Patents by Inventor Johnny O. Sim

Johnny O. Sim 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).

  • Paint stripper
    Patent number: 5487789
    Abstract: A paint-stripper composition is described which comprises(A) at least one organic solvent selected from the group consisting of benzyl alcohol, alkyl-substituted benzyl alcohols, furfuryl alcohol, alkyl-substituted furfuryl alcohols and acetylenic alcohols containing from 3 to about 5 carbon atoms;(B) pyrrole as a co-solvent; and(C) at least one other organic amine compound as an activator.A method of stripping paint from a surface also is described, and the method comprises(A) contacting the paint with a paint-stripper composition which is free of organic phosphites and phosphines and comprises(A-1) at least one organic solvent selected from the group consisting of benzyl alcohol alkyl-substituted benzyl alcohols, furfuryl alcohol, alkyl-substituted furfuryl alcohols and acetylenic alcohols containing from 3 to about 5 carbon atoms; and(A-2) at least 0.
    Type: Grant
    Filed: November 9, 1994
    Date of Patent: January 30, 1996
    Assignee: McGean-Rohco, Inc.
    Inventor: Johnny O. Sim
  • Paint stripper
    Patent number: 5411678
    Abstract: A paint-stripper composition is described which comprises(A) at least one organic solvent selected from the group consisting of benzyl alcohol, alkyl-substituted benzyl alcohols, furfuryl alcohol, alkyl-substituted furfuryl alcohols and acetylenic alcohols containing from 3 to about 5 carbon atoms;(B) pyrrole as a co-solvent; and(C) at least one other organic amine compound as an activator.A method of stripping paint from a surface also is described, and the method comprises(A) contacting the paint with a paint-stripper composition which is free of organic phosphites and phosphines and comprises(A-1) at least one organic solvent selected from the group consisting of benzyl alcohol alkyl-substituted benzyl alcohols, furfuryl alcohol, alkyl-substituted furfuryl alcohols and acetylenic alcohols containing from 3 to about 5 carbon atoms; and(A-2) at least 0.
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: May 2, 1995
    Assignee: McGean-Rohco, Inc.
    Inventor: Johnny O. Sim