Patents by Inventor David L. Davies
David L. Davies 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).
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Patent number: 7196221Abstract: Ionic compounds having a freezing point of no more than 50° C., formed by the reaction of at least one amine salt of the formula R1R2R3R4N+X? (I) with at least one hydrated salt, which is a chloride, nitrate, sulphate or acetate of Li, Mg, Ca, Cr, Mn, Fe, Co, Ni, Cu, Zn, Cd, Pb, Bi, La or Ce; wherein R1, R2 and R3 are each independently a C1 to C5 alkyl or a C6 to C10 cycloalkyl group, or wherein R2 and R3 taken together represent a C4 to C10 alkylene group, thereby forming with the N atom of formula (I) a 5 to 11 membered heterocyclic ring, and wherein R4 is hydrogen, or phenyl, or C1 to C12 alkyl or cycloalkyl group, optionally substituted with at least one group selected from OH, Cl, Br, F, I, phenyl, NH2, CN, NO2, COOR5, CHO, COR5 and OR5, wherein R5 is a C1 to C10 alkyl or cycloalkyl group, and X? is an anion capable of being complexed by the said hydrated salt.Type: GrantFiled: September 26, 2001Date of Patent: March 27, 2007Assignee: Scionix LimitedInventors: Andrew P. Abbott, David L. Davies, Glen Capper, Raymond K. Rasheed, Vasuki Tambyrajah
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Patent number: 7183433Abstract: Ionic compounds with a freezing point of up to 100° C. are formed by the reaction of an one amine salt of formula (I) R1R2R3R4N+X?, such as choline chloride with an organic compound (II) capable of forming a hydrogen bond with X; such as urea, wherein the molar ration of I to II is from 1:1.5 to 1:2.5. R1, R2, R3 and R4 may be H, optionally substituted C1 to C5 alkyl, optionally substituted C6 to C10 cycloalkyl, optionally substituted C6 to C12 aryl, optionally substituted C7 to C12 alkaryl, or R1 and R2 taken together may represent a C4 to C10 optionally substituted alkylene group, thereby forming with the N atom of formula I a 5 to 11-membered heterocyclic ring and all of R1, R2, R3 and R4 are not identical, X? may be NO3?, F, Cl?, Br?, I?, BF4?, ClO4?, CN?, SO3CF3?, or COOCF3?. The ionic compounds are useful as solvents, and electrolytes for example in electroplating, electrowinning, and electropolishing, and as catalysts.Type: GrantFiled: September 26, 2001Date of Patent: February 27, 2007Assignee: Scionix LimitedInventors: Andrew P. Abbott, David L. Davies, Glen Capper, Raymond K. Rasheed, Vasuki Tambyrajah
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Publication number: 20040097755Abstract: Ionic compounds with a freezing point of up to 100° C. are formed by the reaction of an one amine salt of formula (I) R1R2R3R4N+X−, such as choline chloride with an organic compound (II) capable of forming a hydrogen bond with X; such as urea, wherein the molar ration of I to II is from 1:1.5 to 1:2.5. R1, R2, R3 and R4 may be H, optionally substituted C1 to C5 alkyl, optionally substituted C6 to C10 cycloalkyl, optionally substituted C6 to C12 aryl, optionally substituted C7 to C12 alkaryl, or R1 and R2 taken together may represent a C4 to C10 optionally substituted alkylene group, thereby forming with the N atom of formula I a 5 to 11-membered heterocyclic ring and all of R1, R2, R3 and R4 are not identical, X− may be NO3−, F, Cl−, Br−, I−, BF4−, ClO4−, CN−, SO3CF3−, or COOCF3−. The ionic compounds are useful as solvents, and electrolytes for example in electroplating, electrowinning, and electropolishing, and as catalysts.Type: ApplicationFiled: July 7, 2003Publication date: May 20, 2004Inventors: Andrew P. Abbott, David L. Davies, Glen Capper, Raymond K. Rasheed, Vasuki Tambyrajah
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Publication number: 20040054231Abstract: Ionic compounds having a freezing point of no more than 50° C., formed by the reaction of at least one amine salt of the formula R1R2R3R4N+X− (I) with at least one hydrated salt, which is a chloride, nitrate, sulphate or acetate of Li, Mg, Ca, Cr, Mn, Fe, Co, Ni, Cu, Zn, Cd, Pb, Bi, La or Ce; wherein R1, R2 and R3 are each independently a C1 to C5 alkyl or a C6 to C10 cycloalkyl group, or wherein R2 and R3 taken together represent a C4 to C10 alkylene group, thereby forming with the N atom of formula (I) a 5 to 11 membered heterocyclic ring, and wherein R4 is hydrogen, or phenyl, or C1 to C12 alkyl or cycloalkyl group, optionally substituted with at least one group selected from OH, Cl, Br, F, I, phenyl, NH2, CN, NO2, COOR5, CHO, COR5 and OR5, wherein R5 is a C1 to C10 alkyl or cycloalkyl group, and X− is an anion capable of being complexed by the said hydrated salt.Type: ApplicationFiled: August 11, 2003Publication date: March 18, 2004Inventors: Andrew Abbott, David L Davies, Glen Capper, Raymond K Rasheed, Vasuki Tambyrajah
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Patent number: 6573405Abstract: An ionic liquid having a melting point of no more than 60° C., formed by the reaction of a quaternary ammonium compound of the formula: R1R2R3R4N+X− (I) or a mixture of two or more therof; with a halide of zinc, tin or iron, or a mixture of two or more thereof.Type: GrantFiled: September 24, 2001Date of Patent: June 3, 2003Assignee: Scionix LimitedInventors: Andrew P. Abbott, David L. Davies
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Patent number: 4593470Abstract: A three dimensional graphics tablet for determining the three dimensional coordinates of points on an object placed on a supporting plane. The apparatus includes an articulated arm having at least two link elements connecting a contacting tip element to the support for rotational movement about a plurality of mutually angulated axes. By means of the arm articulation, the contacting tip element can be moved to arbitrary locations within a defined volume. Potentiometers are provided for measuring each of the angles of rotation about the mutually angulated axes. These potentiometers generate signals which collectively determine the coordinates of the location of the tip element. Embodiments are disclosed having three and four degrees of freedom and a portable embodiment including a clamp or bracket are disclosed.Type: GrantFiled: August 13, 1984Date of Patent: June 10, 1986Assignee: Micro Control Systems, Inc.Inventor: David L. Davies
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Patent number: 4554981Abstract: A tubing pressurized firing apparatus is shown for use with a tubing conveyed perforating gun of the type used to perforate a cased well bore. The firing apparatus has a tubular body with an upper end for connection in the well tubing string and with a lower end for connection to a well perforating gun. An inner mandrel is slidably mounted within the tubular body and has a ball seat formed in the interior bore thereof for receiving a ball dropped through the well tubing string. The ball and ball seat together form a pressure tight seal whereby tubing pressure in the well tubing string acts on the inner mandrel to slide the mandrel downwardly within the tubular body. A cocking mechanism located below the inner mandrel within the body includes a lockout member which is initially positioned between a detonating pin and a percussion detonator.Type: GrantFiled: July 5, 1985Date of Patent: November 26, 1985Assignee: Hughes Tool CompanyInventor: David L. Davies
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Patent number: 4477973Abstract: A three dimensional graphics tablet for determining the three dimensional coordinates of points on an object placed on a supporting plane. The apparatus includes an articulated arm having at least two link elements connecting a contacting tip element to the support for rotational movement about a plurality of mutually angulated axes. By means of the arm articulation, the contacting tip element can be moved to arbitrary locations within a defined volume. Potentiometers are provided for measuring each of the angles of rotation about the mutually angulated axes. These potentiometers generate signals which collectively determine the coordinates of the location of the tip element. Embodiments are disclosed having three and four degrees of freedom.Type: GrantFiled: July 14, 1982Date of Patent: October 23, 1984Assignee: Micro Control Systems, Inc.Inventor: David L. Davies
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Patent number: 4440794Abstract: An instant rice pudding mix which comprises a mixture of a powder comprising 15 to 35% by weight of a finely divided sugar, 25 to 40% by weight of a starch, 5 to 20% by weight of a finely divided fat; 5 to 25% by weight of a dried skim-milk powder; up to 3% by weight of an emulsifier and 0 to 4% by weight of an edible gum; and granules formed by the extrusion of a dough formed from 87 to 100% by weight of rice flour, up to 4.0% by weight of a starch-complexing agent, up to 5% by weight of an aerating agent and up to 4.0% of dried skim milk powder and/or dried whey powder mixed with a proportion of water sufficient to produce an extrudable dough. The pudding mix of the invention may conveniently be made up by the addition of hot or boiling water to produce a product having the texture of a traditional rice pudding. The pudding mix of the invention may be packed in pouches, envelopes or other protective cartons which afford moisture-barrier features.Type: GrantFiled: February 22, 1983Date of Patent: April 3, 1984Assignee: General Foods CorporationInventor: David L. Davies
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Patent number: 4203261Abstract: An abrasive belt apparatus for machining a workpiece to produce a preselected contour and finish comprising means for positioning the workpiece along a predetermined axis during machining operations. An endless abrasive belt is disposed in a plane substantially aligned with the axis of the workpiece and driven by suitable drive means. The belt is trained about contoured contact means disposed proximate a section of the workpiece and movable along an axis substantially perpendicular to the axis of the workpiece to bring the abrasive surface of the belt into contact with the workpiece for removing stock to produce a desired contour and finish upon actuation of the belt. The direction in which the belt is driven at its location of contact with the workpiece produces a finish having marks which run substantially longitudinally of the workpiece. Means are provided for selectively rotating the workpiece during machining operations to produce a workpiece having a substantially circular outline.Type: GrantFiled: March 14, 1977Date of Patent: May 20, 1980Assignee: Tasco, Inc.Inventor: David L. Davies
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Patent number: 4144327Abstract: The present invention encompasses an antimicrobial composition comprising an extract of lytic enzymes from Physarum. These lytic enzymes are particularly effective antimycotic agents when used in conjunction with conventional antimycotic agents.Type: GrantFiled: March 20, 1978Date of Patent: March 13, 1979Assignee: G. D. Searle & Co.Inventors: David A. L. Davies, Anthony M. S. Pope
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Patent number: D288815Type: GrantFiled: April 27, 1984Date of Patent: March 17, 1987Assignee: Micro Control Systems, Inc.Inventor: David L. Davies