Patents by Inventor Tomoko Fujii

Tomoko Fujii 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: 20220251714
    Abstract: The present invention provides: a composition with which the surface of a stainless steel is sufficiently roughened in an efficient manner with few steps; a method for roughening a stainless steel; and the like. The above are achieved by means of a composition for roughening the surface of a stainless steel, said composition containing from 0.1% by mass to 25% by mass of one or more substances that are selected from the group consisting of persulfuric acid and persulfuric acid salts based on the total amount of the composition, and from 1% by mass to 30% by mass of halide ions based on the total amount of the composition.
    Type: Application
    Filed: July 22, 2020
    Publication date: August 11, 2022
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kazuhiko IKEDA, Tomoko FUJII, Hiroshi MATSUNAGA, Satoshi TAMAI
  • Publication number: 20210381111
    Abstract: An aqueous solution for surface treatment, for treating a surface of an alloy, the aqueous solution comprising: a copper compound at a copper ion concentration of 20000 ppm or more and 50000 ppm or less; a heterocyclic nitrogen compound at a concentration of 200 ppm or more and 3000 ppm or less; and a halide ion at a concentration of 2000 ppm or more and 70000 ppm or less.
    Type: Application
    Filed: January 23, 2019
    Publication date: December 9, 2021
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Tomoko FUJII, Kazuhiko IKEDA
  • Publication number: 20210381113
    Abstract: The present invention relates to an etchant capable of selectively etching copper and a copper alloy while suppressing dissolution of nickel, tin, gold, and an alloy thereof. This etchant is characterized by comprising: (A) 5-10.5% by mass of hydrogen peroxide with respect to the total mass of the etchant; (B) 0.3-6% by mass of nitric acid with respect to the total mass of the etchant; (C) at least one nitrogen-containing 5-membered ring compound selected from the group consisting of triazoles and tetrazoles, which may have at least one substituent selected from the group consisting of a C1-6 alkyl group, an amino group, and a substituted amino group having a substituent selected from the group consisting of a C1-6 alkyl group and a phenyl group; and (D) (d1) one or more pH adjusters selected from the group consisting of an alkali metal hydroxide, ammonia, an amine, and an ammonium salt, (d2) a phosphonic acid compound, or (d3) a combination of (d1) and (d2).
    Type: Application
    Filed: November 19, 2019
    Publication date: December 9, 2021
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Shun FUKAZAWA, Tomoko FUJII, Hiroshi MATSUNAGA
  • Patent number: 6945078
    Abstract: When an optical waveguide is formed by focused femtosecond laser pulses in a pure silica glass to induce a refractive index increase region, a pulse width of femtosecond laser pulses are changed, a peak power of femtosecond laser pulses at the focal point is changed, or both the pulse width and the peak power are changed simultaneously. Under conditions where a pulse width of the femtosecond laser pulses is in a range of 210 to 420 fs and a peak power at the focal point is not greater than 8.7×1011 W/cm2, an optical waveguide having a mode field of 10 to 14 ?m such that an aspect ratio is 1 (one) can be obtained. By doing this, it is possible to control a mode field diameter of an optical waveguide and an aspect ratio of the mode field diameter.
    Type: Grant
    Filed: August 21, 2003
    Date of Patent: September 20, 2005
    Assignee: Fujikura Ltd.
    Inventors: Takeshi Fukuda, Shimon Ishikawa, Tomoko Fujii, Ken Sakuma, Hideyuki Hosoya
  • Publication number: 20040047578
    Abstract: When an optical waveguide is formed by focused femtosecond laser pulses in a pure silica glass to induce a refractive index increase region, a pulse width of femtosecond laser pulses are changed, a peak power of femtosecond laser pulses at the focal point is changed, or both the pulse width and the peak power are changed simultaneously. Under conditions where a pulse width of the femtosecond laser pulses is in a range of 210 to 420 fs and a peak power at the focal point is not greater than 8.7×1011 W/cm2, an optical waveguide having a mode field of 10 to 14 &mgr;m such that an aspect ratio is 1 (one) can be obtained. By doing this, it is possible to control a mode field diameter of an optical waveguide and an aspect ratio of the mode field diameter.
    Type: Application
    Filed: August 21, 2003
    Publication date: March 11, 2004
    Applicant: FUJIKURA LTD.
    Inventors: Takeshi Fukuda, Shimon Ishikawa, Tomoko Fujii, Ken Sakuma, Hideyuki Hosoya
  • Patent number: 6081310
    Abstract: A reflection-type liquid crystal display device includes a first substrate including a plurality of pixel electrodes arranged in a matrix and switching devices for driving the pixel electrodes. A second substrate includes a counter electrode, and a liquid crystal layer is interposed between the first substrate and the second substrate. The pixel electrodes each include a lower electrode layer and an upper electrode layer. The upper electrode layer is formed of either silver or a silver alloy and is reflective.
    Type: Grant
    Filed: November 4, 1998
    Date of Patent: June 27, 2000
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoko Katsuya, Yutaka Takafuji, Atsushi Iwakiri, Tomoko Fujii
  • Patent number: 5175268
    Abstract: Lymphotoxin (LT) mutein (genetically-altered LT) is disclosed that has the following amino acid sequence, or a portion of an active portion of said protein, where 10 to 21 amino acids of LT being deleted from N-terminus and which has Pro or Phe at the N-terminus: ##STR1## Wherein R.sub.1 is Pro or Phe, R.sub.2 is a peptide chain represented by the following sequence:Ala-Gln-Thr-Ala-Arg-Gln-His-Pro-Lys-Met-His-Leu,or a portion thereof and n is 0 or 1.The LT mutein can be recovered in a higher yield and purified more efficiently under mild conditions which does not harm the LT's biological activity, than the whole LT.
    Type: Grant
    Filed: October 3, 1989
    Date of Patent: December 29, 1992
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Susumu Iwasa, Tomoko Fujii, Ryuji Marumoto, Koichi Igarashi
  • Patent number: 4935352
    Abstract: An animal cell line transformed with an expression vector for an animal cell, the expression vector which contains a DNA segment comprising:(a) a DNA sequence coding for a signal peptide of an animal cell-derived protein,(b) a second DNA sequence coding for a different protein from the signal protein joined downstream of said signal peptide encoding DNA sequence without causing any reading frame shift, and(c) a promoter DNA sequence capable of functioning in an animal cell, wherein the promoter sequence is positioned upstream of the signal peptide encoding DNA sequence, can produce glycosylated proteins advantageously as secretable proteins.
    Type: Grant
    Filed: October 16, 1986
    Date of Patent: June 19, 1990
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Koichi Igarashi, Reiko Sasada, Tomoko Fujii, Ryuji Marumoto