Patents by Inventor Keiji Ohya

Keiji Ohya 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: 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
  • Publication number: 20030046947
    Abstract: A fridge-freezer equipped with a deodorizing unit which has a filter including photocatalyst and a light emitting unit including an LED as a light source mounted on a substrate. The fridge-freezer is designed to solve problems posed by conventional fridge-freezers. One of the problems is that in the case of using a glass-tube type lamp such as a black light or a cold cathode tube as the light source, the light source becomes large in size which requires a large space for installation. This does not allow the deodorizing unit to be installed in the compartments in the refrigerator. Another problem is that the deodorizing unit was not designed to be safe for food in case that part of the deodorizing unit is damaged to give harmful damage to food.
    Type: Application
    Filed: April 24, 2002
    Publication date: March 13, 2003
    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Keiji Ohya, Mutsumi Kato, Katsumasa Sakamoto, Junji Yoshida, 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: 6432875
    Abstract: A thermal recording material includes a condensation reaction product of a carboxylic acid component (A) with a polyhydric alcohol component (B) in a thermal recording layer as an essential component, wherein the carboxylic acid component (A) includes (poly) 4-hydroxybenzoic acid represented by the following general formula (I) as an essential component and another monocarboxylic acid and/or dicarboxylic acid as an arbitrary component, and wherein the polyhydric alcohol component (B) includes a polyhydric alcohol which is a trihydric or more alcohol as an essential component and a dihydric low molecular-weight alcohol as an arbitrary component. wherein in the general formula(I), a letter p denotes an integer ranging from 0 to 2.
    Type: Grant
    Filed: December 1, 1999
    Date of Patent: August 13, 2002
    Assignee: Asahi Denka Kogyo K.K.
    Inventors: Mitsuo Akutsu, Nobuhide Tominaga, Keiji Ohya, Koichi Shigeno, Takahiro Mori
  • 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: 4734666
    Abstract: In a microwave apparatus with an air-tight window plate, first and second coaxial waveguide assemblies are coupled to each other so that a coaxial waveguide is formed. The first and second inner conductor sections of the first and second assemblies have first and second metal blocks. The first metal block is fitted in the second metal block by a shinkage fit and the first outer conductor section of the first assembly is air-tightly welded to the second outer conductor section of the second assembly. An RF matching annular groove is defined between the first and second metal blocks.
    Type: Grant
    Filed: April 17, 1987
    Date of Patent: March 29, 1988
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Keiji Ohya, Yoshio Kawakami