Patents by Inventor Norman L. Madison, deceased

Norman L. Madison, deceased 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).

  • Three-dimensional articles of lyotropic polymers and methods for the preparation
    Patent number: 5788888
    Abstract: Described is a process for preparing a three-dimensional article of a lyotropic polymer comprising the steps of (a) forming a shaped article of a liquid crystalline solution of a lyotropic polymer; (b) washing the shaped article with a washing fluid under conditions sufficient to reduce the solvent content of the article to less than about 2,000 parts per million, wherein the dimensions of the washed article are no less than 0.05 inches by 0.05 inches by 0.05 inches. Such articles are useful for many applications, particularly those requiring fire- and/or heat-resistance.
    Type: Grant
    Filed: October 28, 1994
    Date of Patent: August 4, 1998
    Assignee: The Dow Chemical Company
    Inventors: Arie Cohen, Myrna Serrano, Norman L. Madison, deceased, Peter E. Pierini, Ritchie A. Wessling, Donald E. McLemore, Donald L. Schmidt