Patents by Inventor Masaki Hasegawa

Masaki Hasegawa 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: 5229226
    Abstract: A nonaqueous electrolyte secondary battery is disclosed which has a positive and negative electrode and electrolyte, the positive and negative electrode being reversible for charging and discharging, the electrolyte being a nonaqueous one containing alkaline metal ions, and the negative electrode being made of BC.sub.3 or C.sub.5 N, so that the battery is of high energy density and is highly reliable with reasonable voltage.
    Type: Grant
    Filed: June 15, 1992
    Date of Patent: July 20, 1993
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yasuhiko Bito, Hiroyuki Murai, Masaki Hasegawa, Shuji Ito
  • Patent number: 5217826
    Abstract: A lithium-ion conducting solid electrolyte of the present invention comprises a parent material, a lithium-ion conducting sulfide glass represented by the formula Li.sub.2 S--X (X is at least one sulfide selected from the group consisting of B.sub.2 S.sub.3, SiS.sub.2, P.sub.2 S.sub.5, Al.sub.2 S.sub.3, and GeS.sub.2), and a high-temperature lithium-ion conducting compound (i.e. Li.sub.3 PO.sub.4 or Li.sub.2 SO.sub.4). The lithium-ion conducting solid electrolyte has higher ionic conductivity and higher decomposition voltage compared to the parent material. By the use of this solid electrolyte for electrical/chemical components such as batteries, condensers, electrochromic displays, and the like, electronic apparatus that includes such elements may have improved performance.
    Type: Grant
    Filed: July 29, 1991
    Date of Patent: June 8, 1993
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yasuharu Yamamura, Masaki Hasegawa, Kazunori Takada, Shigeo Kondo
  • Patent number: 5089642
    Abstract: A carboalkylated amino alcohol having each of the below shown formulae is novel and optically active. A separating agent comprising the alcohol and a support is effectively useful to separate a variety of racemates for example with chromatography. The alcohol may be chemically or physically combined with the support.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: February 18, 1992
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Masaki Hasegawa, Kazuhiko Saigo, Yoichi Yuki, Kouzou Tachibana
  • Patent number: 5041573
    Abstract: A carboalkylated amino alcohol having each of the below shown formulae is novel and optically active. A separating agent comprising the alcohol and a support is effectively useful to separate a variety of racemates for example with chromatography. The alcohol may be chemically or physically combined with the support. ##STR1## [wherein Ph represents a phenyl group, R represents a hydrogen atom, an alkyl group having the carbon number of 1 to 10, or an aryl group having the carbon number of 6 to 10, X represents an --O-- group or a --S-- group, and Z represents a hydrogen atom, an alkyl group having the carbon number of 1 to 10 or a metal element].
    Type: Grant
    Filed: October 18, 1989
    Date of Patent: August 20, 1991
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Masaki Hasegawa, Kazuhiko Saigo, Yoichi Yuki, Kouzou Tachibana
  • Patent number: 4975517
    Abstract: A racemic, anti head-to-head coumarin dimer can be separated into its optically active constituents by using an optically active amine. Each optically active isomer can be further reacted with a diamine to afford an optically active polyamide.
    Type: Grant
    Filed: March 26, 1987
    Date of Patent: December 4, 1990
    Assignee: Masaki Hasegawa
    Inventors: Masaki Hasegawa, Kazuhiko Saigou, Noriyuki Yonezawa, Toshio Kanoe, Kazuhiro Sekimoto
  • Patent number: 4966985
    Abstract: A carboalkylated amino alcohol having each of the below shown formulae is novel and optically active. A separating agent comprising the alcohol and a support is effectively useful to separate a variety of racemates for example with chromatography. The alcohol may be chemically or physically combined with the support. ##STR1## [wherein Ph represents a phenyl group, R represents a hydrogen atom, an alkyl group having the carbon number of 1 to 10, or an aryl group having the carbon number of 6 to 10, X represents an --0-- group or a --S-- group, and Z represents a hydrogen atom, an alkyl group having the carbon number of 1 to 10 or a metal element].
    Type: Grant
    Filed: December 24, 1986
    Date of Patent: October 30, 1990
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Masaki Hasegawa, Kazuhiko Saigo, Yoichi Yuki, Kouzou Tachibana