Patents by Inventor Harumi IWATA

Harumi IWATA 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).

  • Self resonance-type sound-producing speaker and method of placing thereof
    Patent number: 8807267
    Abstract: A self resonance-type sound-producing speaker that is waterproof and readily attachable. The self resonance-type sound-producing speaker includes an actuator speaker unit and a polymer foam arranged to cover the entire outer surface of this speaker unit and converts the vibrations from the speaker unit into plane waves to externally produce sound. The polymer foam preferably has the expansion ratio of 10 to 30 times and the closed pore structure. The thickness of the polymer foam is preferably not less than 2 mm and is more preferably not less than 3 mm.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: August 19, 2014
    Assignee: C-Eng Co., Ltd.
    Inventors: Harumi Iwata, Keiko Takaoka
  • SELF RESONANCE-TYPE SOUND-PRODUCING SPEAKER AND METHOD OF PLACING THEREOF
    Publication number: 20130228392
    Abstract: A self resonance-type sound-producing speaker that is waterproof and readily attachable. The self resonance-type sound-producing speaker includes an actuator speaker unit and a polymer foam arranged to cover the entire outer surface of this speaker unit and converts the vibrations from the speaker unit into plane waves to externally produce sound. The polymer foam preferably has the expansion ratio of 10 to 30 times and the closed pore structure. The thickness of the polymer foam is preferably not less than 2 mm and is more preferably not less than 3 mm.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 5, 2013
    Applicant: C-ENG CO., LTD.
    Inventors: Harumi IWATA, Keiko TAKAOKA