Patents by Inventor Doo-yeon Lee

Doo-yeon Lee 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).

  • Polymer solid electrolyte, method for manufacturing polymer solid electrolyte, and lithium secondary cell adopting polymer solid electrolyte
    Patent number: 5965300
    Abstract: A polymer solid electrolyte, a method for manufacturing the polymer solid electrolyte, and a lithium secondary cell adopting the polymer solid electrolyte are provided. The polymer solid electrolyte includes a polymer electrolyte medium, at least one vinylidene fluoride resin and/or at least one N,N-diethylacrylamide. The polymer solid electrolyte provides excellent ion conductivity and mechanical strength.
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: October 12, 1999
    Assignee: Samsung Electroonics Co., Ltd.
    Inventors: Doo-yeon Lee, Sang-hyun Seong, Hyung-bok Lee
  • Polymer solid electrolyte and lithium secondary cell adopting the same
    Patent number: 5952126
    Abstract: A polymer solid electrolyte that is useable in a lithium secondary cell comprising a polymer matrix, a polymerization initiator, an inorganic salt and a solvent. The polymer matrix is composed of a copolymer of a monomer having an amide group at a side chain and a polymer with an oxyethylene repeating unit. The polymer solid electrolyte has excellent conductivity and can easily be processed due to its good mechanical property.
    Type: Grant
    Filed: July 30, 1997
    Date of Patent: September 14, 1999
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Doo-yeon Lee, Sang-hyun Sung, Yasumasa Hirai, Seok-gwang Doo
  • Alkali-zinc secondary battery
    Patent number: 5681672
    Abstract: An alkali-zinc secondary battery, employing zinc anode and alkali electrolyte solution comprising barium fluoride, which is much improved in cycle life as well as in efficiency of charge and discharge.
    Type: Grant
    Filed: December 26, 1995
    Date of Patent: October 28, 1997
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Doo-yeon Lee