Patents by Inventor Jin-Kai Wang

Jin-Kai Wang 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).

  • Preparation of N-substituted maleimides by use of tin catalysts
    Patent number: 5068357
    Abstract: A process for the preparation of N-substituted maleimides by conducting heat-dehydration and dehydrating imidization of N-substituted maleamic acids under azeotropic distillation of generated water in a solvent mixture containing a solvent capable of forming water azeotrope and an organic aproptic polar solvent, in the presence as catalyst of metallic tin, tin oxide, a tin salt of a maleamic acid or a tin compound which forms a thin salt of the N-substituted maleamic acid in the reaction system.
    Type: Grant
    Filed: June 11, 1990
    Date of Patent: November 26, 1991
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Ryuichiro Tsumura, Teruo Muraishi, Keiichi Ideda, Jin-Kai Wang
  • Washing machine
    Patent number: D680281
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: April 16, 2013
    Assignees: Haier Group Corporation, Qingdao Haier Drum Washing Machine Co., Ltd.
    Inventors: Xu Song Qin, Jin Kai Wang, Dong Xuan Wang
  • Drum type washing machine
    Patent number: D739095
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: September 15, 2015
    Assignees: HAIER GROUP CORPORATION, QINGDAO HAIER DRUM WASHING MACHINE CO., LTD.
    Inventors: Hai Shu, Wen Wei Li, Rong Shuai Cai, Jin Kai Wang, Bin Ding, Jian Ping Zhu, Chun Hui Jiang