Patents by Inventor Peter J. Gillies

Peter J. Gillies 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: 6742609
    Abstract: Apparatus is provided for introducing a consistent series of small and localized rotary impacts to a PDC bit during drilling, to improve PDC drill bit performance. Rotary impact supplements the nominal torque supplied by the rotary drive thereby avoiding lockup and potentially damaging energy storage in the drill string following windup, should the bit slow or hang up when drilling in difficult formations. The apparatus comprises a rotary hammer which is rotated about a bit shaft's anvil, preferably by a drilling fluid driven turbine. As the hammer rotates, potential energy is built up. When the hammer and anvil connect, the energy is released into the bit shaft and thus into the bit, increases its instantaneous torque and allows it to more effectively cut through difficult formations.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: June 1, 2004
    Assignee: United Diamond Ltd.
    Inventors: Peter J. Gillis, Ian G. Gillis, Craig J. Knull
  • Publication number: 20020166700
    Abstract: Apparatus is provided for introducing a consistent series of small and localized rotary impacts to a PDC bit during drilling, to improve PDC drill bit performance. Rotary impact supplements the nominal torque supplied by the rotary drive thereby avoiding lockup and potentially damaging energy storage in the drill string following windup, should the bit slow or hang up when drilling in difficult formations. The apparatus comprises a rotary hammer which is rotated about a bit shaft's anvil, preferably by a drilling fluid driven turbine. As the hammer rotates, potential energy is built up. When the hammer and anvil connect, the energy is released into the bit shaft and thus into the bit, increases its instantaneous torque and allows it to more effectively cut through difficult formations.
    Type: Application
    Filed: May 11, 2001
    Publication date: November 14, 2002
    Inventors: Peter J. Gillis, Ian G. Gillis, Craig J. Knull
  • Patent number: 5428041
    Abstract: Provided are bis-trifluoromethyl-substituted imidazolines as inhibitors of Acyl-CoA:Cholesterol Acyltransferase (ACAT), processes for their preparation, pharmaceutical compositions, and therapeutic methods for their use as antihypercholesterolemic or antiatherosclerotic agents.
    Type: Grant
    Filed: March 4, 1992
    Date of Patent: June 27, 1995
    Assignee: The Du Pont Merck Pharmaceutical Company
    Inventors: Jeffrey T. Billheimer, George A. Boswell, Jr., Indawati De Lucca, Spencer Drummond, Jr., Peter J. Gillies, James M. Trzaskos
  • Patent number: 5318984
    Abstract: Disclosed are compounds of the formula ##STR1## wherein R.sup.1 and R.sup.2 are selected independently from H, C.sub.1 -C.sub.8 unbranched alkyl, C.sub.3 -C.sub.8 branched alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.4 -C.sub.10 cycloalkylalkyl, C.sub.7 -C.sub.14 araalkyl, 2-, 3- or 4-pyridinyl, 2-thienyl, 2-furanyl, phenyl optionally substituted with 1 to 3 groups selected from F, Cl, Br, OH, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkyl, C.sub.3 -C.sub.8 branched alkyl, CH.sub.3 S(O).sub.r, NO.sub.2, CF.sub.3, or NR.sup.7 R.sup.8 ; or ##STR2## where L is O, O(CH.sub.2).sub.m+1 O, or (CH.sub.2).sub.m where m is 0-4; R.sup.3 is H, C.sub.1 -C.sub.6 alkyl, allyl, benzyl, or phenyl optionally substituted with F, Cl, CH.sub.3, CH.sub.3 O, or CF.sub.3 ;R.sup.4 is straight chain C.sub.1 -C.sub.8 alkyl optionally substituted with F; C.sub.3 -C.sub.8 branched alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.4 -C.sub.10 cycloalkylalkyl, C.sub.7 -C.sub.
    Type: Grant
    Filed: September 3, 1992
    Date of Patent: June 7, 1994
    Assignee: The Du Pont Merck Pharmaceutical Company
    Inventors: Jeffrey T. Billheimer, Peter J. Gillies, C. Anne Higley, Thomas P. Maduskuie, Jr., Ruth R. Wexler
  • Patent number: 5166214
    Abstract: This invention relates to imidazoles as inhibitors of acyl-CoA: cholesterol acyltransferase (ACAT), processes for their preparation, and their use as antihypercholesterolemic agents or antiatherosclerotic.The compounds for use in the described method are compounds of Formula (I): ##STR1## wherein R.sup.1 and R.sup.2 are selected independently from H, C.sub.1 -C.sub.8 alkyl, C.sub.3 -C.sub.8 branched alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.4 -C.sub.10 cycloalkylalkyl, C.sub.7 -C.sub.14 araalkyl, phenyl optionally substituted with 1 to 3 groups selected from F, Cl, Br, OH, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkyl, C.sub.3 -C.sub.8 branched alkyl, CH.sub.3 S(O).sub.r, NO.sub.2, CF.sub.3, or NR.sup.7 R.sup.8 ; R.sup.3 is H, C.sub.1 -C.sub.6 alkyl, allyl, benzyl, or phenyl optionally substituted with F, Cl, CH.sub.3, CH.sub.3 O, or CF.sub.3 ; R.sup.4 is straight chain C.sub.1 -C.sub.8 alkyl optionally substituted with F; C.sub.3 -C.sub.8 branched alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.4 -C.sub.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: November 24, 1992
    Assignee: Du Pont Merck Pharmaceutical Company
    Inventors: Jeffrey T. Billheimer, Peter J. Gillies, C. Anne Higley, Thomas P. Maduskuie, Jr., Ruth R. Wexler
  • Patent number: 4900744
    Abstract: Antihypercholesterolemic thioimidazoles of the formula ##STR1## or a pharmaceutical acceptable salt thereof, wherein R.sup.1 and R.sup.2 independently are H, F, Cl, CF.sub.3, alkyl of 1 to 4 carbon atoms, or alkoxy of 1 to 4 carbon atoms;A is alkylene of 7-20 carbon atoms or an alkenyl residue thereof with no more than 2 double bonds;R.sup.3 is H, CH.sub.3 or C.sub.2 H.sub.5 ; andn is 0, 1 or 2,are provided, such as 8-(4,5-diphenyl-1H-imidazol-2-ylthio)octanoic acid ethyl ester.
    Type: Grant
    Filed: September 14, 1988
    Date of Patent: February 13, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Jeffrey T. Billheimer, Peter J. Gillies, Wendell W. Wilkerson