Patents by Inventor Hisashi Nobukawa

Hisashi Nobukawa 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).

  • Patent number: 6953518
    Abstract: A specific ingredient-dissolved liquid condensing apparatus, comprising an upper tank, a lower tank provided under the upper tank, the upper tank being provided with a liquid-falling opening and a valve for falling a specific ingredient-dissolved liquid in the upper tank to the lower tank, a circulator for circulating the specific ingredient-dissolved liquid in the upper tank, and a transfer means for transferring the specific ingredient-dissolved liquid in the lower tank into the upper tank.
    Type: Grant
    Filed: June 6, 2001
    Date of Patent: October 11, 2005
    Assignee: Hiroshima University
    Inventor: Hisashi Nobukawa
  • Patent number: 6461502
    Abstract: An apparatus for recovering a specific ingredient in sea water, which comprises an adsorbing bed tank, a layer of an adsorbent charged on the bottom portion of the adsorbing bed tank, a sea water intake pipe provided in a bottom portion of the adsorbing bed tank, a sea water intake opening for taking in sea water and leading the sea water taken in to the sea water intake pipe, a communicating pipe communicating with an end of the sea water intake pipe, a precipitating section through which the communicating pipe communicates with the sea water intake opening, and an evacuator for discharging sea water inside the adsorbing bed tank, sea water inflow openings being provided between said sea water intake pipe and the tank and being provided with check valves, said check valve being adapted to only upwardly flow sea water into the adsorbent layer inside the adsorbing bed tank through the sea water inflow openings, wherein a sectional area of the precipitating section as taken perpendicularly to a flowing directio
    Type: Grant
    Filed: June 6, 2001
    Date of Patent: October 8, 2002
    Assignee: Hiroshima University
    Inventor: Hisashi Nobukawa
  • Publication number: 20020023867
    Abstract: A specific ingredient-dissolved liquid condensing apparatus, comprising an upper tank, a lower tank provided under the upper tank, the upper tank being provided with a liquid-falling opening and a valve for falling a specific ingredient-dissolved liquid in the upper tank to the lower tank, a circulator for circulating the specific ingredient-dissolved liquid in the upper tank, and a transfer means for transferring the specific ingredient-dissolved liquid in the lower tank into the upper tank.
    Type: Application
    Filed: June 6, 2001
    Publication date: February 28, 2002
    Inventor: Hisashi Nobukawa
  • Publication number: 20020023870
    Abstract: An apparatus for recovering a specific ingredient in sea water, which comprises an adsorbing bed tank, a layer of an adsorbent charged on the bottom portion of the adsorbing bed tank, a sea water intake pipe provided in a bottom portion of the adsorbing bed tank, a sea water intake opening for taking in sea water and leading the sea water taken in to the sea water intake pipe, a communicating pipe communicating with an end of the sea water intake pipe, a precipitating section through which the communicating pipe communicates with the sea water intake opening, and an evacuator for discharging sea water inside the adsorbing bed tank, sea water inflow openings being provided between said sea water intake pipe and the tank and being provided with check valves, said check valve being adapted to only upwardly flow sea water into the adsorbent layer inside the adsorbing bed tank through the sea water inflow openings, wherein a sectional area of the precipitating section as taken perpendicularly to a flowing directio
    Type: Application
    Filed: June 6, 2001
    Publication date: February 28, 2002
    Inventor: Hisashi Nobukawa