Patents by Inventor Ian Burn

Ian Burn 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).

  • Publication number: 20060287188
    Abstract: The present invention is directed to a dielectric thin film composition comprising: (1) one or more barium/titanium-containing selected from (a) barium titanate, (b) any composition that can form barium titanate during firing, and (c) mixtures thereof; dissolved in (2) organic medium; and wherein said thin film composition is doped with 0.002 to 0.05 atom percent of a manganese-containing additive.
    Type: Application
    Filed: June 21, 2005
    Publication date: December 21, 2006
    Inventors: William Borland, Ian Burn, Jon Ihlefeld, Jon-Paul Maria, Seigi Suh
  • Publication number: 20060229188
    Abstract: A dielectric ceramic composition in a multilayer ceramic capacitor having a composition of formula: ((CaO)t(SrO)1-t(ZrO2)v(TiO2)1-s-x-y-zAsExGyHz wherein: A is a transition metal oxide; E is an oxide of a group III or IV element; G is an oxide of a group II element; H is an oxide of a lanthanide; t is 0.50 to 0.90; v is 0.8 to 1.0; s is 0.0001 to 0.08; x is 0 to 0.08; y is 0 to 0.20; and z is 0 to 0.20.
    Type: Application
    Filed: November 14, 2005
    Publication date: October 12, 2006
    Inventors: Michael Randall, Corey Antoniades, Daniel Barber, Xilin Xu, James Beeson, Pascal Pinceloup, Abhijit Gurav, Tom Poole, Azizuddin Tajuddin, Ian Burn
  • Publication number: 20060169389
    Abstract: A method for forming a capacitor and capacitor formed thereby. The method comprises a) forming a capacitor precursor with green ceramic layers separated by conductive precursor layers wherein the conductive precursor layers have 30-80 wt % nickel precursor; up to 20 wt % grain growth inhibitor and 20-70 wt % organic vehicle; and b) heating the capacitor precursor to convert the green ceramic layers to ceramic dielectric layers and the conductive precursor layers to conductive layers.
    Type: Application
    Filed: January 31, 2005
    Publication date: August 3, 2006
    Inventors: Daniel Barber, Ian Burn, James Beeson, Azizuddin Tajuddin
  • Publication number: 20060171099
    Abstract: A method for forming a capacitor and capacitor formed thereby. The method comprises a) forming a capacitor precursor with green ceramic layers separated by conductive precursor layers wherein the conductive precursor layers have 30-80 wt % nickel precursor; up to 20 wt % grain growth inhibitor and 20-70 wt % organic vehicle; and b) heating the capacitor precursor to convert the green ceramic layers to ceramic dielectric layers and the conductive precursor layers to conductive layers.
    Type: Application
    Filed: February 22, 2006
    Publication date: August 3, 2006
    Inventors: Daniel Barber, Ian Burn, James Beeson, Azizuddin Tajuddin
  • Publication number: 20050011155
    Abstract: A composite panel comprising: a metal decking (1), optionally pre-coated with a decorative finish on its bottom surface a profiled metal top sheet (3) provided with a pre-laminated, waterproof, membranous layer on its top surface, an insulating layer (2) sandwiched between the top surface of the metal decking (1) and the bottom surface of the metal top sheet (3) and means (5, 7) for connecting the panel to a frame work (4) and/or another composite panel to form a substantially water resistant building or structure.
    Type: Application
    Filed: November 7, 2001
    Publication date: January 20, 2005
    Inventors: Christopher Ponting, Ian Burns
  • Publication number: 20040014588
    Abstract: The present invention provides a composition that can be sintered at a temperature of about 1025° C. or less to form an NPO dielectric ceramic. The composition according to the invention includes a mixture of from about 90% to about 99.5% by weight of a calcined (Ba, Ca, Sr, Nd, Gd)TiO3 main component and from about 0.5% to about 10% by weight of an additive component. The additive component includes a glass including by weight from about 45% to about 54% BaO, from about 19% to about 24% ZnO, from about 13% to about 20% B2O3, and from about 2% to about 23% SiO2.
    Type: Application
    Filed: July 19, 2002
    Publication date: January 22, 2004
    Inventors: Godefridus J.F.A. van Iersel, Michael Hausser, Ian Burn
  • Patent number: 5296426
    Abstract: A composition for forming a densified ceramic dielectric body, the composition consisting essentially of (a) about 96.0-98.0 wt. % barium titanate having an average particle size of 0.5-1.25 microns; (b) 0.3-1.2 wt. % niobium oxide or precursor thereof; (c) 0.4-1.2 wt. % zinc oxide or precursor thereof; (d) 0.1-1.2 wt. % neodymium oxide or precursor thereof; (e) 0.15-0.75 wt. % boron oxide or precursor thereof; and (f)0-0.1 wt. % manganese oxide or precursor thereof. This composition can be used to form the dielectric layers in multilayer electrical devices such as circuits and capacitors.
    Type: Grant
    Filed: July 20, 1992
    Date of Patent: March 22, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ian Burn
  • Patent number: 5238673
    Abstract: A composition consisting essentially of 60.0-70.0 mol % TiO.sub.2, 14.3-20.0 mol % Nd.sub.2 O.sub.3, 11.0-16.7 mol % BaO, 1.0-8.0 mol % ZrO.sub.2 and 0.05-0.30 mol % CeO.sub.2. This composition is useful for forming densified ceramic dielectric bodies having a dielectric constant of at least 65 and which meet COG specifications, and multilayer capacitors that contain such dielectric bodies.
    Type: Grant
    Filed: May 26, 1992
    Date of Patent: August 24, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Salvatore A. Bruno, Ian Burn
  • Patent number: 5155072
    Abstract: A composition comprising finely divided particles of modified barium titanate; and an admixture of calcium, titanium and manganese; the modified barium titanate particles containing Zr, Zn and Nb homogeneously distributed on an atomic scale throughout the particles according to the formula:BaTi.sub.1-(x+3y/2) (Zr.sub.x Zn.sub.y/2 Nb.sub.y) O.sub.3wherein x=0.01-0.20 and y=0.005-0.075. This composition forms a dielectric layer having a Curie Temperature below 25.degree. C., a dielectric constant of at least 10,000 and grain size of 5 microns or less and is useful in multilayer electrical devices such as circuits and capacitors.
    Type: Grant
    Filed: June 29, 1990
    Date of Patent: October 13, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Salvatore A. Bruno, Ian Burn
  • Patent number: 5116790
    Abstract: A composition consisting essentially of 60.0-70.0 mol % TiO.sub.2, 14.3-20.0 mol % Nd.sub.2 O.sub.3, 11.0-16.7 mol % BaO, 1.0-8.0 mol % ZrO.sub.2 and 0.05-0.30 mol % CeO.sub.2. This composition is useful for forming densified ceramic dielectric bodies having a dielectric constant of at least 65 and which meet COG specifications, and multilayer capacitors that contain such dielectric bodies.
    Type: Grant
    Filed: November 16, 1990
    Date of Patent: May 26, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Salvatore A. Bruno, Ian Burn
  • Patent number: 5106796
    Abstract: A low firing dielectric composition containing an admixture of finely divided particles of manganese doped-lead iron-tungsten niobate, barium titanate and optionally an inorganic sintering aid, dispersed in an organic medium. This composition is useful for forming capacitors.
    Type: Grant
    Filed: September 13, 1991
    Date of Patent: April 21, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Lorri Drozdyk, Ian Burn
  • Patent number: 5082810
    Abstract: An improved ceramic dielectric composition comprising a chemically homogeneous distribution of a mixture of additives on the surface of particles of ceramic powder, and to a method for enhancing the dielectric properties and sinterability of such compositions at low firing temperatures.
    Type: Grant
    Filed: February 28, 1990
    Date of Patent: January 21, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Horacio E. Bergna, Salvatore A. Bruno, Ian Burn
  • Patent number: 5011804
    Abstract: An improved ceramic dielectric composition for preparing multilayer ceramic structures for electronic devices and a method of enhancing the sinterability of such compositions at low firing temperatures by improving the distribution of zinc borate based sintering flux uniformly throughout the composition.
    Type: Grant
    Filed: February 28, 1990
    Date of Patent: April 30, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Horacio E. Bergna, Ian Burn
  • Patent number: 4935844
    Abstract: An alkali-free composition for making a ceramic dielectric body having a dielectric constant less than 5.0, which is a mixture of finely divided particles consisting essentially of 70-85% wt. slica and 15-30% wt. zinc borate flux. This composition can be used to make green tape and multilayer devices having internal copper conductors such as multilayer capacitors and multilayer interconnects.
    Type: Grant
    Filed: October 19, 1989
    Date of Patent: June 19, 1990
    Inventor: Ian Burn
  • Patent number: 4879261
    Abstract: An alkali-free composition for making a ceramic dielectric body having a dielectric constant less than 5.0, which is a mixture of finely divided particles consisting essentially of 70-85% wt. silica and 15-30% wt. zinc borate flux. This composition can be used to make green tape and multilayer devices having internal copper conductors such as multilayer capacitors and multilayer interconnects.
    Type: Grant
    Filed: August 23, 1988
    Date of Patent: November 7, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ian Burn
  • Patent number: 4855266
    Abstract: A dielectric composition is claimed consisting essentially of a donor- and acceptor-doped BaTiO.sub.3 having an intergranular phase of flux containing both glass-forming and glass-modifying ions. that can be co-fired in a low oxygen-containing atmosphere for the manufacture of multilayer capacitors having copper internal electrodes.
    Type: Grant
    Filed: February 18, 1988
    Date of Patent: August 8, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ian Burn
  • Patent number: 4845062
    Abstract: A composition for the preparation of low-firing dielectric layers comprising an admixture of finely divided particles of:(a) MgTiO.sub.3 ;(b) 0-10% wt., basis total solids, CaTiO.sub.3 ;(c) 5-10% wt., basis total solids, zinc borate frit in which the atomic ratio of zinc to boron is 1-3, the frit containing 0-5% wt., basis total solids, BaO, and in which up to 50 mol % of the B.sub.2 O.sub.3 is replaced by Al.sub.2 O.sub.3 ;(d) 0-5% wt., basis total solids, of a barium compound selected from BaCO.sub.3, BaTiO.sub.3 and mixtures thereof; and(e) an amount of a divalent metal oxide or precursor thereof selected from MgO, CaO, ZnO and mixtures thereof in an amount approximately molarly equivalent to the amount of BaTiO.sub.3 in the composition, the total amount of Ba in the composition, calculated as BaO, being 1-5% wt. of the total solids, the solids being free of Pb-, Bi- and Cd-containing compounds.
    Type: Grant
    Filed: October 19, 1987
    Date of Patent: July 4, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ian Burn
  • Patent number: 4766027
    Abstract: The method is directed to a method of forming a hermetic flux-sintered ceramic multilayer structure with internal copper conductor comprising:(a) forming at least one green ceramic layer comprised of a thermoplastic organic binder having dispersed therein a finely divided ceramic powder and a low melting flux;(b) forming on the surface of a first green ceramic layer a pattern of copper-based conductor paste comprised of fine copper powder, a non-cellulosic binder, and a solvent for the non-cellulosic binder which is a nonsolvent for the thermoplastic organic binder in the green ceramic layer;(c) laminating a second green ceramic layer on the surface of the first ceramic layer to sandwich the pattern therebetween;(d) heating the composite structure in an ambient gas comprising a dry buffered gas mixture whereby maintaining an oxygen partial pressure sufficient to remove the organics but not to oxidize the copper.
    Type: Grant
    Filed: January 13, 1987
    Date of Patent: August 23, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ian Burn
  • Patent number: 4640905
    Abstract: The invention is directed to barium titanate-based densified dielectric bodies corresponding to the formula(1-X)[(Ba.sub.1-x Pb.sub.x)(Ti.sub.1-(u+v) Zr.sub.u Sn.sub.v)O.sub.3 ]+X[A(Zn.sub.1/3 Nb.sub.2/3)O.sub.3 ]+Y[F],wherein A is selected from Pb, Ba and mixtures thereof.______________________________________ X = 2.5 to 11.5% by weight, Y = 1.0 to 5.0% by weight, u = 0 to 0.125, v = 0 to 0.125, x = 0 to 0.125, u + v = 0.015 to 0.125, ______________________________________F is a manganese-doped zinc borate flux.
    Type: Grant
    Filed: January 7, 1986
    Date of Patent: February 3, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ian Burn
  • Patent number: 4510175
    Abstract: A ceramic slurry or slip includes ceramic powder, an organic plasticizer and a resin binder combined in an aromatic hydrocarbon solvent and has a viscosity that is independent of shear rate. Monolithic ceramic capacitors having fewer pin holes are made by forming a falling sheet of this Newtonian slip, and repeatedly interrupting the falling curtain by passing a carrier through it to form layers of green ceramic. An electroding film is deposited on each green ceramic layer to form buried electrodes. The Newtonian slip is advantageously self leveling and contains relatively few pin holes that degrade capacitor performance.
    Type: Grant
    Filed: June 9, 1983
    Date of Patent: April 9, 1985
    Assignee: Sprague Electric Company
    Inventor: Ian Burn