Patents by Inventor Toshie Hiraoka

Toshie Hiraoka 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).

  • Publication number: 20100083687
    Abstract: The present invention is to realize supercooled freezing as a method of enhancing the quality of frozen food with a simple arrangement by a method other than quick freezing. Further, the present invention is to obtain a refrigerator and a frozen food preservation method capable of realizing high quality freezing by a simple arrangement. The refrigerator, which stores food making use of the cold air generated by a cooler 3, includes a supercooling case 81 for keeping the stored food in a supercooled state, in which the food is not frozen even at a temperature equal to or less than the freezing point of the food, for at least a predetermined period of time. The supercooling case 81 is composed of, for example, a lower case of two-stage type upper and lower cases disposed in a switching chamber 200 capable of being switched to a plurality of temperature zones.
    Type: Application
    Filed: December 5, 2007
    Publication date: April 8, 2010
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masumi Handa, Toshie Hiraoka, Isamu Hirashiki, Kiyoshi Yagita, Mariko Matsumoto, Katsumasa Sakamoto, Go Maeda, Kaori Ono, Hisao Isaka
  • Patent number: 6637235
    Abstract: A refrigerator which may allow vegetables kept more fresh by minimizing temperature fluctuations in a vegetable compartment. The refrigerator minimizes dehydration in food stored in the vegetable compartment, so that vegetables are kept fresh longer. The vegetable compartment is arranged so as to be surrounded by freezing temperatures, and cooled through radiation cooling without receiving blowing cool air thereto to minimize temperature fluctuations, so that vegetables may be keep more fresh. At the same time, the vegetable compartment is sealed so that convection does not occur thereby minimizing dehydration in food, so that food is allowed to be kept fresh longer. Furthermore, the refrigerator is provided with compartments whose temperatures may be set to freezing temperatures. The vegetable compartment is arranged so as to be surrounded by compartments whose temperatures are freezing temperatures via partition parts.
    Type: Grant
    Filed: April 2, 2002
    Date of Patent: October 28, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Katsumasa Sakamoto, Toshie Hiraoka, Keiji Ohya, Naho Misumi
  • Patent number: 6526766
    Abstract: A temperature controller is in a position at a height of 130 cm or more from a base surface settling, of which the refrigerator is settled, on a door of the refrigerator, which position is on an upper side of a handle for opening and closing the door. Further, a minute control depending on a preserving condition of foods, the seasons, a quantity of the foods, and so on is made possible.
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: March 4, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Toshie Hiraoka, Keiji Ohya
  • Publication number: 20030024254
    Abstract: An odorless refrigerator with a deodorizing function free from insufficient refrigeration, which is provided with a deodorizing device operable with a stable deodorizing performance for a long time, simply structured, small-sized, and provided at a low cost. The refrigerator includes a draft air duct as a passage of refrigerated air blown off forcibly by an inside fan to the compartments, a damper in the draft air duct and opens/closes to allow/prevent the supply of refrigerated air to the compartments, a bypass channel in the draft air duct between the damper and a cooling device for returning refrigerated air from the cooling device to the cooling device, and a deodorizing device in the by-pass channel for deodorizing refrigerated air supplied to the compartments. The refrigerated air inside the draft air duct between the damper and the cooling device is forcibly blown off through the bypass channel by closing the damper.
    Type: Application
    Filed: March 25, 2002
    Publication date: February 6, 2003
    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Junji Yoshida, Mutsumi Kato, Toshie Hiraoka, Keiji Ohya, Masao Araki
  • Publication number: 20030010056
    Abstract: A refrigerator which may allow vegetables kept more fresh by minimizing temperature fluctuations in a vegetable compartment. The refrigerator minimizes dehydration in food stored in the vegetable compartment, so that vegetables are kept fresh longer. The vegetable compartment is arranged so as to be surrounded by freezing temperatures, and cooled through radiation cooling without receiving blowing cool air thereto to minimize temperature fluctuations, so that vegetables may be keep more fresh. At the same time, the vegetable compartment is sealed so that convection does not occur thereby minimizing dehydration in food, so that food is allowed to be kept fresh longer. Furthermore, the refrigerator is provided with compartments whose temperatures may be set to freezing temperatures. The vegetable compartment is arranged so as to be surrounded by compartments whose temperatures are freezing temperatures via partition parts.
    Type: Application
    Filed: April 2, 2002
    Publication date: January 16, 2003
    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Katsumasa Sakamoto, Toshie Hiraoka, Keiji Ohya, Naho Misumi
  • Patent number: 6405547
    Abstract: A temperature controller is in a position at a height of 130 cm or more from a base surface settling, of which the refrigerator is settled, on a door of the refrigerator, which position is on an upper side of a handle for opening and closing the door. Further, a minute control depending on a preserving condition of foods, the seasons, a quantity of the foods, and so on is made possible.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: June 18, 2002
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Toshie Hiraoka, Keiji Ohya
  • Patent number: 6405544
    Abstract: A temperature controller is in a position at a height of 130 cm or more from a base surface settling, of which the refrigerator is settled, on a door of the refrigerator, which position is on an upper side of a handle for opening and closing the door. Further, a minute control depending on a preserving condition of foods, the seasons, a quantity of the foods, and so on is made possible.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: June 18, 2002
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Toshie Hiraoka, Keiji Ohya
  • Patent number: 6401481
    Abstract: A temperature controller is in a position at a height of 130 cm or more from a base surface settling, of which the refrigerator is settled, on a door of the refrigerator, which position is on an upper side of a handle for opening and closing the door. Further, a minute control depending on a preserving condition of foods, the seasons, a quantity of the foods, and so on is made possible.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: June 11, 2002
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Toshie Hiraoka, Keiji Ohya
  • Publication number: 20020017103
    Abstract: A temperature controller is in a position at a height of 130 cm or more from a base surface settling, of which the refrigerator is settled, on a door of the refrigerator, which position is on an upper side of a handle for opening and closing the door. Further, a minute control depending on a preserving condition of foods, the seasons, a quantity of the foods, and so on is made possible.
    Type: Application
    Filed: September 20, 2001
    Publication date: February 14, 2002
    Applicant: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Toshie Hiraoka, Keiji Ohya
  • Publication number: 20020014082
    Abstract: A temperature controller is in a position at a height of 130 cm or more from a base surface settling, of which the refrigerator is settled, on a door of the refrigerator, which position is on an upper side of a handle for opening and closing the door. Further, a minute control depending on a preserving condition of foods, the seasons, a quantity of the foods, and so on is made possible.
    Type: Application
    Filed: September 20, 2001
    Publication date: February 7, 2002
    Applicant: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Toshie Hiraoka, Keiji Ohya
  • Publication number: 20020011072
    Abstract: A temperature controller is in a position at a height of 130 cm or more from a base surface settling, of which the refrigerator is settled, on a door of the refrigerator, which position is on an upper side of a handle for opening and closing the door. Further, a minute control depending on a preserving condition of foods, the seasons, a quantity of the foods, and so on is made possible.
    Type: Application
    Filed: September 20, 2001
    Publication date: January 31, 2002
    Applicant: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Toshie Hiraoka, Keiji Ohya
  • Patent number: 6314746
    Abstract: A refrigerator includes a new temperature zone of freezer compartment as a compartment having a new temperature zone not higher than a lower limit of a maximum ice forming temperature zone and higher than a freezing temperature zone. The new temperature zone may be added as one of selective temperature zones for a switchable compartment which can be switchable so as to have a refrigerating compartment temperature zone, an icing temperature zone, a vegetable compartment temperature zone and a freezer compartment temperature zone.
    Type: Grant
    Filed: July 12, 1999
    Date of Patent: November 13, 2001
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Keiji Ohya, Toshie Hiraoka, Yuki Nagai
  • Publication number: 20010009100
    Abstract: A refrigerator includes a new temperature zone of freezer compartment as a compartment having a new temperature zone not higher than a lower limit of a maximum ice forming temperature zone and higher than a freezing temperature zone. The new temperature zone may be added as one of selective temperature zones for a switchable compartment which can be switchable so as to have a refrigerating compartment temperature zone, an icing temperature zone, a vegetable compartment temperature zone and a freezer compartment temperature zone.
    Type: Application
    Filed: July 12, 1999
    Publication date: July 26, 2001
    Inventors: KEIJI OHYA, TOSHIE HIRAOKA, YUKI NAGAI
  • Patent number: 6055826
    Abstract: A refrigerator having a main body; a refrigerating compartment arranged at an upper position in the main body to refrigerate foods; and at least three lower compartments vertically arranged under the refrigerating compartment; wherein at least one of the lower compartments is a freezer compartment for freezing foods, and one of the remaining lower compartments is a vegetable compartment to store vegetables or a switchable compartment to make a temperature zone therein switchable between a freezing temperature zone and a temperature zone for refrigerated foods, vegetables or chilled foods.
    Type: Grant
    Filed: September 23, 1998
    Date of Patent: May 2, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Toshie Hiraoka, Isao Naito, Noriyuki Suda, Mutsumi Kato, Hisashi Matsui, Hiroshige Konishi, Katsumasa Sakamoto
  • Patent number: 5983654
    Abstract: In a freezer-equipped refrigerator, a refrigerating chamber or freezing chamber is divided into a plurality of sections having substantially same temperature zone. A temperature element is provided in each section, and an open/close damper and a duct for supplying cool wind for each section are also provided. In such a structure, control is made on whether or not cool wind should be supplied or not in accordance with a detected temperature.
    Type: Grant
    Filed: May 22, 1997
    Date of Patent: November 16, 1999
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kazu Yamamoto, Toshie Hiraoka, Mutsumi Kato, Katsumasa Sakamoto, Kunihiko Yagi
  • Patent number: 5527459
    Abstract: A microbe propagation preventing apparatus is provided to prevent an ion from decreasing at a time of decomposing ozone generated by gaseous discharge or ionization so as to sufficiently generate air ion, and to sufficiently prevent propagation of microbes adhering to an object by using the air ion without secondary pollution. Further, in the apparatus, a gas containing the ion is supplied into water so as to prevent the microbe propagation in the water. In the apparatus, an ozone decomposing chamber is mounted to be electrically insulated from an air duct. An electrode to remove a positive ion is mounted to obtain only a negative ion, and extend a lifetime of the obtained ion. An ion supplying portion is mounted to supply an ionized gas into a space housing the object in which microbes can be propagated, and return the ionized gas to an ionization chamber. Further, a diffusing apparatus is provided to transform the ionic gas into bubbles so as to feed the bubbles into the water in the water reservoir.
    Type: Grant
    Filed: September 22, 1994
    Date of Patent: June 18, 1996
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Akira Ikeda, Yasuhiro Tanimura, Naoki Nakatsugawa, Masaaki Tanaka, Hiroshige Konishi, Toshie Hiraoka, Shinji Nishio, Hiroto Kawahira
  • Patent number: 5484570
    Abstract: A microbe propagation preventing apparatus and a microbe propagation preventing method are provided to prevent anion from decreasing at a time of decomposing ozone generated by gaseous discharge or ionization so as to sufficiently generate air ion, and to sufficiently prevent propagation of microbes adhering to an object by using the air ion without secondary pollution. Further, in the apparatus and the method, a gas containing the ion is supplied into water so as to prevent the microbe propagation in the water. In the apparatus, an ozone decomposing chamber is mounted to be electrically insulated from an air duct. An electrode to remove a positive ion is mounted to obtain only a negative ion, and extend a lifetime of the obtained ion. An ion supplying portion is mounted to supply an ionized gas into a space housing the object in which microbes can be propagated, and return the ionized gas to an ionization chamber.
    Type: Grant
    Filed: September 22, 1994
    Date of Patent: January 16, 1996
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Akira Ikeda, Yasuhiro Tanimura, Naoki Nakatsugawa, Masaaki Tanaka, Hiroshige Konishi, Toshie Hiraoka, Shinji Nishio, Hiroto Kawahira
  • Patent number: 5445798
    Abstract: A microbe propagation preventing apparatus and a microbe propagation preventing method are provided to prevent an ion from decreasing at a time of decomposing ozone generated by gaseous discharge or ionization so as to sufficiently generate air ion, and to sufficiently prevent propagation of microbes adhering to an object by using the air ion without secondary pollution. Further, in the apparatus and the method, a gas containing the ion is supplied into water so as to prevent the microbe propagation in the water. In the apparatus, an ozone decomposing chamber is mounted to be electrically insulated from an air duct. An electrode to remove a positive ion is mounted to obtain only a negative ion, and extend a lifetime of the obtained ion. An ion supplying portion is mounted to supply an ionized gas into a space housing the object in which microbes can be propagated, and return the ionized gas to an ionization chamber.
    Type: Grant
    Filed: November 22, 1993
    Date of Patent: August 29, 1995
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Akira Ikeda, Yasuhiro Tanimura, Naoki Nakatsugawa, Masaaki Tanaka, Hiroshige Konishi, Toshie Hiraoka, Shinji Nishio, Hiroto Kawahira