Patents by Inventor Tateki Ozawa

Tateki Ozawa 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: 6495109
    Abstract: An ozone supplying apparatus comprising an ozone generator for generating ozonized oxygen from raw material oxygen, an adsorption/desorption device for adsorbing and storing ozone from ozonized oxygen and desorbing the ozone, and an ozone desorbing means for desorbing the adsorbed and stored ozone for supply, the apparatus being arranged to return oxygen to the ozone generator after desorbing ozone therefrom by the adsorption/desorption device, and to desorb and supply ozone from the adsorption/desorption device, wherein the adsorption/desorption device includes a plurality ozone storing portions filled with an adsorbent, and a liquid storing portion for filling a temperature medium to an outer peripheral surface of the ozone storing portion.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: December 17, 2002
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yasuhiro Tanimura, Junji Hirotsuji, Shigeki Nakayama, Hisao Amitani, Hiroshi Yuge, Tateki Ozawa
  • Patent number: 6315962
    Abstract: An ozone producing apparatus includes an ozone generator for generating ozonized oxygen, an adsorption/desorption tower for adsorbing and storing ozone from the ozonized oxygen, and an ozone desorbing device for desorbing adsorbed and stored ozone for supply, wherein the apparatus further includes an oxygen gas supply tank for supplying oxygen to the adsorption/desorption tower at the time that desorption is started and an oxygen gas flow rate adjusting valve for adjusting flow rate of the oxygen gas to, be supplied. Ozone injection can be made definite, and the apparatus is economical in the aspect of both initial and running costs. It presents great effects of preventing slime adhesion and can also limit generation of oxidants even when applied to sea water.
    Type: Grant
    Filed: July 8, 1998
    Date of Patent: November 13, 2001
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yasuhiro Tanimura, Junji Hirotsuji, Shigeki Nakayama, Hisao Amitani, Hiroshi Yuge, Tateki Ozawa
  • Patent number: 6228331
    Abstract: An ozone supplying apparatus comprising an ozone generator for generating ozonized oxygen from raw material oxygen, an adsorption/desorption device for adsorbing and storing ozone from ozonized oxygen and desorbing the ozone, and an ozone desorbing means for desorbing the adsorbed and stored ozone for supply, the apparatus being arranged to return oxygen to the ozone generator after desorbing ozone therefrom by the adsorption/desorption device, and to desorb and supply ozone from the adsorption/desorption device, wherein the adsorption/desorption device includes at least one ozone storing portion filled with an adsorbent, and a liquid storing portion for filling a temperature medium to an outer peripheral surface of the ozone storing portion.
    Type: Grant
    Filed: July 8, 1998
    Date of Patent: May 8, 2001
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yasuhiro Tanimura, Junji Hirotsuji, Shigeki Nakayama, Hisao Amitani, Hiroshi Yuge, Tateki Ozawa
  • Patent number: 6214298
    Abstract: An ozone producing apparatus comprising an ozone generator for generating ozonized oxygen, an adsorption/desorption tower for adsorbing and storing ozone from the ozonized oxygen generated by the ozone generator, and an ozone desorbing means for desorbing the adsorbed and stored ozone for supply, wherein a reducer storage for storing reducer therein is connected to the adsorption/desorption tower through a switch valve which is opened when the ozone producing apparatus is under an abnormal driving condition. Desorbed ozone can be safely treated even in the case of power failure or an abnormal driving condition in which high pressure or high temperature exists in the adsorption/desorption tower.
    Type: Grant
    Filed: July 8, 1998
    Date of Patent: April 10, 2001
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yasuhiro Tanimura, Junji Hirotsuji, Shigeki Nakayama, Hisao Amitani, Hiroshi Yuge, Tateki Ozawa
  • Patent number: 6093289
    Abstract: There is provided a highly efficient and compact ozone generating apparatus in which a very short air gap of about 0.2 mm is formed at high accuracy. Non-discharge portions are dispersed and disposed to cover an entire discharge space, or a spacer is provided to form the non-discharge portion. Further, an elastic body is mounted on a back face of an electrode, thereby enhancing an air gap accuracy of the discharge space.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: July 25, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masaki Kuzumoto, Youichiro Tabata, Shigenori Yagi, Kenji Yoshizawa, Masahiro Mukai, Junji Ochi, Tateki Ozawa
  • Patent number: 6086772
    Abstract: A method for preventing biofouling in a cooling water system wherein ozone of high density is intermittently injected into a circulating line of a cooling water system in which cooling water is made to circulate in a closed system which includes a cooling tower and a heat exchanger. There is further disclosed an apparatus for preventing biofouling in a cooling water system, comprising an ozone generator for producing ozone, an ozone reservoir for temporarily storing the produced ozone, and an ozone injector for injecting the stored ozone into a circulating line of a cooling water system. Biofouling can be economically and reliably prevented.
    Type: Grant
    Filed: July 8, 1998
    Date of Patent: July 11, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yasuhiro Tanimura, Junji Hirotsuji, Shigeki Nakayama, Hisao Amitani, Hiroshi Yuge, Tateki Ozawa
  • Patent number: 6083464
    Abstract: An ozone supplying apparatus comprising an ozone generator, an adsorption/desorption device for adsorbing and storing ozone from ozonized oxygen, and an ozone desorbing means, the apparatus being arranged to return oxygen to the ozone generator after desorbing ozone therefrom to desorb ozone from the adsorption/desorption device and to perform treatment of an object by mixing the ozone with fluid. The apparatus further includes a fluid storing means for storing fluid after being injected with ozone and a fluid treating means for treating the fluid after treatment of the object.
    Type: Grant
    Filed: July 8, 1998
    Date of Patent: July 4, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yasuhiro Tanimura, Junji Hirotsuji, Shigeki Nakayama, Hisao Amitani, Hiroshi Yuge, Tateki Ozawa
  • Patent number: 6054102
    Abstract: An ozone producing apparatus comprising an ozone generator, an adsorption/desorption tower, and an ozone desorbing means for desorbing adsorbed and stored ozone for supply, wherein the apparatus further includes an ozone density measuring means, and a control circuit for adjusting an amount of electric power for the ozone generator by comparing the measured value detected by the measuring means with a set value. A specified amount of ozone can be desorbed and treated in a stable manner in a just sufficient amount also in a case in which characteristics of the adsorbent or the ozone generator, temperature or degree of pollution of the water, multiplication speed of microorganisms or reaction speed of ozone should happen to be changed, so that adhesion of slime can be prevented in a stable manner over a long period.
    Type: Grant
    Filed: July 8, 1998
    Date of Patent: April 25, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yasuhiro Tanimura, Junji Hirotsuji, Shigeki Nakayama, Hisao Amitani, Hiroshi Yuge, Tateki Ozawa
  • Patent number: 5948374
    Abstract: There is provided a highly efficient and compact ozone generating apparatus in which a very short air gap of about 0.2 mm is formed at high accuracy. Non-discharge portions are dispersed and disposed to cover an entire discharge space, or a spacer is provided to form the non-discharge portion. Further, an elastic body is mounted on a back face of an electrode, thereby enhancing an air gap accuracy of the discharge space.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: September 7, 1999
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masaki Kuzumoto, Youichiro Tabata, Shigenori Yagi, Kenji Yoshizawa, Masahiro Mukai, Junji Ochi, Tateki Ozawa
  • Patent number: 5759497
    Abstract: There is provided a highly efficient and compact ozone generating apparatus in which a very short air gap of about 0.2 mm is formed at high accuracy. Non-discharge portions are dispersed and disposed to cover an entire discharge space, or a spacer is provided to form the non-discharge portion. Further, an elastic body is mounted on a back face of an electrode, thereby enhancing an air gap accuracy of the discharge space.
    Type: Grant
    Filed: April 17, 1995
    Date of Patent: June 2, 1998
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masaki Kuzumoto, Youichiro Tabata, Shigenori Yagi, Kenji Yoshizawa, Masahiro Mukai, Junji Ochi, Tateki Ozawa
  • Patent number: 5076209
    Abstract: A breeding apparatus comprising a breeding water tank, an ozonizing device, an activated carbon device and a breeding water circulating device wherein breeding water of sea water or a mixture of sea water and plain water is circulated in series in these devices, and the ozonizing device is located at the upstream side of the activated carbon device with respect to the flow of the breeding water.
    Type: Grant
    Filed: November 8, 1990
    Date of Patent: December 31, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Toshiaki Kobayashi, Hatsuo Yotsumoto, Tateki Ozawa, Toshihiko Sasaki, Shigeki Nakayama
  • Patent number: 4647540
    Abstract: An automatic observation system for observing objects such as microorganisms contained in a liquid supplied from a container. A sample of the water is fixed between two glass plates, one of which is movable relative to the other by a plunger. A condensor lens is also carried by the plunger. Light from a continuous-output illuminating source is applied through the condensor lens via an optical fiber.
    Type: Grant
    Filed: May 21, 1985
    Date of Patent: March 3, 1987
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tateki Ozawa, Hatsuo Yotsumoto, Tetsu Takeyama