Patents by Inventor Ritaro OGUMA

Ritaro OGUMA 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).

  • Biological safety cabinet and clean bench
    Patent number: 10864514
    Abstract: A biological safety cabinet or the like according to an embodiment of the present disclosure includes: a bottom plate 4 provided in a body case 2; and a flexible portion 13 provided to a front shutter protector 6 that is provided to a lower end of the front shutter 5, and is capable of ensure reliability by reducing the load of the front shutter such that outside air is drawn into the body case 2 through a gap 15 formed in a contact portion between the flexible portion 13 and the bottom plate 4.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: December 15, 2020
    Assignee: PHC HOLDINGS CORPORATION
    Inventors: Ritaro Oguma, Shinji Sugimoto
  • BIOLOGICAL SAFETY CABINET AND CLEAN BENCH
    Publication number: 20180264459
    Abstract: A biological safety cabinet or the like according to an embodiment of the present disclosure includes: a bottom plate 4 provided in a body case 2; and a flexible portion provided to a front shutter protector 6 that is provided to a lower end of the front shutter 5, and is capable of ensure reliability by reducing the load of the front shutter such that outside air is drawn into the body case 2 through a gap 15 formed in a contact portion between the flexible portion 13 and the bottom plate 4.
    Type: Application
    Filed: May 17, 2018
    Publication date: September 20, 2018
    Inventors: Ritaro OGUMA, Shinji SUGIMOTO