Patents by Inventor Shuichi Sakanoue

Shuichi Sakanoue 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: 6656891
    Abstract: The invention provides a refrigerating machine oil composition by which a capillary tube is hardly clogged when a hydrofluorocarbon type, a hydrocarbon type, an ether type, a carbon dioxide type or an ammonia type is used as a refrigerant. It is a refrigerating machine oil composition in which base oil containing at least one oxygen-containing synthetic oil selected from a polyvinyl ether and a polyol ester is mixed with 1 to 20% by weight, based on the total amount of the composition, of a specific polyalkylene glycol alkyl ether or 1 to 40% by weight, based on the total amount of the composition, of an alkylbenzene having a number average molecular weight of 100 to 1,000.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: December 2, 2003
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Shuichi Sakanoue, Masahiko Takesue, Minoru Takagi
  • Publication number: 20030125219
    Abstract: A lubricating oil composition which comprises at least one compound selected from specific cyclic organic phosphorus compounds is disclosed.
    Type: Application
    Filed: June 27, 2002
    Publication date: July 3, 2003
    Inventors: Toshinori Tazaki, Hideto Kamimura, Shuichi Sakanoue
  • Patent number: 6322719
    Abstract: A refrigerating oil composition which exhibits excellent lubrication properties when used in combination with certain types of coolant, such as a hydrofluorocarbon coolant, which may serve as substitutes for chlorofluorocarbon coolants which have been implicated as causing environmental problems. The refrigerating oil composition of the present invention is obtained by incorporating, into a component (A); i.e., a base oil containing a synthetic oil, a component (B); i.e, a polyalkylene glycol derivative of formula (I) having a number average molecular weight of 200-3,000: R1—(OR2)m—(OR3)n—OR4  (I) wherein R1 and R4 represent C1-C30 hydrocarbon groups, etc.; R2 represents a C2-C4 alkylene group; R3 represents a C2-C30 alkylene group; m and n are numbers that satisfy the above-described molecular weight conditions, wherein n may be 0; and at least one of R1, R3, and R4 has a hydrocarbon group having six or more carbon atoms.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: November 27, 2001
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Masato Kaneko, Toshinori Tazaki, Shuichi Sakanoue
  • Publication number: 20010011716
    Abstract: A refrigerating oil composition which exhibits excellent lubrication properties when used in combination with certain types of coolant, such as a hydrofluorocarbon coolant, which may serve as substitutes for chlorofluorocarbon coolants which have been implicated as causing environmental problems. The refrigerating oil composition of the present invention is obtained by incorporating, into a component (A); i.e., a base oil containing a synthetic oil, a component (B); i.
    Type: Application
    Filed: December 28, 2000
    Publication date: August 9, 2001
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Masato Kaneko, Toshinori Tazaki, Shuichi Sakanoue
  • Patent number: 6193906
    Abstract: A refrigerating oil composition which exhibits excellent lubrication properties when used in combination with certain types of coolant, such as a hydrofluorocarbon coolant, which may serve as substitutes for chlorofluorocarbon coolants which have been implicated as causing environmental problems. The refrigerating oil composition of the present invention is obtained by incorporating, into a component (A); i.e., a base oil containing a synthetic oil, a component (B); i.e, a polyalkylene glycol derivative of formula (I) having a number average molecular weight of 200-3,000: R1—(OR2)m—(OR3)n—OR4  (I) wherein R1 and R4 represent C1-C30 hydrocarbon groups, etc.; R2 represents a C2-C4 alkylene group; R3 represents a C2-C30 alkylene group; m and n are numbers that satisfy the above-described molecular weight conditions, wherein n may be 0; and at least one of R1, R3, and R4 has a hydrocarbon group having six or more carbon atoms.
    Type: Grant
    Filed: February 26, 1998
    Date of Patent: February 27, 2001
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Masato Kaneko, Toshinori Tazaki, Shuichi Sakanoue