Patents by Inventor Mikio Hihara

Mikio Hihara 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).

  • Form device for cellular concrete and method of making such concrete
    Patent number: 5110084
    Abstract: A form device for cellular concrete, including a number of piled-up form units having a heat-insulating bottom and shell, a heat-insulating top board, and a bottom-to-shell joint. A cellular concrete manufacture is produced by mixing cement with warm water at a temperature of 40.degree. to 75.degree. C. to form a warm cement mortar, mixing the mortar with a bubbled warm frother solution to form a warm cellular concrete paste, and hardening the paste using such heat-insulating form device.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: May 5, 1992
    Assignee: Nissei Plan, Inc.
    Inventors: Mikio Hihara, Nobuhisa Suzuki
  • Strengthened cellular concrete compositions and method of making
    Patent number: 5091014
    Abstract: A cellular concrete composition containing as a frother, polycarboxylic acids and organosilicon compounds, or together with alkylene glycols and/or nonionic active agents. It is made by mixing a cement paste with a bubbled frother solution containing polycarboxylic acids and organosilicon compounds or together with alkylene glycols and/or nonionic surface active agents, follow by casting the mixture into a form to solidify.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: February 25, 1992
    Assignee: Nissei Plan, Inc.
    Inventors: Mikio Hihara, Nobuhisa Suzuki
  • Strengthened cellular concrete compositions and method of making
    Patent number: 5087287
    Abstract: A cellular concrete composition having improved strength consisting of hydraulic cement, water and at least one alpha, beta-unsaturated dicarboxylic acid such a maleic or fumaric acid. A method is also provided comprising preparing a cement paste containing hyraulic cement and water, mixing the cement paste with a bubbled frother solution containing at least one alpha, beta-unsaturated dicarboxylic acid and optionally an alkylene glycol and/or a nonionic surface-active agent, and casting the mixture in a mold to solidify.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: February 11, 1992
    Assignee: Nissei Plan, Inc.
    Inventors: Mikio Hihara, Nobuhisa Suzuki
  • Method of making strengthened cellular concrete compositions containing alpha,beta-unsaturated dicarboxylic acid
    Patent number: 5047085
    Abstract: A cellular concrete composition containing as a frother polycarboxylic acids or together with alkylene glycols and/or nonionic surface active agents. It is made by mixing a cement paste with a bubbled frother solution containing polycarboxylic acids or together with alkylene glycols and/or nonionic surface active agents, follow by casting the mixture into a form to solidify.
    Type: Grant
    Filed: September 25, 1990
    Date of Patent: September 10, 1991
    Assignee: Nissei Plan, Inc.
    Inventors: Mikio Hihara, Nobuhisa Suzuki
  • Mixer unit for cellular concrete paste and method of making such paste
    Patent number: 4966463
    Abstract: A cellular concrete paste mixer unit is provided consisting of a first mixer and an increased number of second mixers. The mixer unit is able to simultaneously produce cement paste and cellular concrete paste. A method of making cellular concrete paste using the claimed mixer unit is also provided.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: October 30, 1990
    Assignee: Nisset Plan, Inc.
    Inventors: Mikio Hihara, Nobuhisa Suzuki
  • Bubble generator for cellular concrete
    Patent number: 4932786
    Abstract: A bubble generator for producing cellular concrete which comprises an interchangeable housing containing a plurality of particles. The housing is releasably connected to a first and second retaining means at its respective first and second ends for retaining the particles in the housing. The particles contained in the housing can be the same or different in size, substantially spherical or nodular in shape, and about 100 to 6000 in number. The device generates uniform and strong bubbles of frother solution for cellular concrete.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: June 12, 1990
    Assignee: Nissei Plan, Inc.
    Inventors: Mikio Hihara, Nobuhisa Suzuki