Patents by Inventor John Ewen

John Ewen 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: 7874081
    Abstract: A method of filling a drying system 24 with product comprises providing a washing unit 22, and a drier or driers 26a, 26b arranged such that one at a time the driers 26a, 26b receive product 48 discharged from the output of the washing unit 22. The washing unit 22 is configured to receive product 48 which is continuously weighed 104 as it is delivered to the washing unit. The product is washed in the washing unit 22 by being passed through the washing unit at a substantially constant speed, allowing the arrival time at the drier 26a, 26b to be predicted. The weight of product loaded into the drier is regulated by controlling the flow of product into the drier.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: January 25, 2011
    Assignee: Key Technology, Inc.
    Inventor: Philip John Ewen
  • Patent number: 7723450
    Abstract: The present invention relates to organometallic transition metal compounds of the formula (I) Z1AnZ2MXm??(I) where Z1 is a coordinating group which comprises a six-?-electron central group which coordinates directly to M, A is a divalent bridge between the groups Z1 and Z2, Z2 is a coordinating group having the same meaning as Z1 or is a group comprising an open pentadienyl, a cyclopentadienyl-containing group or a heterocyclic, 5- or 6-membered group containing six ? electrons, n=zero or 1, M is an element of group 3, 4, 5 or 6 of the Periodic Table of the Elements, the radicals X are identical or different and are each an organic or inorganic radical, m is 0, 1 or 2, and at least one of the three molecule fragments Z1, Z2 and A bears a monovalent organic radical.
    Type: Grant
    Filed: June 2, 2005
    Date of Patent: May 25, 2010
    Assignee: Basell Polyolefine GmbH
    Inventors: Robert L. Jones, Michael J. Elder, Jennifer Kipke, Alexander Koeppl, Markus Schopf, John Ewen
  • Publication number: 20090286945
    Abstract: A new class of heterocyclic metallocenes, a catalytic system containing them and a process for polymerizing addition polymerizable monomers using the catalytic system are disclosed; the heterocyclic metallocenes correspond to the formula (I): YjR?iZjjMeQkPl wherein Y is a coordinating group containing a six ? electron central radical directly coordinating Me, to which are associated one or more radicals containing at least one non-carbon atom selected from B, N, O, Al, Si, P, S, Ga, Ge, As, Se, In, Sn, Sb and Te; R? is a divalent bridge between the Y and Z groups; Z is a coordinating group, optionally being equal to Y; Me is a transition metal; Q is halogen or hydrocarbon substituents; P is a counterion; i is 0 or 1; j is 1-3; jj is 0-2; k is 1-3; and l is 0-2.
    Type: Application
    Filed: June 28, 2007
    Publication date: November 19, 2009
    Inventors: John Ewen, Michael Elder, Robert Jones
  • Publication number: 20080090978
    Abstract: A new class of heterocyclic metallocenes, a catalytic system containing them and a process for polymerizing addition polymerizable monomers using the catalytic system are disclosed; the heterocyclic metallocenes correspond to the formula (I): YjR?iZjjMeQkPl wherein Y is a coordinating group containing a six ? electron central radical directly coordinating Me, to which are associated one or more radicals containing at least one non-carbon atom selected from B, N, O, Al, Si, P, S, Ga, Ge, As, Se, In, Sn, Sb and Te; R? is a divalent bridge between the Y and Z groups; Z is a coordinating group, optionally being equal to Y; Me is a transition metal; Q is halogen or hydrocarbon substituents; P is a counterion; i is 0 or 1; j is 1-3; jj is 0-2; k is 1-3; and l is 0-2.
    Type: Application
    Filed: June 28, 2007
    Publication date: April 17, 2008
    Inventors: John Ewen, Michael Elder, Robert Jones
  • Publication number: 20070260023
    Abstract: The present invention relates to organometallic transition metal compounds of the formula (I) Z1AnZ2MXm??(I) where Z1 is a coordinating group which comprises a six-?-electron central group which coordinates directly to M, A is a divalent bridge between the groups Z1 and Z2, Z2 is a coordinating group having the same meaning as Z1 or is a group comprising an open pentadienyl, a cyclopentadienyl-containing group or a heterocyclic, 5- or 6-membered group containing six ? electrons, n=zero or 1, M is an element of group 3, 4, 5 or 6 of the Periodic Table of the Elements, the radicals X are identical or different and are each an organic or inorganic radical, m is 0, 1 or 2, and at least one of the three molecule fragments Z1, Z2 and A bears a monovalent organic radical.
    Type: Application
    Filed: June 2, 2005
    Publication date: November 8, 2007
    Applicant: Basell Polyolefine GmbH
    Inventors: Robert Jones, Michael Elder, Jennifer Kipke, Alexander Koeppl, Markus Schopf, John Ewen
  • Publication number: 20070260025
    Abstract: The present invention relates to organometallic transition metal compounds of the formula (I) M1 is a metal of group 3, 4, 5 or 6 of the Periodic Table of the Elements or the lanthanicles, X are identical or different and are each an organic or inorganic radical, where two radicals X can also be joined to one another, n is a natural number from 1 to 4, T1, T2 are identical or different and are each a divalent group selected from the group consisting of —O—, —S—, —Se—, —Te—, —N(R13)_?—P(R13)—, —As(R13)—, Sb(R13)—, —Si(R13)2-, —C(R13 R14)—C(R13 R15)— and —C(R14)?C(R15)—, where R13, R14 and R15 are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms, R1, R7 are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms, R2 R8 are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms, R3 R9 are identical or different and are each halogen or an organic radical having from 1 to 40 c
    Type: Application
    Filed: November 2, 2004
    Publication date: November 8, 2007
    Applicant: Basell Polyolefine GmbH
    Inventors: Michael Elder, Robert Jones, John Ewen
  • Publication number: 20060100092
    Abstract: The present invention relates to catalyst systems for preparing isotactic polyolefins obtainable by reacting at least one chiral transition metal compound and at least one cocatalyst which is able to convert the chiral transition metal compound into a cation, where the chiral transition metal compound contains two bidentate chelating ligands connected to one another via a bridge and, if desired, one or two further monodentate ligands, with the four coordinating atoms of the two chelating ligands being in an approximately planar arrangement around the transition metal ion and up to two further ligands being located above and below this approximately planar coordination sphere formed by the four coordinating atoms of the two chelating ligands and, in the case of two such further ligands, these being in the trans position relative to one another, to the use of the catalyst systems of the present invention for preparing polyolefins, to a process for preparing polyolefins by polymerization or copolymerization of a
    Type: Application
    Filed: February 5, 2004
    Publication date: May 11, 2006
    Applicant: Basell Polyolefine GmbH
    Inventors: Robert Jones, Naka Seidel, Michael Elder, John Ewen
  • Publication number: 20050192418
    Abstract: A new class of heterocyclic metallocenes, a catalytic system containing them and a process for polymerizing addition polymerizable monomers using said catalytic system are disclosed; the heterocyclic metallocenes correspond to the formula (I): YjR?iZjjMeQkPl wherein Y is a coordinating group containing a six ? electron central radical directly coordinatng Me, to which are associated one or more radicals containing at least one non-carbon atom selected from B, N, O, Al, Si, P, S, Ga, Ge, As, Se, In, Sn, Sb and Te; R? is a divalent bridge between the Y and Z groups; Z is a coordinating group, optionally being equal to Y; Me is a transition metal; Q is halogen or hydrocarbon substituents; P is a counterion; i os 0 or 1; j is 1-3; jj is 0-2; k is 1-3; and l is 0-2.
    Type: Application
    Filed: March 24, 2003
    Publication date: September 1, 2005
    Inventors: John Ewen, Michael Elder, Robert Jones, Yuri Bubitsky
  • Publication number: 20050165184
    Abstract: The present invention provides a method for varying the melting points and molecular weights of polyolefins by changing the structure of the catalyst used in the polymerization. The catalysts that are useful in the present invention are chiral, stereorigid metallocene catalyst of the formula R?(C5R?m)2MeQ. The catalysts include a bridge structure between the (C5R?m) groups and may contain substituents on the groups. It has been discovered that the melting points and molecular weights of the polymers produced by such catalysts are influenced by the bridge and substituents added to the (C5R?m) groups. Thus, the present invention provides a method for varying the melting points of the polymer product and a method of varying the molecular weights of the product by changing the components and structure of the metallocene catalysts. The present invention also provides a process for polymerizing olefins in which the melting points and/or molecular weights of the product may be controlled.
    Type: Application
    Filed: March 21, 2005
    Publication date: July 28, 2005
    Inventor: John Ewen
  • Patent number: 6600441
    Abstract: A radar detector for exploration of subsurface embedded objects comprising an antenna array (1) for high-frequency electromagnetic waves, which is connected and individually switchable with at least one transmit/receive unit, a time-controlled signal processor, an evaluation device for SAR and a display device. The antenna array (1) exhibiting at least three antennas (sx, rx, sy, ry) scanning an area by their positioning.
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: July 29, 2003
    Assignee: Hilti Aktiengesellschaft
    Inventors: Stefan Liedtke, Harald Schmitzer, John Ewen, Klaus Dass
  • Publication number: 20020044078
    Abstract: A radar detector for exploration of subsurface embedded objects comprising an antenna array (1) for high-frequency electromagnetic waves, which is connected and individually switchable with at least one transmit/receive unit, a time-controlled signal processor, an evaluation device for SAR and a display device. The antenna array (1) exhibiting at least three antennas (sx, rx, sy, ry) scamiing an area by their positioning.
    Type: Application
    Filed: October 9, 2001
    Publication date: April 18, 2002
    Inventors: Stefan Liedtke, Harald Schmitzer, John Ewen, Klaus Dass