Patents by Inventor Eugene V. Hoefs

Eugene V. Hoefs 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).

  • Thermal print paper and process
    Patent number: 6613716
    Abstract: A coating composition is applied to a print stock substrate for preparing a thermally-active layer, the coating composition comprising: a developer comprising at least one or a combination of 6′-dipentylamino-3′-methyl-2′(phenylamino)-spiro [isobenzofuran-1(3H),9′-[9H]xanthen]-3-one (CAS No. 129473-78-5) and 6′-dibutylamino-3′-methyl-2′(phenylamino)-spiro [isobenzofuran-1(3H),9′-[9H]xanthen]-3-one (CAS No. 89331-94-2); a sensitizer comprising at least one or a combination of 1,1′-sulfonylbisbenzene (CAS No. 127-63-9) and dimethylterephthalate (CAS No. 120-61-6); and a coreactant (or developer) comprising at least one or a combination of bis(4-hydroxyphenyl)-4-methylpentane (CAS No. 6807-17-6) and 4-hydroxy-4′-isopropoxydiphenylsulfone (CAS No. 95235-30-6). Preferably, the print stock substrate will be coated with clay or the like to provide a smooth coating surface for the thermally-active layer.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: September 2, 2003
    Assignee: Miami Wabash Paper LLC
    Inventors: Eugene V. Hoefs, Regina A. Kleinhenz
  • Thermal print paper and process
    Publication number: 20020183203
    Abstract: A coating composition is applied to a print stock substrate for preparing a thermally-active layer, the coating composition comprising: a developer comprising at least one or a combination of 6′-dipentylamino-3′-methyl-2′(phenylamino)-spiro [isobenzofuran-1(3H),9′-[9H]xanthen]-3-one (CAS No. 129473-78-5) and 6′-dibutylamino-3′-methyl-2′(phenylamino)-spiro [isobenzofuran-1(3H),9′-[9H]xanthen]-3-one (CAS No. 89331-94-2); a sensitizer comprising at least one or a combination of 1,1′-sulfonylbisbenzene (CAS No. 127-63-9) and dimethylterephthalate (CAS No. 120-61-6); and a coreactant (or developer) comprising at least one or a combination of bis(4-hydroxyphenyl)-4-methylpentane (CAS No. 6807-17-6) and 4-hydroxy-4′-isopropoxydiphenylsulfone (CAS No. 95235-30-6). Preferably, the print stock substrate will be coated with clay or the like to provide a smooth coating surface for the thermally-active layer.
    Type: Application
    Filed: March 28, 2001
    Publication date: December 5, 2002
    Inventors: Eugene V. Hoefs, Regina A. Kleinhenz