Patents Represented by Attorney Steven J. Church
  • Patent number: 5750921
    Abstract: A process has been developed to produce high-quality high explosive (HE) molding powder which is safe, efficient, has a low-cost, and is non-polluting. The method involves utilizing a chemically inert, non-aqueous carrier fluid as a processing liquid to facilitate the coating process.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: May 12, 1998
    Inventors: May L. Chan, Alan D. Turner
  • Patent number: 5578699
    Abstract: A process for synthesizing novel conjugated amino substituted phenylene pmers is disclosed. The process results in polymers having non-linear optical properties, and the polymers can be converted to electrically conductive polymers. The process involves reacting a novel bis-cycloalkylene sulfonium salt of 2,5,N,N-tetramethylaniline hydrochloride, such as 2,5-(N,N-dimethyl)aniline hydrochloride dimethylene bis-(tetramethylene sulfonium chloride) with alkali metal hydroxide to form a cycloalkylene sulfonium salt precursor polymer, and then heating the precursor polymer under conditions to produce the amino substituted phenylene vinylene polymer, such as poly(2-(N,N-dimethylamino) phenylene vinylene). Another process involves treatment of the bis chlormethyl dimethyl aniline hydrochloride derivative with alkali metal alkoxide.
    Type: Grant
    Filed: May 18, 1995
    Date of Patent: November 26, 1996
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: John D. Stenger-Smith, William P. Norris, Andrew P. Chafin, Scott T. Sackinger