Patents by Inventor Takaaki Nagano

Takaaki Nagano 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 manufacture method, preform manufacture method, and preform manufacture apparatus
    Patent number: 6848276
    Abstract: A method for manufacturing an optical fiber comprises setting a heating condition for heating a glass rod, which is a parent material of the optical fiber, and an elongating speed of the glass rod based on a prescribed numerical value which changes with a progress of elongation of the glass rod; heating and elongating the glass rod to generate a preform based on the heating condition and the elongating speed which are set by the setting; and drawing the preform to a filament-like form by further heating the preform to generate the optical fiber.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: February 1, 2005
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yoshiaki Shimizu, Takaaki Nagano, Tadakatsu Shimada, Hideo Hirasawa, Masataka Watanabe, Kazuhisa Hatayama, Mitsukuni Sakashita, Minoru Taya, Waichi Yamamura, Shinji Suzuki, Jiro Moriya
  • Method of making an optical fiber preform where a second elongation is based on a mark on a glass rod
    Patent number: 6779362
    Abstract: A method for manufacturing an optical fiber comprises setting a heating condition for heating a glass rod, which is a parent material of the optical fiber, and an elongating speed of the glass rod based on a prescribed numerical value which changes with a progress of elongation of the glass rod; heating and elongating the glass rod to generate a preform based on the heating condition and the elongating speed which are set by the setting; and drawing the preform to a filament-like form by further heating the preform to generate the optical fiber.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: August 24, 2004
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yoshiaki Shimizu, Takaaki Nagano, Tadakatsu Shimada, Hideo Hirasawa, Masataka Watanabe, Kazuhisa Hatayama, Mitsukuni Sakashita, Minoru Taya, Waichi Yamamura, Shinji Suzuki, Jiro Moriya
  • Optical fiber manufacture method, preform manufacture method, and preform manufacture apparatus
    Publication number: 20020152772
    Abstract: A method for manufacturing an optical fiber comprises setting a heating condition for heating a glass rod, which is a parent material of the optical fiber, and an elongating speed of the glass rod based on a prescribed numerical value which changes with a progress of elongation of the glass rod; heating and elongating the glass rod to generate a preform based on the heating condition and the elongating speed which are set by the setting; and drawing the preform to a filament-like form by further heating the preform to generate the optical fiber.
    Type: Application
    Filed: June 3, 2002
    Publication date: October 24, 2002
    Inventors: Yoshiaki Shimizu, Takaaki Nagano, Tadakatsu Shimada, Hideo Hirasawa, Masataka Watanabe, Kazuhisa Hatayama, Mitsukuni Sakashita, Minoru Taya, Waichi Yamamura, Shinji Suzuki, Jiro Moriya
  • Optical fiber manufacture method, preform manufacture method, and preform manufacture apparatus
    Publication number: 20020148257
    Abstract: A method for manufacturing an optical fiber comprises setting a heating condition for heating a glass rod, which is a parent material of the optical fiber, and an elongating speed of the glass rod based on a prescribed numerical value which changes with a progress of elongation of the glass rod; heating and elongating the glass rod to generate a preform based on the heating condition and the elongating speed which are set by the setting; and drawing the preform to a filament-like form by further heating the preform to generate the optical fiber.
    Type: Application
    Filed: June 3, 2002
    Publication date: October 17, 2002
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yoshiaki Shimizu, Takaaki Nagano, Tadakatsu Shimada, Hideo Hirasawa, Masataka Watanabe, Kazuhisa Hatayama, Mitsukuni Sakashita, Minoru Taya, Waichi Yamamura, Shinji Suzuki, Jiro Moriya
  • Optical fiber manufacture method, preform manufacture method, and preform manufacture apparatus
    Publication number: 20020144520
    Abstract: A method for manufacturing an optical fiber comprises setting a heating condition for heating a glass rod, which is a parent material of the optical fiber, and an elongating speed of the glass rod based on a prescribed numerical value which changes with a progress of elongation of the glass rod; heating and elongating the glass rod to generate a preform based on the heating condition and the elongating speed which are set by the setting; and drawing the preform to a filament-like form by further heating the preform to generate the optical fiber.
    Type: Application
    Filed: June 3, 2002
    Publication date: October 10, 2002
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yoshiaki Shimizu, Takaaki Nagano, Tadakatsu Shimada, Hideo Hirasawa, Masataka Watanabe, Kazuhisa Hatayama, Mitsukuni Sakashita, Minoru Taya, Waichi Yamamura, Shinji Suzuki, Jiro Moriya
  • Optical fiber manufacture method, preform manufacture method, and preform manufacture apparatus
    Publication number: 20020139148
    Abstract: A method for manufacturing an optical fiber comprises setting a heating condition for heating a glass rod, which is a parent material of the optical fiber, and an elongating speed of the glass rod based on a prescribed numerical value which changes with a progress of elongation of the glass rod; heating and elongating the glass rod to generate a preform based on the heating condition and the elongating speed which are set by the setting; and drawing the preform to a filament-like form by further heating the preform to generate the optical fiber.
    Type: Application
    Filed: June 3, 2002
    Publication date: October 3, 2002
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yoshiaki Shimizu, Takaaki Nagano, Tadakatsu Shimada, Hideo Hirasawa, Masataka Watanabe, Kazuhisa Hatayama, Mitsukuni Sakashita, Minoru Taya, Waichi Yamamura, Shinji Suzuki, Jiro Moriya
  • Optical fiber manufacture method, preform manufacture method, and preform manufacture apparatus
    Publication number: 20020139149
    Abstract: A method for manufacturing an optical fiber comprises setting a heating condition for heating a glass rod, which is a parent material of the optical fiber, and an elongating speed of the glass rod based on a prescribed numerical value which changes with a progress of elongation of the glass rod; heating and elongating the glass rod to generate a preform based on the heating condition and the elongating speed which are set by the setting; and drawing the preform to a filament-like form by further heating the preform to generate the optical fiber.
    Type: Application
    Filed: June 3, 2002
    Publication date: October 3, 2002
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yoshiaki Shimizu, Takaaki Nagano, Tadakatsu Shimada, Hideo Hirasawa, Masataka Watanabe, Kazuhisa Hatayama, Mitsukuni Sakashita, Minoru Taya, Waichi Yamamura, Shinji Suzuki, Jiro Moriya
  • Optical fiber manufacture method including elongating a preform in a vertical direction and a horizontal direction
    Patent number: 6386001
    Abstract: A method for manufacturing an optical fiber comprises setting a heating condition for heating a glass rod, which is a parent material of the optical fiber, and an elongating speed of the glass rod based on a prescribed numerical value which changes with a progress of elongation of the glass rod; heating and elongating the glass rod to generate a preform based on the heating condition and the elongating speed which are set by the setting; and drawing the preform to a filament-like form by further heating the preform to generate the optical fiber.
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: May 14, 2002
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yoshiaki Shimizu, Takaaki Nagano, Tadakatsu Shimada, Hideo Hirasawa, Masataka Watanabe, Kazuhisa Hatayama, Mitsukuni Sakashita, Minoru Taya, Waichi Yamamura, Shinji Suzuki, Jiro Moriya