Patents by Inventor Mark A. Harmer

Mark A. Harmer 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).

  • Catalyst of mixed fluorosulfonic acids
    Patent number: 6593505
    Abstract: A catalyst comprising A) a stationary acid component selected from the group consisting of a perfluorinated ion exchange polymer on an inert support, a silane modified perfluorosulfonic acid, and a sulfated metal oxide; and B) a mobile acid component selected from the group consisting of chlorosulfonic acid, fluorosulfonic acid, a fluorinated monosulfonic acid, a fluorinated sulfonimide, a fluorinated disulfonic acid, and an adjunct acid mixture is disclosed.
    Type: Grant
    Filed: January 13, 2003
    Date of Patent: July 15, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mark A. Harmer, Eugene F. Hartstein
  • Catalyst of mixed fluorosulfonic acids
    Publication number: 20030125197
    Abstract: A catalyst comprising A) a stationary acid component selected from the group consisting of a perfluorinated ion exchange polymer on an inert support, a silane modified perfluorosulfonic acid, and a sulfated metal oxide; and B) a mobile acid component selected from the group consisting of chlorosulfonic acid, fluorosulfonic acid, a fluorinated monosulfonic acid, a fluorinated sulfonimide, a fluorinated disulfonic acid, and an adjunct acid mixture is disclosed.
    Type: Application
    Filed: January 13, 2003
    Publication date: July 3, 2003
    Inventors: Mark A. Harmer, Eugene F. Hartstein
  • Catalyst of mixed fluorosulfonic acids
    Patent number: 6531640
    Abstract: A catalyst comprising A) a stationary acid component selected from the group consisting of a perfluorinated ion exchange polymer on an inert support, a silane modified perfluorosulfonic acid, and a sulfated metal oxide; and B) a mobile acid component selected from the group consisting of chlorosulfonic acid, fluorosulfonic acid, a fluorinated monosulfonic acid, a fluorinated sulfonimide, a fluorinated disulfonic acid, and an adjunct acid mixture is disclosed.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: March 11, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mark A. Harmer, Eugene F. Hartstein
  • Catalyst of mixed fluorosulfonic acids
    Publication number: 20020137626
    Abstract: A catalyst comprising A) a stationary acid component selected from the group consisting of a perfluorinated ion exchange polymer on an inert support, a silane modified perfluorosulfonic acid, and a sulfated metal oxide; and B) a mobile acid component selected from the group consisting of chlorosulfonic acid, fluorosulfonic acid, a fluorinated monosulfonic acid, a fluorinated sulfonimide, a fluorinated disulfonic acid, and an adjunct acid mixture is disclosed.
    Type: Application
    Filed: March 26, 2002
    Publication date: September 26, 2002
    Inventors: Mark A. Harmer, Eugene F. Hartstein
  • Catalyst of mixed fluorosulfonic acids
    Patent number: 6395673
    Abstract: A catalyst comprising A) a stationary acid component selected from the group consisting of a perfluorinated ion exchange polymer on an inert support, a silane modified perfluorosulfonic acid, and a sulfated metal oxide; and B) a mobile acid component selected from the group consisting of chlorosulfonic acid, fluorosulfonic acid, a fluorinated monosulfonic acid, a fluorinated sulfonimide, a fluorinated disulfonic acid, and an adjunct acid mixture is disclosed.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: May 28, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mark A. Harmer, Eugene F. Hartstein
  • Fibers reinforced with inorganic whiskers
    Patent number: 5512368
    Abstract: Disclosed herein are organic polymeric fibers containing inorganic whiskers. The fibers are made from polymers which are anisotropic. Such polymers include, for example, certain aramids and polybenzobisthiazoles. The physical properties of the fibers are improved, and are useful, for example, in ropes and composites.
    Type: Grant
    Filed: March 16, 1995
    Date of Patent: April 30, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Mark A. Harmer, Brian R. Phillips
  • Etching of nanoscale structures on high temperature superconductors
    Patent number: 5304535
    Abstract: A process for etching with a scanning tunneling microscope on both a single crystal and a thin film of high temperature superconductor is disclosed.
    Type: Grant
    Filed: October 29, 1990
    Date of Patent: April 19, 1994
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mark A. Harmer, Bruce A. Parkinson
  • Optically useful compositions and a sol-gel process for their production
    Patent number: 5281405
    Abstract: A sol-gel process is disclosed for preparing MTiOXO.sub.4 when M is K, Rb, Tl and/or NH.sub.4 and X is P and/or As which involves dissolving suitable compounds of M, Ti and X in stoichiometic amounts in a suitable organic liquid, and then producing crystalline MTiOXO.sub.4 using procedures including hydrolysis, condensation, solidification and pyrolysis. Bulk material and films (e.g., films of KTP on a single crystal silicon substrate) may be produced. Compositions comprising films of said MTiOXO.sub.4 produced by this process are disclosed.
    Type: Grant
    Filed: February 19, 1992
    Date of Patent: January 25, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Mark A. Harmer
  • Chemical modification of surfaces using heterocyclic azides
    Patent number: 5277772
    Abstract: The invention concerns a method for the chemical modification of a surface based on the reaction of photolytically generated reactive intermediates derived from azido heterocycles with said surface.
    Type: Grant
    Filed: April 26, 1991
    Date of Patent: January 11, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Mark A. Harmer
  • Organic-inorganic polymeric composites
    Patent number: 5252654
    Abstract: A polymeric composite of an organic polymer and an inorganic glassy polymer and a process for making such composites which are useful as protective coatings and as nonlinear optical elements.
    Type: Grant
    Filed: July 3, 1991
    Date of Patent: October 12, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Israel A. David, Mark A. Harmer, Jeffrey S. Meth, George W. Scherer