    Type: Application
    Filed: June 21, 2016
    Publication date: October 13, 2016
    Applicant: HITACHI CHEMICAL COMPANY, LTD.
    Inventor: Kaoru OKANIWA
  • Publication number: 20160035925
    Abstract: A method for electrically connecting a surface electrode of a solar battery cell and a wiring member via a conductive adhesive film, wherein the conductive adhesive film contains an insulating adhesive and conductive particles, and wherein when the ten point height of roughness profile and maximum height of the surface of the surface electrode in contact with the conductive adhesive film are Rz (?m) and Ry (?m) respectively, the average particle diameter r (?m) of the conductive particles is equal to or greater than the ten point height of roughness profile Rz, and the thickness t (?m) of the conductive adhesive film is equal to or greater than the maximum height Ry.
    Type: Application
    Filed: July 30, 2015
    Publication date: February 4, 2016
    Inventors: Takehiro Shimizu, Kaoru Okaniwa, Naoki Fukushima
  • Patent number: 9173302
    Abstract: The conductive adhesive film of the invention is a conductive adhesive film for electrical connection between photovoltaic cell surface electrodes and wiring members, which comprises an insulating adhesive 2 and conductive particles 1 and has a (t/r) value in the range of 0.75-17.5, where r (?m) is the mean particle size of the conductive particles 1 and t (?m) is the thickness of the conductive adhesive film, wherein the content of the conductive particles 1 is 1.7-15.6 vol % based on the total volume of the conductive adhesive film.
    Type: Grant
    Filed: May 28, 2007
    Date of Patent: October 27, 2015
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Takehiro Shimizu, Kaoru Okaniwa, Naoki Fukushima
  • Patent number: 9123835
    Abstract: A method for electrically connecting a surface electrode of a solar battery cell and a wiring member via a conductive adhesive film, wherein the conductive adhesive film contains an insulating adhesive and conductive particles, and wherein when the ten point height of roughness profile and maximum height of the surface of the surface electrode in contact with the conductive adhesive film are Rz (?m) and Ry (?m) respectively, the average particle diameter r (?m) of the conductive particles is equal to or greater than the ten point height of roughness profile Rz, and the thickness t (?m) of the conductive adhesive film is equal to or greater than the maximum height Ry.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: September 1, 2015
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Takehiro Shimizu, Kaoru Okaniwa, Naoki Fukushima
  • Publication number: 20150214390
    Abstract: The composition for forming an n-type diffusion layer in accordance with the present invention contains a glass powder and a dispersion medium, in which the glass powder includes an donor element and a total amount of the life time killer element in the glass powder is 1000 ppm or less. An n-type diffusion layer and a photovoltaic cell having an n-type diffusion layer are prepared by applying the composition for forming an n-type diffusion layer, followed by a thermal diffusion treatment.
    Type: Application
    Filed: April 3, 2015
    Publication date: July 30, 2015
    Inventors: Yoichi MACHII, Masato YOSHIDA, Takeshi NOJIRI, Kaoru OKANIWA, Mitsunori IWAMURO, Shuichiro ADACHI, Tetsuya SATO, Keiko KIZAWA
  • Publication number: 20150214418
    Abstract: The composition for forming a composition for forming a p-type diffusion layer, the composition containing a glass powder and a dispersion medium, in which the glass powder includes an acceptor element and a total amount of a life time killer element in the glass powder is 1000 ppm or less. A p-type diffusion layer and a photovoltaic cell having a p-type diffusion layer are prepared by applying the composition for forming a p-type diffusion layer, followed by a thermal diffusion treatment.
    Type: Application
    Filed: April 3, 2015
    Publication date: July 30, 2015
    Inventors: Yoichi MACHII, Masato Yoshida, Takeshi Nojiri, Kaoru Okaniwa, Mitsunori Iwamuro, Shuichiro Adachi, Tetsuya Sato, Keiko Kizawa
  • Publication number: 20150047703
    Abstract: Inorganic phosphor-containing polymer particles that include an inorganic phosphor and a transparent material. The transparent material is preferably a vinyl resin that is a polymer of a vinyl compound. It is preferable that the vinyl compound includes 10% by mass or more of a vinyl compound having a viscosity (at 25° C.) of from 5 mPa·s to 30 mPa·s, or includes at least one of a compound having a structure represented by the following Formula (I-1) or the following Formula (I-2). In Formulae (I-1) and (1-2), each of R1 and R2 independently represents a hydrogen atom or an alkyl group. R1 and R2 may be linked to each other to form a ring. The inorganic phosphor is preferably surface-modified with a surface treatment agent, more preferably surface-modified with a coupling agent, still more preferably surface-modified with a silicone oligomer having a reactive substituent.
    Type: Application
    Filed: March 8, 2013
    Publication date: February 19, 2015
    Applicant: Hitachi Chemical Company, Ltd.
    Inventors: Taku Sawaki, Kaoru Okaniwa, Takeshi Yamashita
  • Patent number: 8860165
    Abstract: The present invention provides a wavelength conversion-type photovoltaic cell sealing material, the sealing material including at least one light emitting layer containing a group of spherical phosphors, the group of spherical phosphors having a ratio of a median value D50 of the group of spherical phosphors to a total thickness t of the light emitting layer of from 0.1 to 1.0, where the median value D50 is a median value of a volume particle size distribution of the group of spherical phosphors, and an integrated value N of a number particle size distribution from D25 to D75 of the group of spherical phosphors being 5% or more, when D25 is a particle size value at 25% of an integrated value of the volume particle size distribution of the group of spherical phosphors and D75 is a particle size value at 75% of the integrated value of the volume particle size distribution of the group of spherical phosphors; and a photovoltaic cell module including the sealing material.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: October 14, 2014
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Kaoru Okaniwa, Taku Sawaki, Takeshi Yamashita
  • Patent number: 8809102
    Abstract: A method of connecting solar battery cells, each provided with a front-face and a back-face electrode, comprises: preparing a wiring member including a strip-like conductive substrate and an adhesive layer provided on one face of the substrate, and bonding the adhesive layer on one end portion of the wiring member with the front-face electrode or the back-face electrode of one cell; turning an other end portion of the wiring member having completed the above preparation, around a central axis along a longitudinal direction so an adhesive layer surface of the other end portion is opposite in orientation to an adhesive layer surface of the one end portion; and then bonding the adhesive layer of the other end portion of the wiring member with an electrode of another solar battery cell having an opposite polarity to the electrode of the one cell previously bonded in the aforementioned preparation process.
    Type: Grant
    Filed: October 13, 2007
    Date of Patent: August 19, 2014
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Takehiro Shimizu, Kaoru Okaniwa, Naoki Fukushima
  • Publication number: 20140227821
    Abstract: The composition for forming a p-type diffusion layer in accordance with the present invention contains an acceptor element-containing glass powder and a dispersion medium. A p-type diffusion layer and a photovoltaic cell having a p-type diffusion layer are prepared by applying the composition for forming a p-type diffusion layer, followed by a thermal diffusion treatment.
    Type: Application
    Filed: April 26, 2014
    Publication date: August 14, 2014
    Applicant: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Youichi MACHII, Masato YOSHIDA, Takeshi NOJIRI, Kaoru OKANIWA, Mitsunori IWAMURO, Shuichiro ADACHI
  • Publication number: 20140120648
    Abstract: The composition for forming an n-type diffusion layer in accordance with the present invention contains a glass powder and a dispersion medium, in which the glass powder includes an donor element and a total amount of the life time killer element in the glass powder is 1000 ppm or less. An n-type diffusion layer and a photovoltaic cell having an n-type diffusion layer are prepared by applying the composition for forming an n-type diffusion layer, followed by a thermal diffusion treatment.
    Type: Application
    Filed: November 10, 2013
    Publication date: May 1, 2014
    Applicant: Hitachi Chemical Company, Ltd.
    Inventors: Yoichi MACHII, Masato YOSHIDA, Takeshi NOJIRI, Kaoru OKANIWA, Mitsunori IWAMURO, Shuichiro ADACHI, Tetsuya SATO, Keiko KIZAWA
  • Publication number: 20140060385
    Abstract: The composition for forming an n-type diffusion layer in accordance with the present invention contains a donor element-containing glass powder and a dispersion medium. An n-type diffusion layer and a photovoltaic cell having an n-type diffusion layer are prepared by applying the composition for forming an n-type diffusion layer, followed by a thermal diffusion treatment.
    Type: Application
    Filed: November 5, 2013
    Publication date: March 6, 2014
    Applicant: Hitachi Chemical Company, Ltd.
    Inventors: Youichi MACHII, Masato YOSHIDA, Takeshi NOJIRI, Kaoru OKANIWA, Mitsunori IWAMURO, Shuuichirou ADACHI, Takuya Aoyagi
  • Publication number: 20140065761
    Abstract: The composition for forming a composition for forming a p-type diffusion layer, the composition containing a glass powder and a dispersion medium, in which the glass powder includes an acceptor element and a total amount of a life time killer element in the glass powder is 1000 ppm or less. A p-type diffusion layer and a photovoltaic cell having a p-type diffusion layer are prepared by applying the composition for forming a p-type diffusion layer, followed by a thermal diffusion treatment.
    Type: Application
    Filed: November 9, 2013
    Publication date: March 6, 2014
    Applicant: Hitachi Chemical Company, Ltd.
    Inventors: Yoichi MACHII, Masato YOSHIDA, Takeshi NOJIRI, Kaoru OKANIWA, Mitsunori IWAMURO, Shuichiro ADACHI, Tetsuya SATO, Keiko KIZAWA
  • Publication number: 20130328149
    Abstract: The present invention provides a wavelength conversion-type photovoltaic cell sealing material, the sealing material including at least one light emitting layer containing a group of spherical phosphors, the group of spherical phosphors having a ratio of a median value D50 of the group of spherical phosphors to a total thickness t of the light emitting layer of from 0.1 to 1.0, where the median value D50 is a median value of a volume particle size distribution of the group of spherical phosphors, and an integrated value N of a number particle size distribution from D25 to D75 of the group of spherical phosphors being 5% or more, when D25 is a particle size value at 25% of an integrated value of the volume particle size distribution of the group of spherical phosphors and D75 is a particle size value at 75% of the integrated value of the volume particle size distribution of the group of spherical phosphors; and a photovoltaic cell module including the sealing material.
    Type: Application
    Filed: December 19, 2011
    Publication date: December 12, 2013
    Inventors: Kaoru Okaniwa, Taku Sawaki, Takeshi Yamashita
  • Publication number: 20130255778
    Abstract: A spherical phosphor includes a fluorescent substance having a maximum excitation wavelength of 400 nm or longer; and a transparent material containing the fluorescent substance, in which, in an excitation spectrum, an excitation spectral intensity in a wavelength region of from 340 nm to 380 nm is 50% or higher of an excitation spectral intensity at a maximum excitation wavelength. A wavelength conversion-type photovoltaic cell sealing material includes a light-permeable resin composition layer that contains the spherical phosphor and a sealing resin.
    Type: Application
    Filed: November 18, 2011
    Publication date: October 3, 2013
    Inventors: Kaoru Okaniwa, Takeshi Yamashita, Taku Sawaki
  • Publication number: 20130125985
    Abstract: A wavelength conversion type photovoltaic cell sealing material according to the present invention includes a first sealing layer that contains no fluorescent substance and a second sealing layer that contains a fluorescent substance. This wavelength conversion type photovoltaic cell sealing material is used as one of the light transmissive layers of a photovoltaic cell module and is disposed at a light receiving surface side of a solar cell.
    Type: Application
    Filed: May 24, 2011
    Publication date: May 23, 2013
    Inventors: Taku Sawaki, Kaoru Okaniwa, Takeshi Yamashita
  • Patent number: 8410000
    Abstract: The method for producing a photovoltaic cell includes applying, on a partial region of one surface side of a semiconductor substrate, a first p-type diffusion layer forming composition including a p-type impurity-containing glass powder and a dispersion medium; applying, on at least a region other than the partial region on the surface of the semiconductor substrate, a second p-type diffusion layer forming composition which includes a p-type impurity-containing glass powder and a dispersion medium and in which a concentration of the p-type impurity is lower than that of the first p-type diffusion layer forming composition, where the first p-type diffusion layer forming composition is applied; heat-treating the semiconductor substrate on which the first p-type diffusion layer forming composition and the second p-type diffusion layer forming composition are applied to form a p-type diffusion layer; and forming an electrode on the partial region.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: April 2, 2013
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Youichi Machii, Masato Yoshida, Takeshi Nojiri, Kaoru Okaniwa, Mitsunori Iwamuro, Shuuichirou Adachi, Akihiro Orita, Tetsuya Satou, Keiko Kizawa