Patents by Inventor Tomokazu Shimizu

Tomokazu Shimizu 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: 20190142450
    Abstract: A probe configured to be connected to a transducer unit configured to generate ultrasonic vibration, includes an elongated vibration transmission portion configured to transmit the ultrasonic vibration; and an engagement member provided on and/or near an outer circumference at a position which becomes a node of the ultrasonic vibration when the ultrasonic vibration is transmitted to the vibration transmission portion, the engagement member being formed by a material of an identical to or smaller damping rate than a damping rate of the ultrasonic vibration in the vibration transmission portion, and the engagement member being engaged with an exterior member disposed on an outer side of the vibration transmission portion.
    Type: Application
    Filed: January 10, 2019
    Publication date: May 16, 2019
    Applicant: OLYMPUS CORPORATION
    Inventors: Yukihiko SHIMAMURA, Masashi YAMADA, Hideyuki KOMAMURA, Tomokazu SHIMIZU
  • Publication number: 20190105741
    Abstract: A joining method of joining two pieces of subjects to be joined together, the subjects being a first member and a second member that has a joint insertion portion in which the first member is inserted, the method including: heating the second member that is set in an expansion restricting member and in which the first member is inserted to the joint insertion portion to first temperature to cause the second member to have thermal expansion and thereby causing the joint insertion portion to have plastic deformation in a direction in which a diameter shrinks with mechanically restricting thermal expansion of the second member by an inner surface of the expansion restricting member; and cooling the second member after the heating to join the first member and the second member together.
    Type: Application
    Filed: December 7, 2018
    Publication date: April 11, 2019
    Applicant: OLYMPUS CORPORATION
    Inventor: Tomokazu SHIMIZU
  • Patent number: 6673415
    Abstract: A honeycomb core material which is excellent in flame retardation, thermal insulation and noise insulation and has improved transportability and handling efficiency and which can be suitably used also for a sandwich structure of a curved shape as a foam has flexibility and elasticity, and a method for its production. A composite foam comprising a phosphoric acid type inorganic foam and a urethane type organic foam, obtained by foaming and curing an aqueous mixture containing a phosphorus-containing acid material, a curing agent, a blowing agent and a urethane polymer having NCO groups, is filled in cells of a honeycomb body having a cell size of from 3 to 100 mm and a porosity of from 92 to 99.5% according to JIS-A6931.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: January 6, 2004
    Assignees: Sanyo Chemical Industries, Ltd., Asahi Fiber Glass Company, Limited
    Inventors: Kaoru Yamazaki, Yasushi Kumagai, Tomokazu Shimizu, Akira Inoue, Masamichi Taguchi, Kengo Ozaki
  • Patent number: 6610756
    Abstract: An inorganic/organic composite foam that has a foam structure obtained from a combination of a phosphoric acid compound and/or a sulfuric acid compound with a blowing agent therefor, has reduced brittleness due to a cured material of an urethane prepolymer having NCO groups, and contains a powdery boric acid compound, and a process for producing the same. The foam is not only reduced in brittleness but also improved in foam strength after combustion due to the incorporation of the powdery boric acid compound while retaining inherent foam properties and inherent low quantities of heat of combustion and smoking in combustion. It is used in exterior wall panels, heat insulating materials, sound insulating materials, fireproof covering materials, lightweight aggregates, filling materials for cavities, and the like, which are required to have fire-proofing performance.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: August 26, 2003
    Assignee: Sanyo Checmical Industries, Ltd.
    Inventors: Tomokazu Shimizu, Tadaaki Yamazaki, Shinzo Kaida, Tsuyoshi Tomosada
  • Patent number: 6313186
    Abstract: A inorganic-organic composite foam having a structure comprising phosphoric acids and a blowing agent for phosphoric acids, wherein the brittleness is improved by urethane prepolymer having NCO groups. The foam is produced by foaming and curing by mixing each component of phosphoric acids, a blowing agent for phosphoric acids, urethane prepolymer having NCO groups, water, and, if necessary, an inorganic filler. A foam of phosphoric acids is inherently brittle, but the brittleness is improved, and flexibility and rebound resilience can be provided. The foam of the present invention is effectively used for the applications, for example, heat insulating materials of external panel or internal panel which require the fire preventive property of train, automobile, housing, building etc.
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: November 6, 2001
    Assignees: Sanyo Chemical Industries, Ltd., Sekisui House, Ltd.
    Inventors: Shinzou Kaida, Tomokazu Shimizu, Misao Okamoto