Patents by Inventor Satoru Ise

Satoru Ise 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).

  • Optical fiber and optical transmission line
    Patent number: 7085463
    Abstract: An optical fiber has a zero dispersion wavelength in a wavelength range of 1350 to 1410 nanometers; a dispersion of 2 to 8 ps/nm/km at a wavelength of 1550 nanometers; a dispersion slope of a positive value and not more than 0.05 ps/nm2/km at a wavelength of 1550 nanometers; a transmission loss of not more than 0.4 dB/km at a wavelength of 1380 nanometers; an increase of transmission loss of not more than 0.04 dB/km at a wavelength of 1380 nanometers after a hydrogen aging test; a transmission loss of not more than 0.25 dB/km at a wavelength of 1550 nanometers; and a bending loss of not more than 30 dB/m when the optical fiber is wound at a diameter of 20 millimeters at a wavelength of 1550 nanometers.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: August 1, 2006
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Fumio Takahashi, Kazunori Mukasa, Naomi Kumano, Satoru Ise
  • Optical fiber for WDM system and manufacturing method thereof
    Patent number: 7079736
    Abstract: An optical fiber having a length of one kilometer or more with average transmission loss at a wavelength of 1383 nm being less than average transmission loss at a wavelength of 1310 nm, wherein a maximum value of a transmission loss at the wavelength of 1383 nm of any one kilometer section along the entire length of the optical fiber does not exceed the average transmission loss at the wavelength of 1383 nm along the entire length of the optical fiber by 0.03 dB/km or more.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: July 18, 2006
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Fumio Takahashi, Hideya Moridaira, Masahide Kuwabara, Yoshinori Ishida, Satoru Ise
  • Optical fiber and optical transmission line
    Publication number: 20040170366
    Abstract: An optical fiber has a zero dispersion wavelength in a wavelength range of 1350 to 1410 nanometers; a dispersion of 2 to 8 ps/nm/km at a wavelength of 1550 nanometers; a dispersion slope of a positive value and not more than 0.05 ps/nm2/km at a wavelength of 1550 nanometers; a transmission loss of not more than 0.4 dB/km at a wavelength of 1380 nanometers; an increase of transmission loss of not more than 0.04 dB/km at a wavelength of 1380 nanometers after a hydrogen aging test; a transmission loss of not more than 0.25 dB/km at a wavelength of 1550 nanometers; and a bending loss of not more than 30 dB/m when the optical fiber is wound at a diameter of 20 millimeters at a wavelength of 1550 nanometers.
    Type: Application
    Filed: December 18, 2003
    Publication date: September 2, 2004
    Applicant: THE FURUKAWA ELECTRIC CO., LTD.
    Inventors: Fumio Takahashi, Kazunori Mukasa, Naomi Kumano, Satoru Ise
  • Optical fiber for WDM system and manufacturing method thereof
    Publication number: 20040136668
    Abstract: An optical fiber having a length of 1 km or more with average transmission loss in a wavelength band of 1383 nm being less than average transmission loss in a wavelength band of 1310 nm, wherein a maximum value of any 1 km section loss in the wavelength band of 1383 nm does not exceed the average transmission loss by 0.03 dB/km or more.
    Type: Application
    Filed: June 30, 2003
    Publication date: July 15, 2004
    Applicant: The Furukawa Electric Co., Ltd.
    Inventors: Fumio Takahashi, Hideya Moridaira, Masahide Kuwabara, Yoshinori Ishida, Satoru Ise, Masato Oku