Patents by Inventor Soichiro Okubo

Soichiro Okubo 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).

  • Faraday Rotator, Optical Isolator, Polarizer, and Diamond-Like Carbon Thin Film
    Publication number: 20050018327
    Abstract: New material useful in miniature, low-cost Faraday rotators, polarizers (analyzers) and magnetic substances; in Faraday rotators and optical isolators that can handle a plurality of wavelengths; and in miniaturizing, and reducing the cost and enhancing the performance of, optical isolators and various optical devices. Optical isolator (60b) as one example is configured by rectilinearly arranging a wavelength-selective Faraday rotator (30), a polarizer (20) and an analyzers (40) formed from a DLC thin film, and a magnetic substance (50) that is transparent to light. Integrally forming these using thin-film lamination technology simplifies the fabrication procedure to enable manufacturing miniature, low-cost optical isolators.
    Type: Application
    Filed: September 7, 2004
    Publication date: January 27, 2005
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Soichiro Okubo, Takashi Matsuura
  • Faraday rotator, optical isolator, polarizer, and diamond-like carbon thin film
    Patent number: 6813076
    Abstract: New material useful in miniature, low-cost Faraday rotators, polarizers (analyzers) and magnetic substances; in Faraday rotators and optical isolators that can handle a plurality of wavelengths; and in miniaturizing, and reducing the cost and enhancing the performance of, optical isolators and various optical devices. Optical isolator (60b) as one example is configured by rectilinearly arranging a wavelength-selective Faraday rotator (30), a polarizer (20) and an analyzers (40) formed from a DLC thin film, and a magnetic substance (50) that is transparent to light. Integrally forming these using thin-film lamination technology simplifies the fabrication procedure to enable manufacturing miniature, low-cost optical isolators.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: November 2, 2004
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Soichiro Okubo, Takashi Matsuura
  • Faraday rotator, optical isolator, polarizer, and diamond-like carbon thin film
    Publication number: 20030117706
    Abstract: New material useful in miniature, low-cost Faraday rotators, polarizers (analyzers) and magnetic substances; in Faraday rotators and optical isolators that can handle a plurality of wavelengths; and in miniaturizing, and reducing the cost and enhancing the performance of, optical isolators and various optical devices. Optical isolator (60b) as one example is configured by rectilinearly arranging a wavelength-selective Faraday rotator (30), a polarizer (20) and an analyzers (40) formed from a DLC thin film, and a magnetic substance (50) that is transparent to light. Integrally forming these using thin-film lamination technology simplifies the fabrication procedure to enable manufacturing miniature, low-cost optical isolators.
    Type: Application
    Filed: November 14, 2002
    Publication date: June 26, 2003
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Soichiro Okubo, Takashi Matsuura