Patents by Inventor Josef Francel

Josef Francel 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).

  • Patent number: 6220055
    Abstract: A composite glass article having a chemically modified ceramic surface whose coefficient of thermal expansion is lower than that of the glass substrate is produced by exposing the glass article maintained at a temperature above its annealing point (typically 500° C.) and below its softening point (soda-lime about 725° C.; borosilicate about 800° C.) to an atmosphere containing prescribed metalorganic compounds. The chemically modified ceramic surface in maintained in compression and is a ceramic consisting of members from a specific group of oxides dependent upon the type of glass comprising the substrate. The method for forming the glass composite article includes applying the metalorganic mixture while the glass substrate is maintained at a temperature above its annealing point (typically 500° C.) and below its softening point (soda-lime about 725° C.; borosilicate about 800° C.) to an atmosphere containing prescribed metalorganic compounds.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: April 24, 2001
    Inventors: Josef Francel, Charles P. Duck
  • Patent number: 5910371
    Abstract: A composite glass article having a chemically modified ceramic surface whose coefficient of thermal expansion is lower than that of the glass substrate is produced by exposing the glass article maintained at a temperature above its annealing point (typically 500.degree. C.) and below its softening point (soda-lime about 725.degree. C.; borosilicate about 800.degree. C.) to an atmosphere containing prescribed metalorganic compounds. The chemically modified ceramic surface in maintained in compression and is a ceramic consisting of members from a specific group of oxides dependent upon the type of glass comprising the substrate. The method for forming the glass composite article includes applying the metalorganic mixture while the glass substrate is maintained at a temperature above its annealing point (typically 500.degree. C.) and below its softening point (sodalime about 725.degree. C.; borosilicate about 800.degree. C.) to an atmosphere containing prescribed metalorganic compounds.
    Type: Grant
    Filed: February 13, 1997
    Date of Patent: June 8, 1999
    Inventors: Josef Francel, Charles P. Duck
  • Patent number: 4554258
    Abstract: Glass frit compositions for use in glazes or enamels have a fiber softening point of 535.degree. C. or more and are free of cadmium, lead and arsenic and consist essentially of Bi.sub.2 O.sub.3 --B.sub.2 O.sub.3 --SiO.sub.2 with R.sub.2 O being 2-8% and RO being 0-9% by weight.
    Type: Grant
    Filed: June 28, 1984
    Date of Patent: November 19, 1985
    Assignee: Owens-Illinois, Inc.
    Inventor: Josef Francel
  • Patent number: 4537862
    Abstract: Glass frit compositions are shown that are lead-free, cadmium-free, and zinc-free, the compositions having improved chemical resistance, especially acid resistance (acetic acid) of a loss of generally less than about 1.9% by weight. The compositions contain B.sub.2 O.sub.3, SiO.sub.2, ZrO.sub.2 and rare earth oxides, the weight ratio of ZrO.sub.2 to rare earth oxides being critical and being about 1/1 to 1.4/1.
    Type: Grant
    Filed: April 27, 1984
    Date of Patent: August 27, 1985
    Assignee: Owens-Illinois, Inc.
    Inventors: Josef Francel, Uriah Horn, Daniel R. Stewart
  • Patent number: 4446241
    Abstract: Glass frits for use in glazes or enamels have fiber softening point about 535.degree.-609.degree. C. are free of lead, cadmium and zinc and consist essentially of Li.sub.2 O-B.sub.2 O.sub.3 -SiO.sub.3 plus 2-23% SnO.sub.2 +CaO and 2-23% ZrO.sub.2 +La.sub.2 O.sub.3 ; also, Al.sub.2 O.sub.3, SrO, BaO, Na.sub.2 O, F.Low expansion filler, e.g., B-eucryptite, may be used at 4 to 15% by weight of glass frit.
    Type: Grant
    Filed: June 28, 1982
    Date of Patent: May 1, 1984
    Assignee: Owens-Illinois, Inc.
    Inventors: Josef Francel, Daniel R. Stewart, Uriah Horn
  • Patent number: 4120678
    Abstract: A sealing glass and a sealing glass paste for sealing the face plate and funnel portion of a color television tube wherein PbO-containing sealing glass frit contains from an effective amount of a powder, such as Pb.sub.3 O.sub.4 powder, which powder prevents the reduction of PbO to Pb metal during the sealing process, which reduction would otherwise result in a dielectric breakdown in the seal. A sealing glass paste consisting essentially of a PbO--B.sub.2 O.sub.3 --ZnO sealing glass frit and containing an effective amount of said powder, based upon the weight of the frit, together with hydroxypropyl cellulose binder for the frit and a solvent for the binder. A method for sealing the face plate of a color television tube to its funnel portion with a PbO-containing solder glass wherein the reduction of PbO to metallic lead during the sealing step is obviated by the addition of a sufficient amount of Pb.sub.3 O.sub.4 or BaO.sub.2 powder in the solder glass and paste made therewith, which Pb.sub.3 O.sub.
    Type: Grant
    Filed: June 27, 1977
    Date of Patent: October 17, 1978
    Assignee: Owens-Illinois, Inc.
    Inventors: Josef Francel, James E. King, John M. Woulbroun
  • Patent number: 4099977
    Abstract: A sealing glass and a sealing glass paste for sealing the face plate and funnel portion of a color television tube wherein PbO-containing sealing glass frit contains from an effective amount of a powder, such as Pb.sub.3 O.sub.4 powder, which powder prevents the reduction of PbO to Pb metal during the sealing process, which reduction would otherwise result in a dielectric breakdown in the seal. A sealing glass paste consisting essentially of a PbO-B.sub.2 O.sub.3 -ZnO sealing glass frit and containing an effective amount of said powder, based upon the weight of the frit, together with hydroxypropyl cellulose binder for the frit and a solvent for the binder. A method for sealing the face plate of a color television tube to its funnel portion with a PbO-containing solder glass wherein the reduction of PbO to metallic lead during the sealing step is obviated by the addition of a sufficient amount of Pb.sub.3 O.sub.4 or BaO.sub.2 powder in the solder glass and paste made therewith, which Pb.sub.3 O.sub.4 or BaO.
    Type: Grant
    Filed: June 27, 1977
    Date of Patent: July 11, 1978
    Assignee: Owens-Illinois, Inc.
    Inventors: Josef Francel, James E. King, John M. Woulbroun
  • Patent number: 4098611
    Abstract: A sealing glass and a sealing glass paste for sealing the face plate and funnel portion of a color television tube wherein PbO-containing sealing glass frit contains from an effective amount of a powder, such as Pb.sub.3 O.sub.4 powder, which powder prevents the reduction of PbO to Pb metal during the sealing process, which reduction would otherwise result in a dielectric breakdown in the seal. A sealing glass paste consisting essentially of a PbO-B.sub.2 O.sub.3 -ZnO sealing glass frit and containing an effective amount of said powder, based upon the weight of the frit, together with hydroxypropyl cellulose binder for the frit and a solvent for the binder. A method for sealing the face plate of a color television tube to its funnel portion with a PbO-containing solder glass wherein the reduction of PbO to metallic lead during the sealing step is obviated by the addition of a sufficient amount of Pb.sub.3 O.sub.4 or BaO.sub.2 powder in the solder glass and paste made therewith, which Pb.sub.3 O.sub.4 or BaO.
    Type: Grant
    Filed: June 27, 1977
    Date of Patent: July 4, 1978
    Assignee: Owens-Illinois, Inc.
    Inventors: Josef Francel, James E. King, John M. Woulbroun
  • Patent number: 4038091
    Abstract: A sealing glass and a sealing glass paste for sealing the face plate and funnel portion of a color television tube wherein PbO-containing sealing glass frit contains from an effective amount of a powder, such as Pb.sub.3 O.sub.4 powder, which powder prevents the reduction of PbO to Pb metal during the sealing process, which reduction would otherwise result in a dielectric breakdown in the seal. A sealing glass paste consisting essentially of a PbO-B.sub.2 O.sub.3 -ZnO sealing glass frit and containing an effective amount of said powder, based upon the weight of the frit, together with hydroxypropyl cellulose binder for the frit and a solvent for the binder. A method for sealing the face plate of a color television tube to its funnel portion with a PbO-containing solder glass wherein the reduction of PbO to metallic lead during the sealing step is obviated by the addition of a sufficient amount of Pb.sub.3 O.sub.4 or BaO.sub.2 powder in the solder glass and paste made therewith, which Pb.sub.3 O.sub.4 or BaO.
    Type: Grant
    Filed: December 3, 1975
    Date of Patent: July 26, 1977
    Assignee: Owens-Illinois, Inc.
    Inventors: Josef Francel, James E. King, John M. Woulbroun
  • Patent number: 4018717
    Abstract: Internal arcing in a cathode ray tube is substantially prevented by coating a portion of the interior of the funnel and neck of the tube with an electrically conductive composition, and coating a portion of the interior of the funnel and neck of the tube with an electrically resistive composition. The electrically conductive composition comprises about 10-30 weight percent iron and about 90-70 weight percent of a glass frit. The electrically resistive composition comprises about 8-24 weight percent iron, about 2-8 weight percent TiO.sub.2 and about 90-68 weight percent glass frit. The use of conventional "dag" coatings is eliminated. The cathode ray tube is especially useful as a picture tube in a color television receiver in which high operating voltages are employed.
    Type: Grant
    Filed: September 29, 1975
    Date of Patent: April 19, 1977
    Assignee: Owens-Illinois, Inc.
    Inventors: Josef Francel, Galen D. Lemke
  • Patent number: 3973975
    Abstract: A sealing glass and a sealing glass paste for sealing the face plate and funnel portion of a color television tube wherein PbO-containing sealing glass frit contains an effective amount of a powder, such as Pb.sub.3 O.sub.4 powder, which powder prevents the reduction of PbO to Pb metal during the sealing process, which reduction would otherwise result in a dielectric breakdown in the seal. Among other powders similarly found to be effective for the purpose of prevention of reduction of PbO in a PbO-containing sealing glass frit are certain other higher oxides of a cation which are selected from a group including, in addition to Pb.sub.3 O.sub.4, such higher oxides of a cation as BaO.sub.2, CrO.sub.3, MnO.sub.2, Mn.sub.2 O.sub.3, Fe.sub.2 O.sub.3, Fe.sub.3 O.sub.4, CuO, Cu.sub.2 O, Tl.sub.2 O.sub.3, Sb.sub.2 O.sub.5, TeO.sub.2, Ta.sub.2 O.sub.5, Nb.sub.2 O.sub.5, V.sub.2 O.sub.5, CeO.sub.2, Bi.sub.2 O.sub.3 and As.sub.2 O.sub.5. A sealing glass paste consisting essentially of a PbO-- B.sub.2 O.sub.
    Type: Grant
    Filed: October 22, 1974
    Date of Patent: August 10, 1976
    Assignee: Owens-Illinois, Inc.
    Inventors: Josef Francel, James E. King, John M. Woulbroun
  • Patent number: 3967973
    Abstract: Sealing glass paste for sealing the face plate and funnel portion of a color television tube wherein PbO-containing sealing glass frit contains from at least 0.1 to 1.5% by weight of Pb.sub.3 O.sub.4 powder, which powder prevents the reduction of PbO to Pb metal during the sealing process, which reduction would otherwise result in a dielectric breakdown in the seal. A sealing glass paste consisting essentially of a PbO--B.sub.2 O.sub.3 --ZnO sealing glass frit and containing from at least 0.1 to 1.5% by weight of Pb.sub.3 O.sub.4 powder, based upon the weight of the frit, together with hydroxypropyl cellulose binder for the frit and a solvent for the binder. A method for sealing the face plate of a color television tube to its funnel portion with a PbO-containing solder glass wherein the reduction of PbO to metallic lead during the sealing step is obviated by the addition of a sufficient amount of Pb.sub.3 O.sub.4 powder in the solder glass and paste made therewith, which Pb.sub.3 O.sub.
    Type: Grant
    Filed: October 2, 1974
    Date of Patent: July 6, 1976
    Assignee: Owens-Illinois, Inc.
    Inventors: Josef Francel, James E. King, John M. Woulbroun
  • Patent number: 3954486
    Abstract: Disclosed is a physical blend of particulate lead borate sealing glass and particulate refractory filler for use in forming thermal fusion seals for workpieces having a lower coefficient of thermal expansion than the sealing glass. The particulate refractory filler has a particle size diameter in excess of about 37 microns (i.e. plus 400 U.S. Sieve) to lower the expansion while maintaining adequate flow during fusion. The blend is especially useful as a package sealant for electronic components.
    Type: Grant
    Filed: July 30, 1974
    Date of Patent: May 4, 1976
    Assignee: Owens-Illinois, Inc.
    Inventors: Josef Francel, Robert F. Palermo