Patents by Inventor John A. Gregor

John A. Gregor 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).

  • Stampable polymeric composite containing an EMI/RFI shielding layer
    Patent number: 4678699
    Abstract: A stampable thermoplastic composite having at least one thermoplastic layer and at least one shielding layer. The shielding layer comprises a material having an elongation to break of at least 8 percent, and the composite having an EMI/RFI shielding effectiveness of at least 30 db.
    Type: Grant
    Filed: January 11, 1985
    Date of Patent: July 7, 1987
    Assignee: Allied Corporation
    Inventors: Gina R. Kritchevsky, John A. Gregor, Manfred W. Gruendig, Gregory J. Sellers, Barbara Liss
  • Amorphous antipilferage marker
    Patent number: 4484184
    Abstract: A magnetic theft detection system marker is adapted to generate magnetic fields at frequencies that (1) are harmonically related to an incident magnetic field applied within an interrogation zone and (2) have selected tones that provide the marker with signal identity. The marker is an elongated, ductile strip of amorphous ferromagnetic material having a composition defined by the formula M.sub.a N.sub.b O.sub.c X.sub.d Y.sub.e Z.sub.f, where M is at least one of iron and cobalt, N is nickel, O is at least one of chromium and molybdenum, X is at least one of boron and phosphorous, Y is silicon, Z is carbon, "a"-"f" are in atom percent, "a" ranges from about 35-85, "b" ranges from about 0-45, "c" ranges from about 0-7, "d" ranges from about 5-22, "e" ranges from about 0-15 and "f" ranges from about 0-2, and the sum of d+e+f ranges from about 15-25.
    Type: Grant
    Filed: August 13, 1981
    Date of Patent: November 20, 1984
    Assignee: Allied Corporation
    Inventors: John A. Gregor, Gregory J. Sellers
  • Thermoplastic laminate having masked surface fabric veil layer
    Patent number: 4471018
    Abstract: An improved polymer sheet. The improvement is at least one surface polymer film layer and at least one fabric veil. A veil is laminated between each surface polymer film layer and the polymer sheet. There is a method of heating a polymer sheet containing the improvement of the present invention.
    Type: Grant
    Filed: May 5, 1982
    Date of Patent: September 11, 1984
    Assignee: Allied Corporation
    Inventors: Gina R. Kritchevsky, John A. Gregor, William F. Wiederspahn, Margaret M. Randle, Joseph E. Mackey
  • Amorphous antipilferage marker
    Patent number: 4298862
    Abstract: A magnetic theft detection system marker is adapted to generate magnetic fields at frequencies that (1) are harmonically related to an incident magnetic field applied within an interrogation zone and (2) have selected tones that provide the marker with signal identity. The marker is an elongated, ductile strip of amorphous ferromagnetic material that retains its signal identity after being flexed or bent.
    Type: Grant
    Filed: April 23, 1979
    Date of Patent: November 3, 1981
    Assignee: Allied Chemical Corporation
    Inventors: John A. Gregor, Gregory J. Sellers
  • Amorphous antipilferage marker
    Patent number: RE32427
    Abstract: A magnetic theft detection system marker is adapted to generate magnetic fields at frequencies that (1) are harmonically related to an incident magnetic field applied within an interrogation zone and (2) have selected tones that provide the marker with signal identity. The marker is an elongated, ductile strip of amorphous ferromagnetic material that retains its signal identity after being flexed or bent.
    Type: Grant
    Filed: June 3, 1985
    Date of Patent: May 26, 1987
    Inventors: John A. Gregor, Gregory J. Sellers
  • Amorphous antipilferage marker
    Patent number: RE32428
    Abstract: A magnetic theft detection system marker is adapted to generate magnetic fields at frequencies that (1) are harmonically related to an incident magnetic field applied within an interrogation zone and (2) have selected tones that provide the marker with signal identity. The marker is an elongated, ductile strip of amorphous ferromagnetic material having a composition defined by the formula M.sub.a N.sub.b O.sub.c X.sub.d Y.sub.e Z.sub.f, where M is at least one of iron and cobalt, N is nickel, O is at least one of chromium and molybdenum, X is at least one of boron and phosphorous, Y is silicon, Z is carbon, "a"-"f" are in atom percent, "a" ranges from about 35-85, "b" ranges from about 0-45, "c" ranges from about 0-7, "d" ranges from about 5-22, "e" ranges from about 0-15 and "f" ranges from about 0-2, and the sum of d+e+f ranges from about 15-25.
    Type: Grant
    Filed: June 3, 1985
    Date of Patent: May 26, 1987
    Assignee: Allied Corporation
    Inventors: John A. Gregor, Gregory J. Sellers