Patents by Inventor Akira Eguchi

Akira Eguchi 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: 20150147696
    Abstract: Provided is a method for producing a polymer compound that has very low contents of impurities such as metal components and exhibits excellent storage stability. The production method gives such a polymer compound. The polymer compound is incorporated into a photoresist resin composition. The method for producing a polymer compound includes the step of filtering a resin solution containing a polymer compound through a filter. The filter is approximately devoid of strongly acidic cation-exchange groups and develops a positive zeta potential. The polymer compound includes a monomer unit (a) and a monomer unit (b). The monomer unit (a) includes at least one monomer units represented by Formulae (a1) to (a3). The monomer unit (b) contains a group capable of releasing a moiety thereof by the action of an acid to develop solubility in an alkali.
    Type: Application
    Filed: July 26, 2013
    Publication date: May 28, 2015
    Applicant: DAICEL CORPORATION
    Inventors: Akira Eguchi, Masamichi Nishimura
  • Patent number: 9014506
    Abstract: An image processing method is configured to denoise three-dimensional image data. The image processing method includes an image transform step of performing a frequency transform for the three-dimensional image data in the optical axis direction and of calculating three-dimensional transformed image data, an image modulation step of reducing an absolute value of the three-dimensional transformed image data in a specific frequency region and of calculating three-dimensional modulated image data, and an inverse image transform step of performing an inverse frequency transform corresponding to the frequency transform for the three-dimensional modulated image data in the optical axis direction and of calculating three-dimensional inversely transformed image data. The specific frequency region is a part of a predetermined.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: April 21, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akira Eguchi
  • Publication number: 20150085360
    Abstract: A confocal microscope includes an illumination optical system configured to uniformly illuminate at least part of a first confocal stop with a light beam from a light source, a first collection optical system configured to collect a light beam passing through the first confocal stop onto a specimen, a second collection optical system configured to collect a light beam from the specimen onto a second confocal stop, a detection unit configured to detect a light beam passing through the second confocal stop, and a light intensity control member provided to at least one of the first collection optical system and the second collection optical system and having a transmittance of a first region including an optical axis that is lower than a transmittance of a second region around the first region.
    Type: Application
    Filed: September 18, 2014
    Publication date: March 26, 2015
    Inventor: Akira Eguchi
  • Publication number: 20150062325
    Abstract: An image estimating method is configured to utilize image data of an object captured at N different positions zj that are spaced from each other at an interval ?z in an optical axis direction, and to estimate image data at a position z in the optical axis direction. N is an integer of 2 or larger. The image estimating method includes the steps of an image converting step of performing a frequency conversion for N pieces of image data in the optical axis direction, and of calculating N pieces of converted image data, and a coupling step of multiplying the N pieces of converted image data by a complex number determined for the N pieces of converted image data based upon z and ?z, and of summing up multiplied results.
    Type: Application
    Filed: May 15, 2013
    Publication date: March 5, 2015
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Akira Eguchi
  • Patent number: 8753793
    Abstract: Disclosed is a method for producing a resin solution for photoresists, which includes the steps of heating and thereby aging a solution at 30° C. to 90° C. for 30 minutes or longer, the solution containing, in a solvent, a photoresist resin capable of being alkali-soluble by the action of an acid; and filtering the aged solution through a filter medium having a pore size of 1 ?m or less. The method gives a photoresist composition having good filterability which enables uniform patterning. The method also gives a resin solution for photoresists which is stable over a long time, namely, a resin solution for photoresists which maintains good filterability even after long-term storage.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: June 17, 2014
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Akira Eguchi, Masamichi Nishimura
  • Publication number: 20140126806
    Abstract: An image processing method is configured to denoise three-dimensional image data. The image processing method includes an image transform step of performing a frequency transform for the three-dimensional image data in the optical axis direction and of calculating three-dimensional transformed image data, an image modulation step of reducing an absolute value of the three-dimensional transformed image data in a specific frequency region and of calculating three-dimensional modulated image data, and an inverse image transform step of performing an inverse frequency transform corresponding to the frequency transform for the three-dimensional modulated image data in the optical axis direction and of calculating three-dimensional inversely transformed image data. The specific frequency region is a part of a predetermined.
    Type: Application
    Filed: November 4, 2013
    Publication date: May 8, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Akira EGUCHI
  • Patent number: 8637623
    Abstract: Disclosed is a monomer having an electron-withdrawing substituent and a lactone skeleton, represented by Formula (1), wherein Ra represents, e.g., hydrogen or an alkyl group having 1 to 6 carbons; R1 represents, e.g., a halogen or an alkyl or haloalkyl group having 1 to 6 carbons; “A” represents an alkylene group having 1 to 6 carbons, oxygen, sulfur, or is nonbonding; “m” denotes an integer of 0 to 8; Xs each represent an electron-withdrawing substituent; “n” denotes an integer of 1 to 9; and Y represents a bivalent organic group having 1 to 6 carbons. The monomer is useful as a monomer component typically for a highly functional polymer, because, when the monomer is applied to a resist resin, the resin is stable and resistant to chemicals, is highly soluble in organic solvents, and has improved hydrolyzability and/or solubility in water after hydrolysis.
    Type: Grant
    Filed: February 3, 2009
    Date of Patent: January 28, 2014
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Hiroshi Koyama, Kyuhei Kitao, Akira Eguchi
  • Publication number: 20130329034
    Abstract: A defocus amount estimation method for an imaging apparatus that captures, using an image sensor, an image of a specimen formed by an imaging optical system includes a captured image evaluation step of fixing the specimen using a transparent member including a mark that applies at least one of a phase variation and an amplitude change to transmitted light, to acquire a captured image containing an image of the specimen and an image of the mark, and an estimation step of estimating a defocus amount based on the captured image.
    Type: Application
    Filed: June 4, 2013
    Publication date: December 12, 2013
    Inventors: Akira Eguchi, Yoshinari Higaki
  • Patent number: 8361874
    Abstract: A polysilicon film to be a resistor element is formed on a resistor element formation region of a semiconductor substrate while a polysilicon gate and high concentration impurity regions are formed on a transistor formation region. Thereafter, an insulating film is formed on the entire surface of the semiconductor substrate. Then, a photoresist film is formed to cover the transistor formation region, and a conductive impurity is ion-implanted into the polysilicon film. Next, the photoresist film is removed by ashing.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: January 29, 2013
    Assignee: Fujitsu Semiconductor Limited
    Inventor: Akira Eguchi
  • Publication number: 20110287594
    Abstract: A polysilicon film to be a resistor element is formed on a resistor element formation region of a semiconductor substrate while a polysilicon gate and high concentration impurity regions are formed on a transistor formation region. Thereafter, an insulating film is formed on the entire surface of the semiconductor substrate. Then, a photoresist film is formed to cover the transistor formation region, and a conductive impurity is ion-implanted into the polysilicon film. Next, the photoresist film is removed by asking.
    Type: Application
    Filed: March 28, 2011
    Publication date: November 24, 2011
    Applicant: FUJITSU SEMICONDUCTOR LIMITED
    Inventor: Akira Eguchi
  • Publication number: 20110244394
    Abstract: Disclosed is a method for producing a resin solution for photoresists, which includes the steps of heating and thereby aging a solution at 30° C. to 90° C. for 30 minutes or longer, the solution containing, in a solvent, a photoresist resin capable of being alkali-soluble by the action of an acid; and filtering the aged solution through a filter medium having a pore size of 1 ?m or less. The method gives a photoresist composition having good filterability which enables uniform patterning. The method also gives a resin solution for photoresists which is stable over a long time, namely, a resin solution for photoresists which maintains good filterability even after long-term storage.
    Type: Application
    Filed: January 15, 2009
    Publication date: October 6, 2011
    Applicant: Daicel Chemical Industries, Ltd.
    Inventors: Akira Eguchi, Masamichi Nishimura
  • Publication number: 20100297555
    Abstract: Disclosed is a monomer having an electron-withdrawing substituent and a lactone skeleton, represented by following Formula (1), wherein Ra represents, e.g., a hydrogen atom or an alkyl group having 1 to 6 carbon atoms; R1 represents, e.g., a halogen atom or an alkyl or haloalkyl group having 1 to 6 carbon atoms; “A” represents an alkylene group having 1 to 6 carbon atoms, oxygen atom, sulfur atom, or nonbonding; “m” denotes an integer of 0 to 8; Xs each represent an electron-withdrawing substituent; “n” denotes an integer of 1 to 9; and Y represents a bivalent organic group having 1 to 6 carbon atoms. The monomer is useful typically as a monomer component typically for a highly functional polymer, because, when the monomer is applied typically to a resist resin, the resin is satisfactory stable and resistant typically to chemicals, is highly soluble in organic solvents, and has improved hydrolyzability and/or solubility in water after hydrolysis.
    Type: Application
    Filed: February 3, 2009
    Publication date: November 25, 2010
    Inventors: Hiroshi Koyama, Kyuhei Kitao, Akira Eguchi