Patents by Inventor Akio Karasawa

Akio Karasawa 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: 20020149914
    Abstract: A flexible substrate on which a large number of sorts of LCDs can be installed quickly and inexpensively. On loading on a video controller, a connector 21 is electrically connected to first and second contacts of the video controller. The connector 21 is wired so that, if a wiring 31-1 is cut-out and severed along with the end of the flexible printed wiring board 11, the first and second contacts of the video controller are not in electrically connected state.
    Type: Application
    Filed: June 3, 2002
    Publication date: October 17, 2002
    Inventors: Akio Karasawa, Shigemitsu Toda, Taketo Wako, Atsuyuki Takai
  • Patent number: 6366458
    Abstract: A docking unit for a portable electronic device with which it is possible to establish electrical connection of a portable electronic device surely and easily. A docking unit for electrically connecting a portable electronic device to external devices by having the portable electronic device set engage/disengageably thereon using a connector has a base part for supporting the portable electronic device, positioning means for positioning the portable electronic device in a predetermined position on the base part as the portable electronic device is moved over the base part, and operating means, having and engaging part for engaging with the portable electronic device means, for holding the positioned portable electronic device using the engaging part.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: April 2, 2002
    Assignee: Sony Corporation
    Inventors: Tatsuo Yoshida, Akio Karasawa
  • Patent number: 6306550
    Abstract: Dyes suitable for use in the fabrication of color filters are described which contain one or more photopolymerizable substituents preferably represented by the following formula: D—(A—Yn1)n2   (1) where D represents a chromphoric nucleus, A denotes a connecting group, Y means the photopolymerizable group, n1 is 1-10,000, and n2 stands for an integer of 1-10. Also described are photosensitive resist resin compositions containing the dyes as well as color filters fabricated by curing the photosensitive resist resin compositions.
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: October 23, 2001
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Hisato Itoh, Akio Karasawa, Kenichi Sugimoto
  • Patent number: 6080833
    Abstract: A low-birefringent organic optical component comprising a polymer prepared by polymerizing a racemic mixture of the monomer with an asymmetric spiro ring represented by general formula (1) as an essential ingredient; wherein ring A represents a monocyclic or polycyclic organic group, wherein two ring As are mutually bound each other via a spiro bond to form a spiro ring which has a molecular asymmetric structure; n is an integer of 0 to 10; X.sub.1 and Y.sub.1 are binding groups; and Z.sub.1 is a polymerization-active group. The component has excellent transparency, mechanical strength and heat resistance, as well as a low birefringence.
    Type: Grant
    Filed: July 17, 1997
    Date of Patent: June 27, 2000
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Atsuo Otsuji, Keisuke Takuma, Rihoko Suzuki, Tatsuhiro Urakami, Toshihiro Motoshima, Wataru Yamashita, Tomomi Yoshimura, Atsushi Shibuya, Yoshihiro Sakata, Hideaki Oikawa, Masahiro Ohta, Masanobu Ajioka, Masatoshi Takagi, Akio Karasawa
  • Patent number: 6051360
    Abstract: Dyestuffs represented by the below-described formula (1), that is, dyestuffs formed of a chromophoric nucleus and a bisphenol introduced therein have excellent solubility in solvents and binder resins, and can provide color filters having excellent transmittance characteristics and durability. ##STR1## wherein Dye represents a chromophoric nucleus, X represents a direct bond or a divalent connecting group, R.sup.1 to R.sup.10 and n are defined with the provision that one of R.sup.9 and R.sup.10 has 3 or more carbon atoms.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: April 18, 2000
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Akio Karasawa, Hisato Itoh
  • Patent number: 6040111
    Abstract: Disclosed are an aromatic hydroxycarboxylic acid resin represented by the following formula (1): ##STR1## wherein each A group is the same or different and individually represents a substituted or unsubstituted phenylene or naphthylene group, R.sup.1 represents a hydrogen atom or a C.sub.1-4 alkyl group, R.sup.2 represents a hydrogen atom or a C.sub.1-10 alkyl, C.sub.1-10 alkoxyl, nitro or hydroxyl group, l stands for an integer of 0-100, m stands for an integer of 0-20 and n stands for an integer of 0-3 with the proviso that m stands for an integer other than 0 when all of the A group represent an unsubstituted or substituted phenylene group, a preparation process thereof and use of the same.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: March 21, 2000
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Akio Karasawa, Akihiro Yamaguchi, Keizaburo Yamaguchi, Yuko Ishihara
  • Patent number: 5948597
    Abstract: Dyes suitable for use in the fabrication of color filters are described which contain one or more photopolymerizable substituents preferably represented by the following formula:D-(A-Yn.sup.1)n.sup.2 (1)where D represents a chromophoric nucleus, A denotes a connecting group, Y means the photopolymerizable group, .sub.n.sup.1 is 1-10,000, and .sub.n.sup.2 stands for an integer of 1-10. Also described are photosensitive resist resin compositions containing the dyes as well as color filters fabricated by curing the photosensitive resist resin compositions.
    Type: Grant
    Filed: June 1, 1998
    Date of Patent: September 7, 1999
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Hisato Itoh, Akio Karasawa, Kenichi Sugimoto
  • Patent number: 5798422
    Abstract: Disclosed are an aromatic hydroxycarboxylic acid resin represented by the following formula (1): ##STR1## wherein each A group is the same or different and individually represents a substituted or unsubstituted phenylene or naphthylene group, R.sup.1 represents a hydrogen atom or a C.sub.1-4 alkyl group, R.sup.2 represents a hydrogen atom or a C.sub.1-10 alkyl, C.sub.1-10 alkoxyl, nitro or hydroxyl group, l stands for an integer of 0-100, m stands for an integer of 0-20 and n stands for an integer of 0-3 with the proviso that m stands for an integer other than 0 when all of the A group represent an unsubstituted or substituted a group, a preparation process thereof and use of the same.
    Type: Grant
    Filed: August 7, 1995
    Date of Patent: August 25, 1998
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Akio Karasawa, Akihiro Yamaguchi, Keizaburo Yamaguchi, Yuko Ishihara
  • Patent number: 5789137
    Abstract: Dyes suitable for use in the fabrication of color filters are described which contain one or more photopolymerizable substituents preferably represented by the following formula:D--(A--Yn.sup.1)n.sup.2 (1)where D represents a chromphoric nucleus, A denotes a connecting group, Y means the photopolymerizable group, .sub.n.sup.1 is 1-10,000, and .sub.n.sup.2 stands for an integer of 1-10. Also described are photosensitive resist resin compositions containing the dyes as well as color filters fabricated by curing the photosensitive resist resin compositions.
    Type: Grant
    Filed: May 24, 1996
    Date of Patent: August 4, 1998
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Hisato Itoh, Akio Karasawa, Kenichi Sugimoto
  • Patent number: 5773172
    Abstract: Dyestuffs represented by the below-described formula (1), that is, dyestuffs formed of a chromophoric nucleus and a bisphenol introduced therein have excellent solubility in solvents and binder resins, and can provide color filters having excellent transmittance characteristics and durability. ##STR1## wherein Dye represents a chromophoric nucleus, X represents a direct bond or a divalent connecting group, R.sup.1 to R.sup.10 and n are defined with the provision that one of R.sup.9 and R.sup.10 has 3 or more carbon atoms.
    Type: Grant
    Filed: June 6, 1996
    Date of Patent: June 30, 1998
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Akio Karasawa, Hisato Itoh
  • Patent number: 5695911
    Abstract: Phthalocyanine compounds represented by the below-described formula are suitable for use in the fabrication of color filters. ##STR1## wherein R.sup.1, R.sup.4, R.sup.5, R.sup.8, R.sup.9, R.sup.12, R.sup.13 and R.sup.16 represent a group represented by the below-described formula, H or a halogen atom, R.sup.2, R.sup.3, R.sup.6, R.sup.7, R.sup.10, R.sup.11, R.sup.14 and R.sup.15 represent an alkyl, alkoxyl, alkylthio, alkylamino, dialkylamino or aryloxyl, arylthio group or --COOR.sup.17, R.sup.17 being a particular monovalent group, H or a halogen atom; and Met represents a metal atom. ##STR2## wherein X and Z represent O or S, R.sup.18, R.sup.19 and R.sup.20 represent H or an alkyl group, A, B and D represent a connecting group, n and l is an integer of 0-10, m, q, t, u, r and w are an integer of 0-2, and p is 0 or 1.
    Type: Grant
    Filed: November 17, 1995
    Date of Patent: December 9, 1997
    Assignees: Mitsui Toatsu Chemicals, Incorporated, Yamamoto Chemicals, Incorporated
    Inventors: Hisato Itoh, Akio Karasawa, Kenichi Sugimoto, Takahisa Oguchi, Shin Aihara
  • Patent number: 5677398
    Abstract: Disclosed are an epoxy acrylate resin of the general formula (1) ##STR1## and an acid-modified epoxy acrylate resin obtained by reacting the epoxy acrylate resin with a carboxylic acid or an anhydride thereof, as well as curable resin compositions containing such a resin and the cured products thereof.
    Type: Grant
    Filed: April 3, 1996
    Date of Patent: October 14, 1997
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Toshihiro Motoshima, Akio Karasawa, Keisuke Takuma, Akihiro Yamaguchi
  • Patent number: 5631377
    Abstract: This invention relates to a novel polyimide or polyimide copolymer having excellent heat resistance and greatly improved processability, and has a novel aromatic diamino compound used for the polyimide, a preparation process thereof, a polyimide-based resin composition comprising the polyimide or polyimide copolymer and a fibrous reinforcement, a process for preparing the resin composition, an injection molded article of the resin composition.The polyimide comprise a requisite structural unit having one or more recurring structural units of the formula: ##STR1## wherein L is an oxygen atom, carbonyl, isopropylidene or hexafluoroisopropylidene, and X is ##STR2## , and Ar is a tetravalent radical having 6 to 27 carbon atoms and being selected from the group consisting of a monoaromatic radical, condensed polyaromatic radical and noncondensed polyaromatic radical having aromatic radicals connected to each other with a direct bond or a bridge member.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: May 20, 1997
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Mitsunori Matsuo, Tsutomu Ishida, Akio Karasawa, Keizaburo Yamaguchi, Akihiro Yamaguchi
  • Patent number: 5578419
    Abstract: Dyes suitable for use in the fabrication of color filters are described which contain one or more photopolymerizable substituents preferably represented by the following formula:D-(A-Yn.sup.1)n.sup.2 (1)where D represents a chromphoric nucleus, A denotes a connecting group, Y means the photopolymerizable group, n.sup.1 is 1-10,000, and n.sup.2 stands for an integer of 1-10. Also described are photosensitive resist resin compositions containing the dyes as well as color filters fabricated by curing the photosensitive resist resin compositions.
    Type: Grant
    Filed: April 6, 1994
    Date of Patent: November 26, 1996
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Hisato Itoh, Akio Karasawa, Kenichi Sugimoto
  • Patent number: 5482804
    Abstract: A photo-setting resin composition is here disclosed which comprises a photo-setting resin precursor and a dyestuff for uniformly coloring the photo-cured resin; and there is also disclosed a method for preparing a color filter by the use of this photo-setting resin composition.
    Type: Grant
    Filed: March 30, 1993
    Date of Patent: January 9, 1996
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Hisato Itoh, Akio Karasawa, Kenichi Sugimoto
  • Patent number: 5380842
    Abstract: Phthalocyanine compounds represented by the below-described formula are suitable for use in the fabrication of color filters. ##STR1## wherein R.sup.1, R.sup.4, R.sup.5, R.sup.8, R.sup.9, R.sup.12, R.sup.13 and R.sup.16 represent a group represented by the below-described formula, H or a halogen atom, R.sup.2, R.sup.3, R.sup.6, R.sup.7, R.sup.10, R.sup.11, R.sup.14 and R.sup.15 represent an alkyl, alkoxyl, alkylthio, alkylamino, dialkylamino or aryloxyl, arylthio group or --COOR.sup.17, R.sup.17 being a particular monovalent group, H or a halogen atom; and Met represents a metal atom. ##STR2## wherein X and Z represent O or S, R.sup.18, R.sup.19 and R.sup.20 represent H or an alkyl group, A, B and D represent a connecting group, n and l is an integer of 0-10, m, q, t, u, r and w are an integer of 0-2, and p is 0 or 1.
    Type: Grant
    Filed: June 22, 1992
    Date of Patent: January 10, 1995
    Assignees: Mitsui Toatsu Chemicals, Incorporated, Yamamoto Chemicals, Incorporated
    Inventors: Hisato Itoh, Akio Karasawa, Kenichi Sugimoto, Takahisa Oguchi, Shin Aihara
  • Patent number: 5034016
    Abstract: Dyed denim cotton yarns capable of meeting the market demand for color jeans can be provided by immersing denim cotton yarns in a dye bath containing a dye or dye composition comprising a specific indirubin derivative(s), a specific quinophthalone derivative(s) and/or an indigo dye, squeezing and air-oxidizing the dyed yarns, and repeating a series of these steps.
    Type: Grant
    Filed: May 24, 1989
    Date of Patent: July 23, 1991
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Hitoshi Koshida, Tetsuo Sakagawa, Takayuki Nakayama, Hiroshi Suwa, Masao Imai, Akio Karasawa