Patents Represented by Attorney Mary M. Allen
  • Patent number: 5652202
    Abstract: Copolymers and functionalised copolymers comprising ethylene units, in combination with non ethylene copolymer derivatives, give improved engine piston cleanliness when used as lubricating oil additives.
    Type: Grant
    Filed: August 15, 1995
    Date of Patent: July 29, 1997
    Assignee: Exxon Chemical Patents Inc.
    Inventor: David Robert Adams
  • Patent number: 5627294
    Abstract: An alcohol and/or a carboxylic acid or carboxylate is used to reduce the proportion of sediment obtained in the manufacture of a metal or ammonium dihydrocarbyl dithiophosphate, for example, a zinc dihydrocarbyl dithiophosphate (ZDDP) for use as an antiwear agent/antioxidant in crankcase lubricating oils.
    Type: Grant
    Filed: February 24, 1995
    Date of Patent: May 6, 1997
    Assignee: Exxon Chemical Patents Inc.
    Inventors: David R. Adams, Patrick F. Ginnelly
  • Patent number: 5624999
    Abstract: A functionalised polymer, especially an ashless dispersant or a viscosity index improver dispersant, suitable for use as a lubricating or fuel oil additive, or as an intermediate for use in the manufacture of such an additive, is prepared from reactants in different phases by reacting the reactants in a reaction region defined by adjacent surfaces between which there is relative movement or in a thin film on a surface over which they move.
    Type: Grant
    Filed: May 12, 1995
    Date of Patent: April 29, 1997
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Alessandro Lombardi, Geraldo Barini, Carmine D'Antonio, Stefano Gusi
  • Patent number: 5558802
    Abstract: The detergent inhibitor package has been found to influence the viscometric properties of SAE 5W lubricants that have less than 5 mass % of non-conventional basestock, use a basestock that has an average base stock neutral number not less than 105, a calibrated Noack volatility of not more than 22 wt. % loss, and a kinematic viscosity at 100.degree. C. (kV 100, measured by ASTM D445) less than 12.5 cSt. In particular, neutral and overbased calcium salts of organic acids have been found to increase low temperature high shear viscosity when measured in the CCS (ASTM D5293). These salts which are widely used for their detergency and acid neutralization properties should be avoided altogether or used at a level not exceeding 0.0007 moles of organic calcium salt per 100 grams of lubricant. Where diesel performance is required, for example to lubricate passenger car diesel engines, a calcium salt of an organic acid may be required to control piston deposits.
    Type: Grant
    Filed: September 14, 1995
    Date of Patent: September 24, 1996
    Assignee: Exxon Chemical Patents Inc
    Inventor: Michael Dowling
  • Patent number: 5478463
    Abstract: A method, composition and filter for reducing the presence of sludge or varnish precursors in a lubricating oil circulating within an internal combustion engine. The lubricating oil containing sludge or varnish precursors is contacted with discrete particles of an oil insoluble, oil wettable compound having an antioxidant functional group and/or a dispersant functional group, which are capable of complexing with sludge or varnish precursors. Preferably the compounds comprises a crosslinked amine having ethylene amine functionality. The starting polyethylene amines have a number average molecular weight in the range of about 100 to about 60,000, preferably 200 to 250 and are crosslinked with a silicon oxide, silane, silicate, epoxide, quinone, or phenol-formaldehyde crosslinking agent. The particles are encaged within a one or two stage oil filter together with filtering media such as chemically active filter media, physically active filter media and inactive filter media.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: December 26, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Darrell W. Brownawell, Warren A. Thaler, Cruise K. Jones, Jacob Emert, Abhimanyu O. Patil
  • Patent number: 5439604
    Abstract: This invention is to compositions containing metal salts, preferably copper or zinc salts, of polyalkenyl substituted monounsaturated mono- or dicarboxylic acids which may be used as a compatibilizing material for mixtures of high molecular weight dispersants, high total base number detergents, and various antiwear or antioxidant materials.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: August 8, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Malcolm Waddoups, Jacob Emert, Antonio Gutierrez, Robert D. Lundberg
  • Patent number: 5091316
    Abstract: A microbiological culture collection and transport device maintains viable organisms for periods of time longer than possible with existing sampling devices. It also allows recovery of detectable antigen at levels not achievable with conventional swabs. The new device has a sterile swabbing tip made with a non-toxic polyurethane foam having open cells at its exposed surface. It does not require a transport medium and can be used dry. The device may further include a sample inoculator to distribute organisms collected onto a solid or semi solid medium. Methods for collecting and transporting microbiological specimens and for recovering detectable antigen are also described.
    Type: Grant
    Filed: April 11, 1990
    Date of Patent: February 25, 1992
    Assignee: Becton, Dickinson and Company
    Inventors: James F. Monthony, David T. Stitt, C. Michael Gosnell, Shannon D. Stewart
  • Patent number: 5073340
    Abstract: A test device for use in determining analyte wherein binder is supported on a solid support in admixture with a marker whereby the presence and location of binder on the support can be determined prior to the assay. A control for the assay may also be applied to the support in admixture with a label.
    Type: Grant
    Filed: July 6, 1990
    Date of Patent: December 17, 1991
    Assignee: Becton, Dickinson and Company
    Inventors: Gloria J. Covington, Timothy G. Bloomster
  • Patent number: 4920046
    Abstract: A flow through test device and assay kit suitable for use by unskilled technicians is described. The flow through device has a porous support and an absorptive layer. The device is constructed for control of flow rates so that a tracer having a visible particulate label can be used. Optional flow control and porous spacer layers may be included.
    Type: Grant
    Filed: October 8, 1987
    Date of Patent: April 24, 1990
    Assignee: Becton, Dickinson and Company
    Inventors: Edward McFarland, Keith Uithoven, Jeffrey Carlson
  • Patent number: 4873126
    Abstract: A system having a coating station comprised of a dispensing assembly and a fluid collection head is useful in a method to precisely coat reagents on porous supports for use in diagnostic devices. In the method, a cover having an aperture therethrough and the porous support secured to its underside covering the aperture is positioned in the coating station between the dispensing assembly and the fluid collection head. The reagent is dispensed from a cannula in the dispensing assembly onto the portion of the porous support exposed through the aperture of the cover. A reduced pressure in the fluid collection head pulls fluid through the porous support. The system is automated by providing a guide channel for holding a plurality of covers in correct orientation and a magazine for holding a stack of covers. An indexing arm delivers the bottom-most cover in the stack to the guide channel and urges covers in the channel along its length.
    Type: Grant
    Filed: August 15, 1988
    Date of Patent: October 10, 1989
    Assignee: Becton, Dickinson and Company
    Inventors: Timothy G. Bloomster, Hans H. Feindt, Gerald D. Hahn, S. Melissa Maret
  • Patent number: 4814276
    Abstract: A nutrient growth medium which is highly selective for pathogenic Neisseria is provided. The nutrient growth medium includes an antibiotic agent which is a combination of vancomycin and lincomycin. The combination of lincomycin and vancomycin allows the use of lower concentrations of vancomycin than are generally employed in culture media used for the selective isolation of pathogenic Neisseria species.
    Type: Grant
    Filed: June 1, 1987
    Date of Patent: March 21, 1989
    Assignee: Becton, Dickinson and Company
    Inventors: George L. Evans, Deborah L. De Vaux Kopyta
  • Patent number: 4812408
    Abstract: A culture bottle assembly for the detection of microorganisms in a fluid sample is provided. The culture bottle assembly is a container having an internal flange which divides the culture bottle into two compartments. A frame having a lower peripheral edge which mates with the internal flange is provided in one compartment. A cap is provided for the container and means are provided for moving the cap axially with respect to the container. A resilient material is provided on the peripheral edge of the cup which is compressed by the cap moving means to provide a liquid tight seal between the two compartments.
    Type: Grant
    Filed: August 24, 1988
    Date of Patent: March 14, 1989
    Assignee: Becton, Dickinson and Company
    Inventors: Rainer Hammann, Friedrich Weber, Peter Rohm
  • Patent number: 4810651
    Abstract: A culture bottle assembly has a container divided into two compartments by a flange. A closure and flexible septum seals the container from the outside environment. A frame inside the container is moveable between two positions. In one position the two compartments are sealed from each other, and in the second position fluid communication exists between the compartments. The frame has an elongated member and a skirt. The skirt engages the flange to form a seal. Downward force in the elongated member causes the skirt to flex. Cooperating means create a gap between the skirt and the flange when the skirt flexes. The flexible septum covers the elongated member thereby allowing force to be applied to the elongated member without opening the container. A solid media holder has trays for holding solid media in the upper compartment.
    Type: Grant
    Filed: February 23, 1988
    Date of Patent: March 7, 1989
    Assignee: Becton, Dickinson and Company
    Inventor: Alan A. Schwartz
  • Patent number: 4806316
    Abstract: A substantially rigid, multi-well, self-pipetting device for use in chemical, immunochemical and microorganism analysis is provided. It includes a frame and a plurality of test wells disposed within the frame. A filing manifold communicates with each of the test wells through a filling passageway. A docking port on the periphery of the device receives a reservoir holding a fluid specimen. The docking port communicates with the filling manifold through a filling port and a filling channel. A vent control system also communicates with the test wells and is comprised of one or more vent manifolds, and/or valves to a vent manifold, and/or one or more vent holes to the ambient atmosphere. Any vent holes present are temporarily closed.
    Type: Grant
    Filed: March 17, 1987
    Date of Patent: February 21, 1989
    Assignee: Becton, Dickinson and Company
    Inventors: Raymond Johnson, Dwight Livingston, Robert C. Tite, Sheila J. Wood-Helie
  • Patent number: 4772558
    Abstract: A culture bottle assembly for the detection of micro-organisms in a fluid sample is provided. The culture bottle assembly is a container having a dividing wall which divides the culture into two compartments. A cap is provided for the container and means are provided for moving the cap axially with respect to the container. A resilient material is provided which is compressed by the cap moving means to provide a liquid tight seal between the two compartments.
    Type: Grant
    Filed: June 1, 1987
    Date of Patent: September 20, 1988
    Inventor: Ranier Hammann
  • Patent number: 4700997
    Abstract: An electrical connector for removably attaching a flat electrode to a conducting cable is shown. Flat, conductive upper and lower jaws are connected at the rear by flexible, resilient spring means, and are spaced apart at the front. The jaws are mounted within a housing, and are surmounted by a slide actuator having a finger movable member passing through a slot in a housing roof. The actuator slides on a guide means having a front planar surface and a rear planar surface higher than the front planar surface, the two planar surfaces connected by a ramp in a transition area. In the forward position, the actuator compresses the jaws together on the surfaces of the flat electrode to tightly hold the electrode in a locked conductive connection, and simple finger movement of the actuator releases the electrode.
    Type: Grant
    Filed: November 14, 1986
    Date of Patent: October 20, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Jerome E. Strand
  • Patent number: 4694835
    Abstract: A biomedical electrode comprising a backing, a biocompatible pressure sensitive adhesive (PSA), a bonding sheet, an electrical conductor, and an electrolyte composition is shown. The biocompatible PSA coats one surface of the backing. The bonding sheet has first and second faces smaller in surface area then the backing. The first face is bonded to the biocompatible PSA. The electrical conductor has a top face with first and second surfaces. The first surface spans a portion of the bonding sheet and the second surface adheres to the biocompatible PSA. The electrical conductor has a bottom face with a third surface opposing the first surface and a fourth surface opposing the second surface. In electrical contact with the third surface is the electrolyte composition. The electrolyte composition is also, adhered to a portion of bonding sheet. A continuous high speed and low cost method of manufacture is also shown.
    Type: Grant
    Filed: May 21, 1986
    Date of Patent: September 22, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Jerome E. Strand
  • Patent number: 4686182
    Abstract: A method of detecting a beta-lactam antibiotic in a liquid sample comprising the steps of: (a) forming a reaction medium by adding the sample to a predetermined amount of a dry reagent formulation comprising a D,D-carboxypeptidase, a substrate for said D,D-carboxypeptidase containing a carboxy-terminal D-alanine, and a reagent system which produces a color change in the presence of D-alanine; (b) incubating said reaction medium for a predetermined period; (c) adding a quenching material to terminate the reaction; (d) observing the color of the reaction medium. A kit for carrying out this method is also disclosed.
    Type: Grant
    Filed: October 17, 1984
    Date of Patent: August 11, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: James F. Drake
  • Patent number: 4640289
    Abstract: A biomedical electrode comprised of an electrical terminal member, an ionically conductive layer, a retainer sheet and a medical tape is provided. The base of the electrical terminal member is disposed between the retainer sheet and the ionically conductive layer so that the retainer sheet prevents dislodging of the terminal member upon connection and disconnection of a lead wire.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: February 3, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Lawrence W. Craighead
  • Patent number: 4627427
    Abstract: An article adaptable for use as a universal medical cover sheet is shown. The article is comprised of draping material and an integrally associated surgical zone and is formed as a closed loop. The loop is dimensioned such that opening of the loop yields a cover sheet having the surgical zone positioned within the draping material so that non-surgical areas of a patient are covered sufficiently for surgical purposes by draping material when the surgical zone is placed to permit access to the surgical site involved in the procedure. The loop is preferably formed so that its outer surface will become the patient surface of the cover sheet resulting upon opening of the loop. It is preferably folded first along longitudinal fold lines and thereafter along transverse fold lines. The folding preferably results in exposure of the surgical zone at an outer surface of the folded loop.
    Type: Grant
    Filed: October 17, 1984
    Date of Patent: December 9, 1986
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Judith A. Arco