Patents by Inventor Chikashige Kiyoshi

Chikashige Kiyoshi 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).

  • Pressure relief valve for cardiopulmonary bypass
    Patent number: 10052430
    Abstract: A pressure relieve valve for cardio pulmonary bypass responsive to abnormal pressure changes due to kinks in conduits used with the valve. In this situation, a principal flow path through a duckbill valve can be bypassed by positive and negative secondary flow paths for pressure relief. The secondary flow paths exist using umbrella valves of opposite orientation blocking holes in a flange separating inlet and outlet extensions of a tubular central body housing the duckbill valve. Each umbrella valve is throttled with a nipple that moderates flow in each of the secondary flow paths for slowing pressure equalization.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: August 21, 2018
    Assignee: AMT PTE. LTD.
    Inventors: Martin Kok Soon Wong, Pheng Meng Tan, Chikashige Kiyoshi
  • PRESSURE RELIEF VALVE FOR CARDIOPULMONARY BYPASS
    Publication number: 20170100532
    Abstract: A pressure relieve valve for cardio pulmonary bypass responsive to abnormal pressure changes due to kinks in conduits used with the valve. In this situation, a principal flow path through a duckbill valve can be bypassed by positive and negative secondary flow paths for pressure relief. The secondary flow paths exist using umbrella valves of opposite orientation blocking holes in a flange separating inlet and outlet extensions of a tubular central body housing the duckbill valve. Each umbrella valve is throttled with a nipple that moderates flow in each of the secondary flow paths for slowing pressure equalization.
    Type: Application
    Filed: October 9, 2015
    Publication date: April 13, 2017
    Applicant: Aurum Medicare PTE LTD
    Inventors: Martin Kok Soon Wong, Pheng Meng Tan, Chikashige Kiyoshi