Patents Assigned to NGK Isulators, Ltd.
  • Ceramic honeycomb structure body and method of producing the same
    Publication number: 20070059483
    Abstract: A ceramic honeycomb structure body (1) including a configuration in which a plurality of porous honeycomb segments (2) are bound one another with an adhesive layer (3) interposed between each two neighboring porous honeycomb segments (2), where a plurality of protrusion portions (4) fixed to one of the adhesion surfaces (2a, 2b) respectively of two honeycomb segments (2, 2) opposed to each other with the adhesive layer (3) interposed between the two honeycomb segments (2, 2) are embedded into the adhesive layer (3).
    Type: Application
    Filed: January 14, 2004
    Publication date: March 15, 2007
    Applicant: NGK Isulators, Ltd.
    Inventors: Jun Fujita, Naoshi Masukawa, Takashi Harada
  • Semiconductor element
    Patent number: 7067847
    Abstract: On a substrate made of e.g., sapphire single crystal is formed an Al underlayer having FWHM X-ray rocking curve value of 90 seconds or below. A buffer layer is formed on the AlN underlayer and has a composition of AlpGaqIn1?p?qN (0?p?1, 0?y?q). A GaN-based semiconductor layer group is formed on the buffer layer.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: June 27, 2006
    Assignee: NGK Isulators, Ltd.
    Inventors: Tomohiko Shibata, Keiichiro Asai, Yukinori Nakamura, Mitsuhiro Tanaka