Patents by Inventor Husheng Zhang

Husheng Zhang 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).

  • Process for the preparation of porous material and porous material
    Patent number: 6319404
    Abstract: A porous material is disclosed, made of a semi IPN type polymer alloy of a crosslinked polymer (A) obtained by the crosslinking polymerization of a crosslinking-polymerizable vinyl monomer and/or oligomer (a) with a non-crosslinked polymer (D) which is soluble in a solvent (B) capable of dissolving said monomer and/or oligomer (a) therein and subjecting said crosslinked polymer (A) to gelation but is insoluble in a coagulating solution (C) which is compatible with said solvent (B) but doesn't subject said crosslinked polymer (D) to gelation. A porous material excellent in mechanical strength as well as in heat resistance can be prepared. Various functional groups can be introduced into the surface of the porous material. Further, the pore diameter can be easily controlled.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: November 20, 2001
    Assignees: Dainippon Ink Chemicals, Inc., Kawamura Institute of Chemical Research
    Inventors: Husheng Zhang, Takanori Anazawa, Yasuko Watanabe, Miyuki Miyajima
  • Process for producing material with hydrophilic surface
    Patent number: 5889073
    Abstract: Disclosed is a process for producing a material having hydrophilic surface which comprises forming a hydrophobic photopolymerizable composition comprising a hydrophobic compound (a) having two or more polymerizable unsaturated double bonds per molecule and a photopolymerization initiator into a desired form and irradiating the resultant shape (b) with actinic rays while keeping the surface of the shape (b) in contact with a hydrophilic liquid (d) containing a hydrophilic compound (c) having one or more polymerizable unsaturated double bonds under such conditions that a photopolymerization reaction is prevented from occurring in the hydrophilic liquid (d) except at the interface between the liquid (d) and the shape (b), whereby the shape (b) is cured and, at the same time, the hydrophobic compound (a) is copolymerized with the hydrophilic compound (c) at the interface between the shape (b) and the hydrophilic liquid (d) to chemically bond molecules of the hydrophilic compound (c) to the surface of the hydropho
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: March 30, 1999
    Assignees: Dainippon Ink & Chemicals, Inc., Kawamura Institute of Chemical Research
    Inventors: Husheng Zhang, Takanori Anazawa, Hiroshi Ebato
  • Asymmetric polymer membrane and preparation thereof
    Patent number: 5236588
    Abstract: An asymmetric polymer membrane is disclosed characterized by being formed by irradiating a monomer and/or an oligomer polymerizable with an energy ray and having a pore diameter distribution in the thickness direction of the membrane, a ratio of a permeability flux of oxygen to nitrogen of 0.9-1.1, and communicating pores.
    Type: Grant
    Filed: October 18, 1991
    Date of Patent: August 17, 1993
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Husheng Zhang, Takanori Anazawa, Kazunari Sakai