Patents Assigned to Cookson Group PLC
  • Patent number: 6571956
    Abstract: A kit for an ear piercing cartridge includes a container having preferably a plurality of chambers or cells therein, in each of which is disposed a retaining assembly adapted to releasably receive an ear piercing cartridge. A portion of the retaining assembly is removable so that an ear piercing cartridge having different dimensions can be removably mounted in the same cell. The cassette has double sidewall construction to protect the cells which are hermetically sealed with a material sheet displaceable to access a particular one of the cells.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: June 3, 2003
    Assignee: Cookson Group PLC
    Inventor: Samuel J. Mann
  • Publication number: 20020084207
    Abstract: A kit for an ear piercing cartridge includes a container having preferably a plurality of chambers or cells therein, in each of which is disposed a retaining assembly adapted to releasably receive an ear piercing cartridge. A portion of the retaining assembly is removable so that an ear piercing cartridge having different dimensions can be removably mounted in the same cell. The cassette has double sidewall construction to protect the cells which are hermetically sealed with a material sheet displaceable to access a particular one of the cells.
    Type: Application
    Filed: December 28, 2000
    Publication date: July 4, 2002
    Applicant: COOKSON GROUP PLC
    Inventor: Samuel J. Mann
  • Patent number: 6158491
    Abstract: A process for the corrosion protection of copper or copper alloy which process comprises contacting the surface with an aqueous solution of at least one compound of general formula (I), wherein X is N, Y is CR and Z is N, or X is N, Y is N and Z is N or CR or X is CR, Y is N and Z is N, where R is a hydrogen atom or R.sup.1, and R.sup.1 is an alkyl, aryl, aralkyl, halogen, trihalomethyl, amino, heterocyclic, NHR.sup.2, NR.sup.3 R.sup.4, CN, CO.sub.2 H, CO.sub.2 R.sup.5, OH or OR.sup.6 group, where each of R.sup.2 to R.sup.6 independently represents an alkyl, aryl, or aralkyl group.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: December 12, 2000
    Assignee: Cookson Group PLC
    Inventors: John Reynolds, Andrew McIntosh Soutar, Keith William Peter White, Anthony Williams
  • Patent number: 6099545
    Abstract: A disposable ear piercing device includes a first disposable cartridge containing an earring head of a stud or straight post configuration. An inner slidable capsule and a slidable spacer within the capsule hold the decorative earring head and post within the cartridge. A second clutch cartridge spaced from the slidable capsule holds a closed end clutch. A spring biased plunger controlled by a trigger release actuates the slidable spacer and capsule within the first cartridge to project the earring head through the earlobe in an open saddle area. The clutch at the opposing saddle area receives and engages the earring stud or post. Release mechanisms on the capsule and clutch cartridge permit removal of the earlobe with the earring away from the instrument.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: August 8, 2000
    Assignee: Cookson Group PLC
    Inventors: Samuel J. Mann, Charles Kowalski
  • Patent number: 6048355
    Abstract: A disposable Ear Piercing device consists of an outer cartridge which is inserted into the piercing instrument. The outer cartridge contains a slideable inner capsule retaining an earring with a slideable spacer therein. By applying force to the instrument handle, an internal driving rod advances the inner capsule and slideable spacer forward, forcing the earring post through the ear and into a closed bottom retaining clutch. At such time, the earring is released from the inner capsule by spring arms which are integral with the spacer, opening hinged doors or door on the inner capsule, clearing the outer cartridge and allowing the earring and clutch to be released from the capsule onto the ear. The design of such inner capsule and spacer allows unsymmetrical decorative heads of varying thickness to be utilized.
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: April 11, 2000
    Assignee: Cookson Group PLC
    Inventors: Samuel J. Mann, Charles Kowalski
  • Patent number: 5858901
    Abstract: Barium titanate temperature stable dielectric compositions are disclosed containing magnesium oxide, silicon dioxide, germanium oxide and optionally an oxide or carbonate of barium, calcium or strontium which can be used to produce multilayer ceramic capacitors with nickel or nickel alloy electrode that have a variation of capacitance with temperature of less than .+-.10% over the range -55.degree. C. to +125.degree. C. compared with the value of the capacitance at 25.degree. C., or to produce multilayer ceramic capacitors with noble metal inner electrodes that have a variation of capacitance with temperature of less than .+-.15% over the range 55.degree. to +125.degree. C. compared with the value at 25.degree. C., and which does not contain any second phases after sintering.
    Type: Grant
    Filed: February 21, 1996
    Date of Patent: January 12, 1999
    Assignee: Cookson Group plc
    Inventors: Mike Ssu Hai Chu, John Bultitude, Christopher Hood, Kay Louise Nimmo, Michael Rand
  • Patent number: 5776555
    Abstract: A process for the metallization of a phosphor screen which process comprises the steps of: i)applying to a process screen a coating composition comprising a poly(acrylate) or poky(methacrylate) dissolved in an acrylate or methacrylate monomer, the said composition including an initiator therein; ii) subjecting the coated to irradiation in order to form a polymeric film coating, iii)depositing a layer of metal upon the coated screen to form a composite; and iv) heating the composite to a temperature above the decomposition temperature of the film coating in order to decompose and/or volatilize the polymeric film coating.
    Type: Grant
    Filed: May 29, 1997
    Date of Patent: July 7, 1998
    Assignee: Cookson Group PLC
    Inventors: Alison Mary Wagland, Karen Savill, Warren Li, Jason Robert Brewer, Brian John Collister
  • Patent number: 5656143
    Abstract: A solid electrolyte sensor to measuring the amount of trace elements, such as sulfur, in molten metals such as steel is provided wherein zirconia toughened strontium .beta.-alumina is used as the solid electrolyte. The resulting sensor is highly resistant to thermal shock, and is suitable for use with molten metals at temperatures of 1350.degree. C. or higher.
    Type: Grant
    Filed: September 21, 1995
    Date of Patent: August 12, 1997
    Assignee: Cookson Group PLC
    Inventors: Mark Andrew Swetnam, Lyn Holt, Stefan Ryszard Witek
  • Patent number: 5412062
    Abstract: Thermally depolymerizable polyoxalate and polymalonate polymers which contain hydrocarbon groups having from 6 to 30 carbon atoms and a tertiary carbon atom attached to at least one of the bridging oxygen atoms in the structure are usable as binders for powdered glass ceramic or metallic materials, and as rheological control agents in paste formulations.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: May 2, 1995
    Assignee: Cookson Group plc
    Inventors: Gerald A. Power, Alison M. Wagland, Andrew C. Mackie
  • Patent number: 5382865
    Abstract: A composite multilayer ceramic structure which comprises in a single device a plurality of layers of an electrostrictive dielectric material separated by a plurality of electrode layers in which a first portion is adapted to operate as an electrostrictive actuator and a second portion, which is adjacent to the first portion and which is not inherently piezoelectric, is adapted to operate in the same way as a piezoelectric sensor.
    Type: Grant
    Filed: March 26, 1993
    Date of Patent: January 17, 1995
    Assignee: Cookson Group PLC
    Inventors: Steven J. Butcher, James D. Hobby, David H. M. Kings
  • Patent number: 5382299
    Abstract: A soldering flux composition includes an aqueous solution containing as component (A) a compound selected from (i) hydrohalides and hydrophosphates of guanidine and substituted guanidines, (ii) hydrohalides and hydrophosphates of a five-membered nitrogen containing heterocyclic amine of the formulaC.sub.x N.sub.y H.sub.3in which x is 1 or 2 and y is 4 or 5, and mixtures of (i) and (ii) and as component (B) at least one compound selected from hydrohalides and hydrophosphates of aliphatic amines selected from aliphatic monoamines of formula CH.sub.3 (CH.sub.2).sub.n NR.sub.2 and aliphatic diamines of formula R.sub.2 N(CH.sub.2).sub.m NR.sub.2 in which n is 0 to 10, m is 5 to 10 and R is hydrogen, methyl, ethyl, propyl or butyl, the components (A) and (B) being present in the relative proportions of 25 to 100% by weight of (A) and 75 to 0% of (B).
    Type: Grant
    Filed: January 28, 1994
    Date of Patent: January 17, 1995
    Assignee: Cookson Group PLC
    Inventors: Dosten Baluch, Anthony E. Ingham
  • Patent number: 5350440
    Abstract: A furnace (1) has a main holding (2) and a charging well (4) into which molten metal from the holding portion is circulated by means of an electromagnetic pump (7). Metal enters the well as a tangential flow and a stationary turbulator (10) is located in the path of the flow so as to upwardly and transversely deflect the flow. Resulting turbulence within the well enhances the rate of assimilation of solids into the melt without resulting in excessive oxidation. The method is suitable for melting aluminium swarf.
    Type: Grant
    Filed: August 16, 1993
    Date of Patent: September 27, 1994
    Assignee: Cookson Group PLC
    Inventors: Anil Katyal, Warwick N. Brown, Roger Howitt
  • Patent number: 5308803
    Abstract: A glass composition which is essentially free from lead and cadium comprises, in mole percent, SiO.sub.2 :35 to 75%, Bi.sub.2 O3:0.1 to 15%, Al.sub.2 O.sub.3 :0.1 to 10%, B.sub.2 O.sub.3 :1 to 30%, at least one of Li.sub.2 O, Na.sub.2 O, K.sub.2 O:5 to 30%, ZrO.sub.2 :0.1 to 10%, and certain other optional ingredients, with the proviso that BaO and ZnO are not contained in an amount of more than 2 mole percent. These glass compositions can be used as fluxes for mixing with pigments to provide compositions for the decoration of ceramic materials and/or glass.
    Type: Grant
    Filed: June 10, 1992
    Date of Patent: May 3, 1994
    Assignee: Cookson Group PLC
    Inventors: John F. Clifford, Ivan Wozniak, Peter J. Smith
  • Patent number: 5304516
    Abstract: Glaze composition comprises 45 to 75% of SioO.sub.2, 0.1 to below 5% of Bi.sub.2 O.sub.3, 0.1 to 20% of Al.sub.2 O.sub.3 to 20% of B.sub.2 O.sub.3, at least one of CaO, MgO, SrO, BaO or Zno in an amount of 2 to 22%, at least one of Li.sub.2 O, Na.sub.2 O, K.sub.2 O in an amount of 1 to 10%, at least one of La.sub.2 O.sub.3, MoO.sub.3 or WO.sub.3 in an amount of 0.1 to 10% and certain other optional ingredients, all percentages being percentages by weight based on the total weight of the glaze composition, the glaze composition having a firing temperature of 950.degree. to 1250.degree. C., and having a coefficient of thermal expansion of 50 to 100.times.10.sup.-7 /.degree.C.
    Type: Grant
    Filed: April 16, 1992
    Date of Patent: April 19, 1994
    Assignee: Cookson Group PLC
    Inventor: John F. Clifford
  • Patent number: 5244848
    Abstract: Glaze composition for use on bone china and fine china which is essentially free from lead and cadium comprises, by weight, SiO.sub.2 : 35 to 60%, Bi.sub.2 O.sub.3 : 5 to 45%, Al.sub.2 O.sub.3 :5 to 20%, B.sub.2 O.sub.3 : 1 to 15%, at least one of CaO, MgO, SrO or BaO: 2 to 20%, at least one of Li.sub.2 O, Na.sub.2 O, K.sub.2 O: 1 to 10%, and certain other optional ingredients, with the proviso that BaO is not contained in an amount of more than 2% by weight.
    Type: Grant
    Filed: January 13, 1993
    Date of Patent: September 14, 1993
    Assignee: Cookson Group PLC
    Inventors: John F. Clifford, Ivan Wozniak
  • Patent number: 5225110
    Abstract: Material which is coated with a coating of an inherently conductive polymeric material. Suitable conductive polymeric materials include polypyrrole, substituted polypyrrole, polyaniline and substituted polyanilines.The coated powdery or granular metallic material may be used as an EMI and/or RFI shielding material.
    Type: Grant
    Filed: June 8, 1990
    Date of Patent: July 6, 1993
    Assignee: Cookson Group plc
    Inventor: Poopathy Kathirgamanathan
  • Patent number: 5223033
    Abstract: In a paste for use in the electronics industry which comprises:i) a non aqueous vehicle; andii) a particulate filler material, the improvement which comprises the vehicle being a stable emulsion of at least two immiscible organic liquids of at least 50% by volume disperse phase, one of which liquids is selected from the group consisting of a polar solvent and a mixture of polar solvents, and the other of which liquids is selected from the group consisting of an aliphatic hydrocarbon and a mixture of aliphatic hydrocarbons and the paste, when heated to remove the vehicle therefrom yields less than 3.0% by weight of organic residues based on the weight of the paste.
    Type: Grant
    Filed: April 27, 1992
    Date of Patent: June 29, 1993
    Assignee: Cookson Group PLC
    Inventors: Charles E. King, Andrew C. Mackie, Geoffrey A. Paterson
  • Patent number: D442689
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: May 22, 2001
    Assignee: Cookson Group PLC
    Inventor: Samuel J. Mann
  • Patent number: D448154
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: September 25, 2001
    Assignee: Cookson Group PLC
    Inventor: Samuel J. Mann
  • Patent number: D450383
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: November 13, 2001
    Assignee: Cookson Group PLC
    Inventor: Samuel J. Mann