Patents Represented by Attorney Steven C. Petersen
  • Patent number: 6635289
    Abstract: The present invention provides novel baked goods having incorporated therein a delivery vehicle that provides protection to an alpha-amylase enzyme from thermal denaturation and continuously releases the alpha-amylase enzyme during, and following the baking process. Essentially, dry, food-grade alpha-amylase particles are mixed with a food grade lipid in a quantity sufficient to envelop the alpha-amylase particles thereby forming a loaded delivery vehicle or enveloped alpha-amylase. The enveloped alpha-amylase is subsequently added to a dough comprising flour, water, and other dough forming ingredients near the end of the mix cycle. Once the enveloped alpha-amylase is incorporated, the dough continues through the normal production process for that particular baked product. The food grade lipid enveloping the alpha-amylase provides thermal protection to the enzyme. No other production or packaging modifications need be made.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: October 21, 2003
    Inventor: Merritt C. Horn
  • Patent number: 6612975
    Abstract: A blood centrifuge with a drive assembly for transmitting an input rotation speed to a rotor with a sample reservoir at a desired rotation ratio. The drive assembly includes a base and an outer shell mounted to the base to rotate at an input rate. A bottom pulley is rigidly mounted to the base and attached to the outer shell with bearings. A top pulley is mounted to a center shaft of the outer shell to rotate with the outer shell about the central axis of the centrifuge. An internal drive belt is provided to transmit the rotation to the top pulley via a pair of transversely mounted idler pulleys that rotate with the outer shell. The top pulley is thus rotated at twice the input rate but in the same direction. A rotor assembly with the sample reservoir is attached to the top pulley to separate blood components.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: September 2, 2003
    Assignee: Medtronic, Inc.
    Inventors: David Malcom, Victor D. Dolecek
  • Patent number: 6610002
    Abstract: A method of harvesting platelet rich plasma from whole blood, comprising adding an aliquot of blood via the inlet tube of a rotating flexible centrifuge bag comprising inlet and outlet tubes sandwiched between doughnut shaped flexible sheets sealed together at the outer and inner perimeters. The whole blood separates radially into fractions. The distal end of the outlet tube is in flow communication with a desired fraction. The desired fraction is removed from the rotating bag via the outlet tube and withdrawal is terminated when an undesired fraction is detected to be near the distal end of the outlet tube. An alternative method comprises adding an aliquot of blood via the inlet channel of a rigid centrifuge container, said container having an interior collection chamber for receiving said whole blood and having a generally off-centered figure eight-shaped side cross-sectional configuration.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: August 26, 2003
    Assignee: Medtronic, Inc.
    Inventor: Victor D. Dolecek
  • Patent number: 6605451
    Abstract: The present invention pertains to methods, reagents, compositions, kits, and instruments for use in simultaneously amplifying multiple targets. In particular, this invention is based on the discovery of a two-step multiplex amplification reaction wherein the first step truncates the standard initial multiplex amplification round to “boost” the sample copy number by only a 100-1000 fold increase in the target. Following the first step the product is divided into optimized secondary single amplification reactions, each containing one of the primer sets that were used previously in the first or multiplexed booster step. The booster step can occur using an aqueous target nucleic acid or using a solid phase archived nucleic acid.
    Type: Grant
    Filed: June 6, 2000
    Date of Patent: August 12, 2003
    Assignee: Xtrana, Inc.
    Inventors: Jeffery M. Marmaro, John C. Gerdes
  • Patent number: 6605028
    Abstract: A centrifuge system with a temperature control system for controlling the temperature of fractions removed or output from the centrifuge to a collection chamber. In one embodiment, the centrifuge system provides an integral heater element operable by a temperature controller to control the temperature of the collection chamber or dispenser assembly. A temperature sensor is provided to allow the temperature controller to accurately monitor the temperature of the fraction held in chambers or syringes in the dispenser assembly. In a more particular embodiment, the centrifuge system is utilized to separate and extract platelets from blood samples. The heater element is positioned adjacent collection syringes in the dispenser assembly and selectively operated to maintain the temperature of the platelets in the collection syringes within an activation temperature range to activate the platelets and facilitate creation of autologous platelet gel.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: August 12, 2003
    Assignee: Medtronic, Inc.
    Inventor: Victor D. Dolecek
  • Patent number: 6596180
    Abstract: A centrifuge system for the formation of an autologous platelet gel wherein all of the blood components for the gel are derived from a patient to whom the gel is to be applied. First a platelet rich plasma and a platelet poor plasma are formed by centrifuging a quantity of anticoagulated whole blood that was previously drawn from the patient. The platelet rich plasma or platelet poor plasma is then automatically drawn out of the centrifuge bag and proportioned into separate chambers in a dispenser. The first portion is activated where a clot is formed and thrombin is obtained. The thrombin is then latter mixed with the second portion to obtain a platelet gel.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: July 22, 2003
    Assignee: Medtronic, Inc.
    Inventors: Robert F. Baugh, Lisa M. Lim, Julie S. Johnston, John G. Rivera, Victor D. Dolecek
  • Patent number: 6596181
    Abstract: A centrifuge rotor for separating components contained in a fluid, comprising an annular base having a first annular channel and an annular cover having a second annular channel for holding a flexible, doughnut-shaped centrifuge bag therebetween. When the base and the cover are superimposed, the first and second channels define an annular interior chamber having an off-centered figure eight configuration. The base and cover each comprise a grooved column axially centered and extending from the base top surface and the cover bottom surface, respectively. The flexible bag comprises inner and outer tubes which extend from the central core of the bag and which are seated in the column grooves to ensure that the bag is fixably rotatable with the rotor.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: July 22, 2003
    Assignee: Medtronic, Inc.
    Inventors: Victor D. Dolecek, David Malcolm
  • Patent number: 6596776
    Abstract: The present invention relates to a naturally obtained mixture of higher molecular weight primary aliphatic alcohols which contain 20 to 34 carbon atoms. This invention also relates to the process for obtaining the alcohol mixture by extraction and purification with organic solvents from a natural product, such as beeswax with and without saponification of the natural product. The alcohol mixture obtained from beeswax has enhanced purity and contains a mixture of alcohols having 20, 22, 24, 26, 27, 28, 30, 32 and 34 carbon atoms. The alcohol mixture is useful in pharmaceutical compositions, foodstuffs and dietary supplements and is effective for lowering cholesterol and LDL-cholesterol and increasing HDL-cholesterol levels so that it is effective in treating hypercholesterolemia.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: July 22, 2003
    Assignee: Hauser, Inc.
    Inventors: William R. Gamble, Zhengjie Liu, David T. Bailey, Pedro P. Perez, Dean P. Stull, Steven L. Richheimer, Rebecca L. Nichols, Rod Lenoble
  • Patent number: 6589153
    Abstract: A centrifuge disposable having a collection chamber for receiving and holding a fluid to be centrifuged, the chamber having an outer perimeter, an inner perimeter, a generally circular cross-sectional area, and a conical outboard collecting portion. The collection chamber is typically formed from relatively rigid, molded plastic or other materials. The chamber further ports in communication near the outboard portions of the chamber to provide fluid communication to a tubing, which may be single lumen for discontinuous embodiments in which a single tube is used for fill and extraction and multi-lumen for continuous fill and extraction embodiments in which an inlet lumen is used for fill and one or more outlet lumens are used for extraction of separated components.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: July 8, 2003
    Assignee: Medtronic, Inc.
    Inventors: Victor D. Dolecek, David Malcolm, Kevin D. McIntosh
  • Patent number: 6589155
    Abstract: A belt-driven blood centrifuge with side-mounted drive motor for rotating the centrifuge at a rotation speed selected to separate blood components. The centrifuge includes a drive shaft assembly rotated at an input rotation speed and a rotor assembly rotatably linked to the drive shaft assembly rotated at an output rotation speed twice the input rotational speed. A drive motor is provided with a drive pulley to drive a belt, a chain, and the like to provide the motive force to rotate the drive shaft at the input rotation speed. In one embodiment, a belt is provided to contact both the pulley of the drive motor and an outer surface of a rotatable shell of the drive shaft assembly. A base is included in the centrifuge upon which the drive shaft assembly is mounted. The drive motor is positioned adjacent the drive shaft assembly and mounted on the base.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: July 8, 2003
    Assignee: Medtronic, Inc.
    Inventor: Victor D. Dolecek
  • Patent number: 6586464
    Abstract: Methods for producing novel artemisinin analogs and artemisinin dimers having antimalarial, antiproliferative and antitumor activities are described herein. These novel artemisinin analogs and artemisinin dimers have the following structure or diastereomers thereof, having antimalarial, and antiproliferative and antitumor activities wherein, the monomers of the present invention are formed when n is I and R is alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, alkenyl, alkynyl, aryl or heteroaryl. The dimers of the present invention are formed when n is 2 and R is a linker including, but not limited to, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, alkenyl, alkynyl, aryl or heteroaryl.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: July 1, 2003
    Assignees: Johns Hopkins University, Hauser, Inc.
    Inventors: Gary H. Posner, Hardwin O'Dowd, Suji Xie, Theresa A. Shapiro, Christopher Murray
  • Patent number: 6582350
    Abstract: A rigid centrifuge container for separating components of a fluid, comprising a rigid annular body having an axial core and an interior collection chamber for receiving and holding the fluid during centrifugation. The chamber has a generally off-centered figure eight-shaped side cross-sectional configuration, wherein the narrowest portion of the chamber is closer to the inner perimeter. The chamber further has an inlet channel extending radially from the core to a distance near the outer perimeter of the chamber, and an outlet channel extending radially from the core to a distance approximately near the narrowest portion of the chamber. The distal end of the inlet channel is in fluid communication with the interior of the chamber, and the distal end of the outlet channel is in fluid communication with the interior of the chamber at the narrowest portion.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: June 24, 2003
    Assignee: Medtronic, Inc.
    Inventor: Victor D. Dolecek
  • Patent number: 6579219
    Abstract: A method of harvesting a predetermined component contained in a fluid, comprising adding an aliquot of said fluid via the inlet tube of a rotating centrifuge container comprising at least one inlet tube and at least one outlet tube, wherein the fluid separates radially into fractions. The distal end of the outlet tube is in flow communication with the desired component. The desired component is removed from the rotating container via the outlet tube, and withdrawal is terminated when an undesired fraction is detected to be near the distal end of the outlet tube. In one embodiment the container is a doughnut shaped flexible bag. In an alternative method the centrifuge container is a rigid container having an interior collection chamber for receiving said whole blood and having a generally off-centered figure eight-shaped side cross-sectional configuration.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: June 17, 2003
    Assignee: Medtronic, Inc.
    Inventors: Victor D. Dolecek, David Malcolm
  • Patent number: 6569808
    Abstract: The present invention provides a novel composition and method for controlling, killing or inhibiting the growth of bryophytes (e.g. mosses and liverworts). It is applicable to the remediation of these organisms in, gardens, orchards or agricultural land, or forests and upon higher plants without substantial detriment to grasses, trees or most broad leaf plants. The novel composition is a combination of an effective amount of finely ground calcium-rich compound suspended in a horticulturally or agriculturally acceptable diluent, and/or binder/carrier. In addition to being a carrier for the calcium-rich compound the binder also acts to bind fine soil particles, helping to conserve irrigation water and to reduce soil erosion.
    Type: Grant
    Filed: July 30, 2001
    Date of Patent: May 27, 2003
    Inventor: Lee F. Klinger
  • Patent number: 6555064
    Abstract: An apparatus is provided for performing an activated clotting time test on a sample of blood containing platelets using a plunger sensor technique, the apparatus comprising a test cell, and wherein the test cell comprises an anticoagulant, a contact activator, and a predetermined amount of a platelet inactivating agent.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: April 29, 2003
    Assignee: Medtronic, Inc.
    Inventors: Robert F. Baugh, Carole G. Lane, Adrian C. Wilson
  • Patent number: 6555066
    Abstract: An apparatus for performing a platelet inhibition test on a sample of blood is provided, comprising a plurality of test cells, the cells being adapted for receiving an aliquot portion of the sample, wherein each of the cells comprises an anticoagulant and a clotting activator, and wherein at least one of the cells further comprises a platelet inactivating agent, wherein a clotting time is determined for each of the aliquot portions, and wherein a relative clotting time for each of the aliquot portions comprising the platelet inhibitor is determined as compared to a reference clotting time for a cell containing no platelet inhibitor, wherein the relative clotting times for the cells are determinative of the platelet inhibition of the sample.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: April 29, 2003
    Assignee: Medtronic, Inc.
    Inventors: Robert F. Baugh, Carole G. Lane, Adrian C. Wilson
  • Patent number: 6547861
    Abstract: Trace impurities such as organic compounds and carbon monoxide in reactive fluids such as ammonia, hydrogen chloride, hydrogen bromide, and chlorine are reduced to sub-ppb levels using gas purifying systems that contain a preconditioned ultra-low emission (P-ULE) carbon. P-ULE is capable of removing impurities from a reactive fluid down to parts-per-billion (ppb) and sub-ppb levels without concurrently emitting other impurities such as moisture or carbon dioxide into the purified reactive fluid. The P-ULE carbon is prepared by heating a carbon material to temperatures from 300° to about 800° C. in an ultra-dry, inert gas stream, to produce an ultra-low emission (ULE) carbon material, subjecting the ULE carbon to a second activation process under a reactive gas atmosphere to produce a P-ULE carbon and storing the P-ULE carbon in an environment that minimizes contamination of the P-ULE prior to its use in a gas purifier system.
    Type: Grant
    Filed: February 6, 2001
    Date of Patent: April 15, 2003
    Assignee: Matheson Tri-Gas,, Inc.
    Inventors: Hans H. Funke, Dan Fraenkel, Virginia H. Houlding
  • Patent number: 6526803
    Abstract: An apparatus and method for generating moisture standards in gases are disclosed. In particular, the invention relates to an apparatus for introducing a preselected amount of water vapor or other vaporized liquid into a flowing gas stream at a constant rate, which comprises a suitable syringe having a needle attached thereto; an evaporator attached to said needle, wherein the evaporator is located in the flowing gas stream; and a means for applying pressure to the syringe, such that water or other liquid may be delivered at a constant rate from the syringe through the needle into the evaporator.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: March 4, 2003
    Assignee: Matheson Tri-Gas, Inc.
    Inventors: Dan Fraenkel, Gerald Cooper
  • Patent number: 6523711
    Abstract: A sports bottle cap having a pressure differential valve is provided which allows water to flow out through the bottle cap only when the bottle is inverted and squeezed or alternatively a straw may be threaded through the pressure differential valve, thereby deactivating it, and attached to the bottle cap allowing the user to draw liquid from the bottle through the straw. In operation the bottle cap of the present invention allows the user to dispense fluid from within the bottle in two different ways. The first manner of use allows liquid to be dispensed only when the bottle containing the liquid is inverted and squeezed. Squeezing causes the pressure to increase on the inside of the bottle thereby causing the pressure differential valve to open and liquid to exit; however, when the bottle is not squeezed the pressure differential valve remains in the closed position sealing bottle.
    Type: Grant
    Filed: April 13, 2000
    Date of Patent: February 25, 2003
    Inventors: Douglass E. Hughes, Raymond G. Bryan
  • Patent number: RE38117
    Abstract: Described herein are novel trioxane dimers of structure which possess antiproliferative and antitumor activities.
    Type: Grant
    Filed: November 21, 2000
    Date of Patent: May 6, 2003
    Assignees: Hauser, Inc., Johns Hopkins
    Inventors: Qun Y. Zheng, Christopher Murray, Randall J. Daughenbaugh, Poonsakdi Ploypradith, Gary H. Posner