Patents by Inventor Masami Kadowaki

Masami Kadowaki 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: 20230151275
    Abstract: A compound represented by Formula (1) or (11) below, X-A1-(N?N-A2)n-N?N-A3-Y??(1) (in Formula (1), -A1- and -A2- each independently represent an unsubstituted or substituted divalent group of an aromatic heterocyclic ring including one or more S atoms wherein atoms constituting the aromatic heterocyclic ring other than a carbon atom are not adjacent to one another, an unsubstituted or substituted divalent group of a benzisothiazole ring, or an unsubstituted or substituted divalent group of an aromatic hydrocarbon ring; -A3- represents an unsubstituted or substituted divalent group of an aromatic hydrocarbon ring; —X represents a branched alkyl, alkoxy, or alkylsulfanyl group having 3 or more carbon atoms; —Y represents a monovalent organic group; n represents 1, 2, or 3; when n is 2 or 3, a plurality of -A2-'s may be identical to or different from one another; and -A1- and -A2- do not represent an unsubstituted or substituted divalent group of an aromatic hydrocarbon ring at the same time), X-A41-(
    Type: Application
    Filed: January 19, 2023
    Publication date: May 18, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kei TAKESHITA, Yasushi SHIGA, Seiji AKIYAMA, Masami KADOWAKI, Terutsune OSAWA, Junichi OIZUMI, Yoshie TAKAMI, Souya KOJIMA
  • Patent number: 9328289
    Abstract: A liquid crystal element which comprises: a pair of substrates with electrodes, in which the substrates are arranged so as to face each other and at least one of the substrates is a transparent substrate; and a liquid crystal light adjusting layer which is disposed between the substrates and contains a composite containing a chiral nematic liquid crystal phase and a polymer resin phase, wherein the polymer resin phase contains a polymer compound having a specific repeating unit, and dielectric constant anisotropy of the chiral nematic liquid crystal phase is positive.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: May 3, 2016
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Masami Kadowaki, Noriyuki Kida
  • Publication number: 20150205149
    Abstract: An image display device is provided that can satisfy both transparency of a non-displaying portion and visibility of a projected image. The screen of and the image projector of the image display device are synchronized such that the image projector projects an image on a part of the screen or on the whole screen when the screen is in a light-scattering state, and projects no image when the screen is in a light-transmitting state. The screen is driven to periodically switch between a light-transmitting state and a light-scattering state at a switching frequency of 40 Hz to 100 Hz and a periodic switching duty ratio of 0.01 to 0.20.
    Type: Application
    Filed: March 27, 2015
    Publication date: July 23, 2015
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Noriyuki KIDA, Masami KADOWAKI
  • Patent number: 8999050
    Abstract: An object of the present invention is to provide an anthraquinone based dye having excellent solubility in a low polar solvent and having high absorption coefficient and high light resistance and an ink containing the same. The present invention relates to an ink comprising a specific anthraquinone based dye.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: April 7, 2015
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Mio Ishida, Yasushi Shiga, Utako Takeda, Masami Kadowaki
  • Publication number: 20140028965
    Abstract: A liquid crystal element which comprises: a pair of substrates with electrodes, in which the substrates are arranged so as to face each other and at least one of the substrates is a transparent substrate; and a liquid crystal light adjusting layer which is disposed between the substrates and contains a composite containing a chiral nematic liquid crystal phase and a polymer resin phase, wherein the polymer resin phase contains a polymer compound having a specific repeating unit, and dielectric constant anisotropy of the chiral nematic liquid crystal phase is positive.
    Type: Application
    Filed: September 30, 2013
    Publication date: January 30, 2014
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Masami KADOWAKI, Noriyuki Kida
  • Publication number: 20130241815
    Abstract: An object of the present invention is to provide an anthraquinone based dye having excellent solubility in a low polar solvent and having high absorption coefficient and high light resistance and an ink containing the same. The present invention relates to an ink comprising a specific anthraquinone based dye.
    Type: Application
    Filed: September 10, 2012
    Publication date: September 19, 2013
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Mio ISHIDA, Yasushi Shiga, Utako Takeda, Masami Kadowaki
  • Patent number: 7960521
    Abstract: To provide a dye capable of forming an anisotropic dye film showing high dichroism and having a high degree of molecular orientation, a composition containing the dye, an anisotropic dye film using the dye and a polarizing element. A trisazo dye, of which the free acid form is represented by the following formula (1), wherein at least one of B1 and D1 has at least one substituent as defined by the following Q1, a dye composition for an anisotropic dye film containing the dye, an anisotropic dye film and a polarizing element using the anisotropic dye film: Q1: an alkyl group or alkoxy group substituted by a hydrogen bond-forming group: wherein A1 is a phenyl group or a naphthyl group, each of B1 and D1 is a phenylene group or a naphthylene group, X1 is an amino group which may be substituted or a hydroxyl group, and m is 0 or 1.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: June 14, 2011
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Hideo Sano, Masami Kadowaki, Ryuichi Hasegawa, Wataru Shimizu
  • Publication number: 20100243970
    Abstract: Provided is a highly reliable resin black matrix, which has sufficient light-blocking characteristics, suppresses temperature increase due to heat generated by a TFT element and does not have failures of a TFT element substrate and fluctuation in liquid crystal drive. The maximum light transmittance of the resin black matrix in a wavelength range of 400 nm-700 nm is permitted to be 1% or less and the average light transmittance in a wavelength range of 850 nm-3,000 nm to be 60% or higher. Alternatively, the minimum light transmittance is permitted to be 50% or more.
    Type: Application
    Filed: August 20, 2008
    Publication date: September 30, 2010
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Eriko Toshimitsu, Takao Hirota, Masami Kadowaki
  • Publication number: 20090275742
    Abstract: It is to provide a dye for an anisotropic dye film to be formed by a wet system film-forming method, which is achromatic and has high dichroism and a high degree of molecular orientation, an anisotropic dye film containing the dye and a polarizing element employing the film. A dye for an anisotropic dye film to be formed by a wet system film-forming method, of which the free acid form is represented by the following formula (I), a composition for an anisotropic dye film containing the dye, an anisotropic dye film and a polarizing element employing the anisotropic dye film: wherein A11: a (substituted) phenyl group, a (substituted) naphthyl group or a (substituted) aromatic heterocyclic group; B11: a bivalent aromatic hydrocarbon group or aromatic hydrocyclic group; R11, R22: H, OH, a (substituted) alkyl group, a (substituted) phenyl group or a (substituted) acyl group; n?: 1 or 2; m: 0 or 1.
    Type: Application
    Filed: April 4, 2006
    Publication date: November 5, 2009
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hideo Sano, Tomio Yoneyama, Masaaki Nishimura, Wataru Shimizu, Ryuichi Hasegawa, Masami Kadowaki, Junichi Oizumi
  • Publication number: 20090267031
    Abstract: To provide a dye capable of forming an anisotropic dye film showing high dichroism and having a high degree of molecular orientation, a composition containing the dye, an anisotropic dye film using the dye and a polarizing element. A trisazo dye, of which the free acid form is represented by the following formula (1), wherein at least one of B1 and D1 has at least one substituent as defined by the following Q1, a dye composition for an anisotropic dye film containing the dye, an anisotropic dye film and a polarizing element using the anisotropic dye film: Q1: an alkyl group or alkoxy group substituted by a hydrogen bond-forming group: wherein A1 is a phenyl group or a naphthyl group, each of B1 and D1 is a phenylene group or a naphthylene group, X1 is an amino group which may be substituted or a hydroxyl group, and m is 0 or 1.
    Type: Application
    Filed: December 14, 2005
    Publication date: October 29, 2009
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Hideo Sano, Masami Kadowaki, Ryuichi Hasegawa, Wataru Shimizu
  • Publication number: 20090166583
    Abstract: An anisotropic dye film that exhibits a high dichroism and a high uniformity in a coating film is formed at a high level of productivity. In the composition for an anisotropic dye film containing a dye and being capable of forming a lyotropic liquid crystal phase, the time until the relaxation modulus G measured 0.01 seconds after the application of strain drops to 1/10 is equal to or shorter than 0.1 seconds at a temperature of 5° C. The composition contains a cation and a strongly acidic anion that respectively account for contents in the range of 0.9 to 0.99 equivalence and in the range of 0.02 to 0.1 equivalence relative to the content of the acidic groups of the dye. An anisotropic dye film is formed using this composition for an anisotropic dye film. A polarizing element is formed using this anisotropic dye film.
    Type: Application
    Filed: July 14, 2006
    Publication date: July 2, 2009
    Inventors: Ryuichi Hasegawa, Hideo Sano, Junichi Oizumi, Masami Kadowaki
  • Patent number: 7527862
    Abstract: An anisotropic dye film having high dichromatic properties is provided. An anisotropic dye film wherein the period d attributable to molecular stacking is at most 3.445 ?, and the column length L thereof is at least 105 ?. The anisotropic dye film preferably has a degree of orientation of the molecular stacking axes of at least 85% and a film thickness of at most 30 ?m, and is formed by a wet film-forming method. Since it has a molecular alignment suitable to develop a dichroic ratio, it provides high dichromatic properties. A polarizing element having this anisotropic dye film is excellent in heat resistance, light fastness and polarizing performance.
    Type: Grant
    Filed: April 14, 2006
    Date of Patent: May 5, 2009
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tomio Yoneyama, Ryuichi Hasegawa, Hideo Sano, Junichi Oizumi, Masaaki Nishimura, Masami Kadowaki
  • Publication number: 20090040609
    Abstract: The present invention provides an anisotropic dye film having a high dichroic ratio. For this reason, the present invention uses a composition for an anisotropic dye film containing an electron-deficient discotic compound and an electron-rich compound.
    Type: Application
    Filed: April 21, 2006
    Publication date: February 12, 2009
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Ryuichi Hasegawa, Masaaki Nishimura, Tomio Yoneyama, Hideo Sano, Wataru Shimizu, Masami Kadowaki, Kiyoshi Sugiyama
  • Publication number: 20090027774
    Abstract: A composition that has excellent storage stability and excellent film-forming properties for forming films without streaks or irregularities, an anisotropic dye film that is a uniform coating film free of streaks and irregularities and without deterioration in optical properties, and a polarizing element including the anisotropic dye film are provided. This composition includes a dichroic dye, an agent having at least one function selected from the group consisting of a fungicidal function, an antimicrobial function, and a bactericidal function, and a solvent. The anisotropic dye film and the polarizing element are formed of the composition.
    Type: Application
    Filed: March 1, 2006
    Publication date: January 29, 2009
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hideo Sano, Masami Kadowaki, Ryuichi Hasegawa
  • Publication number: 20080252824
    Abstract: An in-cell polarizer is provided which can achieve a liquid crystal device having excellent drive and display characteristics in an active drive system. A composition for the in-cell polarizer comprises a dye and a solvent and has an electric conductivity of 25 mS/cm or less.
    Type: Application
    Filed: March 24, 2006
    Publication date: October 16, 2008
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Masami Kadowaki, Tomio Yoneyama
  • Publication number: 20070287830
    Abstract: To provide a dye for an anisotropic dye film to be formed by a wet system film-forming method, which is black and which has a high degree of polarization and a high degree of molecular orientation an anisotropic dye film using the dye, and the like. A trisazo dye for an anisotropic dye film to be formed by a wet system film-forming method, of which the free acid form is represented by the following formula (1), a dye composition for an anisotropic dye film containing the dye, an anisotropic dye film, and a polarizing element using the anisotropic dye film: wherein A1 is a phenyl group or aromatic heterocyclic group which may have a substituent, B1 is an aromatic hydrocarbon group which may have a substituent, D1 is an aromatic hydrocarbon group or aromatic heterocyclic group which may have a substituent, R1 is a hydrogen atom, a hydroxyl group or an amino group which may have a substituent, and each of m and n is 0 or 1.
    Type: Application
    Filed: December 27, 2005
    Publication date: December 13, 2007
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Hideo Sano, Masami Kadowaki, Ryuichi Hasegawa, Tomio Yoneyama
  • Publication number: 20060230551
    Abstract: To provide a dye composition for an anisotropic dye film, capable of forming an anisotropic dye film which has good heat resistance, has little defects and shows high dichroism; an anisotropic dye film formed by using such a composition for an anisotropic dye film; and a polarizing element employing such an anisotropic dye film.
    Type: Application
    Filed: June 19, 2006
    Publication date: October 19, 2006
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Ryuichi Hasegawa, Junichi Oizumi, Masami Kadowaki, Tomio Yoneyama, Hideo Sano
  • Publication number: 20060182902
    Abstract: An anisotropic dye film having high dichromatic properties is provided. An anisotropic dye film wherein the period d attributable to molecular stacking is at most 3.445 ?, and the column length L thereof is at least 105 ?. The anisotropic dye film preferably has a degree of orientation of the molecular stacking axes of at least 85% and a film thickness of at most 30 ?m, and is formed by a wet film-forming method. Since it has a molecular alignment suitable to develop a dichroic ratio, it provides high dichromatic properties. A polarizing element having this anisotropic dye film is excellent in heat resistance, light fastness and polarizing performance.
    Type: Application
    Filed: April 14, 2006
    Publication date: August 17, 2006
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Tomio Yoneyama, Ryuichi Hasegawa, Hideo Sano, Junichi Oizumi, Masaaki Nishimura, Masami Kadowaki
  • Patent number: 6033598
    Abstract: The present invention provides a guest-host liquid-crystal composition comprising a host liquid-crystal composition containing one or more dichroic dyes, characterized in that the host liquid-crystal composition comprises as the main component a polycyclic compound having three or more rings and having no cyano group in the direction of the molecular axis, the proportion of the polycyclic compound component having three or more rings in the host liquid-crystal composition being 75% by mole or higher, and that the guest-host liquid-crystal composition has an order parameter (S value) of 0.76 or higher. The invention further provides a liquid-crystal display element employing the composition. This guest-host liquid-crystal composition shows excellent dichroism or a high order parameter.
    Type: Grant
    Filed: July 10, 1997
    Date of Patent: March 7, 2000
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Masaharu Kaneko, Masami Kadowaki, Hideki Sato
  • Patent number: 5866033
    Abstract: A guest host mode liquid crystal composition comprising dichroic dyes and host liquid crystal, wherein said dichroic dyes are at least one member selected from each of the following groups (A), (B) and (C):Group (A) consisting of azo dichroic dyes of the following formula (I): ##STR1## wherein each of R.sup.1 and R.sup.2 which are independent of each other, is a hydrogen atom, a C.sub.1-10 alkyl or alkoxy group, a C.sub.2-12 alkoxyalkyl group, a halogen atom, or a cyclohexyl, phenyl, benzyl or cyclohexylmethyl group which may have such an alkyl, alkoxy or alkoxyalkyl group or a halogen atom, as a substituent;Group (B) consisting of azo dichroic dyes of the following formula (II): ##STR2## wherein n is 0 or 1, R.sup.3 is R.sup.1 and each of R.sup.4 and R.sup.5 which are independent of each other, is a hydrogen atom, a C.sub.1-10 alkyl, alkoxy or halogenated alkyl group, a C.sub.2-12 alkoxyalkyl group, a halogen atom, or a benzyl or cyclohexylmethyl group which may be substituted as R.sup.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: February 2, 1999
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Masaharu Kaneko, Masami Kadowaki, Hideki Sato