Patents by Inventor Toshikage Asakura

Toshikage Asakura 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).

  • Oxime sulfonates and the use thereof as latent sulfonic acids
    Patent number: 6004724
    Abstract: New oximsulfonate compounds of the formulae I or II, ##STR1## wherein m is 0 or 1; x is 1 or 2; R.sub.1 is, for example phenyl, which is unsubstituted or substituted or R.sub.1 is a heteroaryl radical that is unsubstituted or substituted, or, if m is 0, R.sub.1 additionally is C.sub.2 -C.sub.6 alkoxycarbonyl, phenoxycarbonyl or CN; R'.sub.1 is for example C.sub.2 -C.sub.12 alkylene, phenylene; R.sub.2 has for example one of the meanings of R.sub.1 ; n is 1 or 2; R.sub.3 is for example C.sub.1 -C.sub.18 alkyl, R'.sub.3 when x is 1, has one of the meanings given for R.sub.3, or R'.sub.3 in the formula IV and when x is 2 in the formula 1, is for example C.sub.2 -C.sub.12 alkylene, phenylene; R.sub.4 and R.sub.5 are independently of each other for example hydrogen, halogen, C.sub.1 -C.sub.6 alkyl; R.sub.6 is for example hydrogen, phenyl; R.sub.7 and R.sub.8 are independently of each other for example hydrogen or C.sub.1 -C.sub.12 -alkyl; R.sub.9 is for example C.sub.1 -C.sub.12 alkyl; A is S, O, NR.sub.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: December 21, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Hitoshi Yamato, Hartmut Bleier, Jean-Luc Birbaum, Martin Kunz, Kurt Dietliker, Christoph De Leo, Toshikage Asakura
  • Sheet-like heating elements and preparation thereof
    Patent number: 5382382
    Abstract: A sheet-like heating element using an electrically conductive polymer complex consisting of a) a polycation of polyheteroaromatic compound; and b) a polyanion of thermoplastic polymer, containing a sulfated alcohol group in the repeating structural unit, having film-forming properties.
    Type: Grant
    Filed: March 11, 1993
    Date of Patent: January 17, 1995
    Assignee: Japat Ltd.
    Inventors: Toshikage Asakura, Wolfgang Wernet, Masaki Ohwa, Kenichiro Kai