Patents by Inventor Katsuyuki Maida

Katsuyuki Maida 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).

  • Oil recovery method and oil recovery apparatus
    Patent number: 6540925
    Abstract: An apparatus for recovering oil has a bucket for skimming and collecting water and oil floating on the surface of the water. The bucket has a base plate having apertures for draining water collected by the bucket. The apertures have a preselected diameter and length to allow separation of the oil and water utilizing differences in specific gravities and viscosities of the oil and water so that the oil can be discharged from the bucket into an oil recovery tank after the water drains out of the bucket through the apertures but before the oil begins to drain out of the apertures.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: April 1, 2003
    Assignee: Nishimuragumi Co., Ltd.
    Inventors: Shinjiro Takahashi, Katsuyuki Maida, Hiroshi Saeki
  • Oil recovery method and oil recovery apparatus
    Publication number: 20010037983
    Abstract: An apparatus for recovering oil has a bucket for skimming and collecting water and oil floating on the surface of the water. The bucket has a base plate having apertures for draining water collected by the bucket. The apertures have a preselected diameter and length to allow separation of the oil and water utilizing differences in specific gravities and viscosities of the oil and water so that the oil can be discharged from the bucket into an oil recovery tank after the water drains out of the bucket through the apertures but before the oil begins to drain out of the apertures.
    Type: Application
    Filed: April 27, 2001
    Publication date: November 8, 2001
    Inventors: Shinjiro Takahashi, Katsuyuki Maida, Hiroshi Saeki