Patents Examined by Gentile E. Winter
  • Patent number: 6428717
    Abstract: A hydrophilic polymer material such as polyvinyl alcohol is formed into a porous film (301). A film (holding film) (303) made from a hydrophobic polymer material such as polyvinyl acetate is formed on the inner walls of a large number of pores (302) formed in the porous film (301). Lithium chloride (304) is held in these pores (302).
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: August 6, 2002
    Assignee: Yamatake-Honeywell Co., Ltd.
    Inventors: Yoshiro Sakai, Masanobu Matsuguchi, Hiroyuki Hara, Sachiko Suzuki, Nobuaki Honda