Patents Represented by Attorney, Agent or Law Firm Arnall Golden & Gregory, LLP
  • Patent number: 6659176
    Abstract: A method and apparatus for remediation of non-aqueous phase liquids (NAPL), including the use of a prior art hydrophobic adsorption system including a continuous loop of adsorptive material, with a weighted pulley on the free end of the loop to allow for the loop to be placed within a well being deeper than it is wide.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: December 9, 2003
    Inventor: Raj Mahadevaiah
  • Patent number: 6642928
    Abstract: An apparatus for displaying a polygon on a horizontal scan display device having a plurality of pixels includes first and second rasterizers that each process respective first and second sets of pixels. Each set of pixels includes vertical stripes that are transverse to the horizontal scan of the display. To that end, the first rasterizer has an input for receiving polygon data relating to the polygon. The first rasterizer determines a first set of pixels that are to be lit for display of the polygon, and also determines display characteristics of the first set of pixels. Similar manner, the second rasterizer also includes an input for receiving polygon data relating to the polygon. The second rasterizer similarly determines a second set of pixels that are to be lit for display of the polygon, and also determines display characteristics of the second set of pixels.
    Type: Grant
    Filed: May 1, 2002
    Date of Patent: November 4, 2003
    Assignee: 3DLabs, Inc., Ltd.
    Inventors: James L. Deming, Matt E. Buckelew, Clifford A. Whitmore, Steven J. Heinrich, Dale L. Kirkland, Timothy S. Johnson
  • Patent number: 6628288
    Abstract: A back end unit for use with a graphics processor includes an input for receiving graphics data streams from the graphics processor, an output for transmitting graphics data streams, and a plurality of paths, coupled with the input and output, that direct graphics data streams between the input and the output. The plurality of paths direct data between the various modules that are a part of the back end unit. To that end, among other things, the back end unit also includes a gamma correction module that applies gamma correction operations to graphics data streams, a cursor module that adds cursor data to graphics data streams, and a digital to analog converter that converts the graphics data streams from a digital format to an analog format. The plurality of paths thus permit graphics data streams to pass through no more than two of the gamma correction module, the cursor module, and the digital to analog converter.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: September 30, 2003
    Assignee: 3Dlabs, Inc., Ltd.
    Inventors: Michael Potter, Clifford A. Whitmore, Jeff S. Ford
  • Patent number: 6625150
    Abstract: A policy engine for handling incoming data packets. The policy engine includes a stream classification module, a data packet input/output module, and a policy enforcement module. The policy enforcement module further includes a packet scheduler, an on-chip packet buffer circuitry, and a plurality of action processors. The stream classification module creates a packet service header for each data packet, wherein the packet service header indicates policies to be enforced for that data packet. The action processors enforce the policies.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: September 23, 2003
    Assignee: Watchguard Technologies, Inc.
    Inventor: JungJi John Yu
  • Patent number: 6597157
    Abstract: An integrated circuit controller for power conversion systems that provides for the control of parallel phased semiconductor switches without the need for separate filter inductors for each switch. The controller derivates two phased clock signals from a source clock, generates ramp signals, modulates ramp signals, and outputs phased gate drive signals to control parallel phased switches.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: July 22, 2003
    Assignee: 3DLabs, Inc., Ltd
    Inventors: Eduard F. Boeckmann, Stewart Carlton
  • Patent number: 6597628
    Abstract: A system for ensuring that erroneous data is not improperly latched in a gate when reading data from a DDR-SDRAM. The system is preferably a circuit that employs the last falling edge of a receive strobe to stop further variation of the receive strobe from affecting a new receive strobe signal.
    Type: Grant
    Filed: April 2, 2002
    Date of Patent: July 22, 2003
    Assignee: 3DLabs, Inc., Ltd
    Inventor: Daniel L. Kerl
  • Patent number: 6577316
    Abstract: A graphics accelerator includes a vertex input for receiving vertex data, an output for forwarding processed data, and a processor coupled with the vertex input and output. The graphics accelerator also includes an instruction input that receives instructions for processing the vertex data received from the vertex input. The processor is responsive to wide word instructions.
    Type: Grant
    Filed: July 15, 1999
    Date of Patent: June 10, 2003
    Assignee: 3Dlabs, Inc., Ltd
    Inventors: Vernon Brethour, Dale Kirkland, William Lazenby, Gary Shelton
  • Patent number: 6560238
    Abstract: A method of scheduling packet output according to a quality of service action specification, the method maintains a calendar queue of bandwidth timeslots, organizes the timeslots into groups, invokes a look-up logic circuitry to inspect a group of timeslots substantially simultaneously, determines a first unoccupied timeslot to schedule a current packet, and also determines a first occupied timeslot that contains a next packet to transmit.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: May 6, 2003
    Assignee: WatchGuard Technologies, Inc.
    Inventors: JungJi John Yu, Fu-Kang Frank Chao
  • Patent number: 6549055
    Abstract: Apparatus (1) for generating a control signal for a tunable circuit (3) sensitive to temperature receives an input control signal and predistorts it in a distortion circuit (4), so that the output (5) of the tunable circuit (3) will be substantially corrected for non-linearities in the tunable circuit (3). The distortion circuit (4) includes a linear non-distortion circuit element (9), which may be a linear temperature compensation element, and one or more non-linear distortion circuit elements (12, 13, 14), each of which distort the input control signal according to a different function. The outputs of the distortion circuit elements are passed to variable gain elements (17, 18, 19, 20) to produce weighted components. The weighted linear and non-linear components are then combined in a combination circuit element (8) to provide a predistorted control signal to the tunable circuit (3).
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: April 15, 2003
    Assignee: C-Mac Quartz Crystals Limited
    Inventor: George Hedley Storm Rokos
  • Patent number: 6542508
    Abstract: A hardware-based policy engine that employs a policy cache to process packets of network traffic. The policy engine includes a stream classifier that associates each packet with at least one action processor based on data in the packet, and the action processor further acts on the packets based on the association determined by the stream classifier.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: April 1, 2003
    Assignee: WatchGuard Technologies, Inc.
    Inventor: Yee-Jang James Lin
  • Patent number: 6535216
    Abstract: An apparatus for displaying a polygon on a horizontal scan display device having a plurality of pixels includes first and second rasterizers that each process respective first and second sets of pixels. Each set of pixels includes vertical stripes that are transverse to the horizontal scan of the display. To that end, the first rasterizer has an input for receiving polygon data relating to the polygon. The first rasterizer determines a first set of pixels that are to be lit for display of the polygon, and also determines display characteristics of the first set of pixels. In a similar manner, the second rasterizer also includes an input for receiving polygon data relating to the polygon. The second rasterizer similarly determines a second set of pixels that are to be lit for display of the polygon, and also determines display characteristics of the second set of pixels.
    Type: Grant
    Filed: May 1, 2002
    Date of Patent: March 18, 2003
    Assignee: 3DLabs, Inc., Ltd.
    Inventors: James L. Deming, Matt E. Buckelew, Clifford A. Whitmore, Steven J. Heinrich, Dale L. Kirkland, Timothy S. Johnson
  • Patent number: 6350859
    Abstract: Two distinct scavenger receptor type proteins having high affinity for modified lipoproteins and other ligands have been isolated, characterized and cloned. HaSR-BI, an AcLDL and LDL binding scavenger receptor, which is distinct from the type I and type II macrophage scavenger receptors, has been isolated and characterized and DNA encoding the receptor cloned from a variant of Chinese Hamster Ovary Cells, designated Var-261. dSR-CI, a non-mammalian AcLDL binding scavenger receptor having high ligand affinity and broad specificity, was isolated from Drosophila melanogaster. The isolated receptors are useful in screening for drugs that inhibit uptake of cholesterol in endothelial or adipose cells or macrophages, respectively. They are also useful as probes for the isolation of other lipoprotein receptors and in research the roles of these receptors.
    Type: Grant
    Filed: February 2, 1999
    Date of Patent: February 26, 2002
    Assignee: Massachusetts Institute of Technology
    Inventors: Monty Krieger, Susan L. Acton, Attilio Rigotti
  • Patent number: 6290729
    Abstract: A method for providing a synthetic barrier made of biocompatible polymeric materials in vivo which involves application of a material to a tissue or cellular surface such as the interior surface of a blood vessel, tissue lumen or other hollow space, is disclosed herein. The material may also be applied to tissue contacting surfaces of implantable medical devices. The polymeric materials are characterized by a fluent state which allows application to and, preferably adhesion to, tissue lumen surfaces, which can be increased or altered to a second less fluent state in situ; controlled permeability and degradability; and, in the preferred embodiments, incorporation of bioactive materials for release in vivo, either to the tissue lumen surface or to the interior of the lumen, which alter cell to cell interactions.
    Type: Grant
    Filed: December 3, 1997
    Date of Patent: September 18, 2001
    Assignee: Endoluminal Therapeutics, Inc.
    Inventors: Marvin J. Slepian, Stephen P. Massia
  • Patent number: 6280944
    Abstract: Assays that are prognostic for patients that will develop nephritis have been developed where patient serum is screened for the presence of anti-dsDNA antibodies that are cross reactive with A and D SnRNP proteins. The assays are based on the use of either peptides containing epitopes bound by the anti-dsDNA antibodies, or the antigens for the antibodies, A and D SnRNP proteins. Therapeutic compositions have also been developed using either antibodies that block the pathogenicity of the anti-dsDNA antibodies, such as the naturally occurring anti-La/SSB, anti-Ro/SSA and anti-U1RNP antibodies that are cross reactive with the anti-dsDNA or using the peptides or A and D proteins to induce tolerance.
    Type: Grant
    Filed: August 2, 1999
    Date of Patent: August 28, 2001
    Assignee: Oklahoma Medical Research Foundation
    Inventors: Morris Reichlin, Eugen Koren, Wei Zhang
  • Patent number: 6261544
    Abstract: A method for alleviating the symptoms of a cosmetic or dermatologic skin condition is described. An effective amount of a poly(hydroxy acid)/polymer conjugate in a pharmaceutically or cosmetically acceptable vehicle is provided. Topical compositions of the conjugates with another cosmetic or dermatological agent, and compounds of the conjugates having attached physiologically active functional groups, are also provided.
    Type: Grant
    Filed: February 15, 1999
    Date of Patent: July 17, 2001
    Assignee: Focal, Inc.
    Inventors: Arthur J. Coury, Luis Z. Avila, Chandrashekhar P. Pathak, Shikha P. Barman
  • Patent number: 6248525
    Abstract: Two methodologies are provided: the first provides a means for rapidly and efficiently identifying essential and functional genes; and the second provides a means for obtaining biologically active nucleic molecules (ribozymes, EGSs, and antisense,) which can be used to inactivate functional genes. In the first method, a library of EGSs is prepared based on all possible known compositions. In a preferred embodiment, the EGSs are twelve or thirteen-mers for targeting bacterial RNAse to cleave a substrate. This library is added to the cells containing the genes to be screened, for example, E. coli. Those cells in which the EGS causes a loss of viability, or other phenotype, are identified. The EGS(s) responsible for the loss of viability are analyzed, and the resulting sequence information used to identify the gene within the known genomic sequences.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: June 19, 2001
    Assignee: Yale University
    Inventor: Timothy W. Nilsen
  • Patent number: 6245537
    Abstract: Polyhydroxyalkanoate (PHA) that contains a pyrogen such as endotoxin due to a process of producing the PHA is treated to remove the pyrogen by a process that does not affect the inherent chemical and physical properties of the PHA to obtain a biocompatible PHA. PHA produced by fermentation with a Gram negative bacteria can be treated with an oxidizing agent such as hydrogen peroxide or benzoyl peroxide to reduce the endotoxin content to less than 20 endotoxin units/gram of PHA to produce PHA that does not elicit an acute inflammatory response when implanted in an animal. The PHA may have a melting point or glass transition temperature less than 136° C., and can be chemically modified or derivatized such as by covalently coupling an attachment or targeting molecule.
    Type: Grant
    Filed: May 12, 1998
    Date of Patent: June 12, 2001
    Assignee: Metabolix, Inc.
    Inventors: Simon F. Williams, David P. Martin, Tillman Gerngross, Daniel M. Horowitz
  • Patent number: 6238925
    Abstract: It has been discovered that one can predict the likelihood a child will outgrow an allergy, especially a food allergy, by screening for IgE antibodies immunoreactivities with linear versus conformational epitopes. The child is first screened using standard techniques to determine what antigens the child is allergic to. The immunoglobulins in the sample from the patient are then characterized either using the natural purified antigen, recombinant antigen, reduced and alkylated antigen, proteolytic fragments of the antigen or synthetic peptides of between four and 40 amino acids in length, preferably six to ten amino acids, which can be immobilized for rapid and accurate screening. The antibodies from the patient, typically present in a serum or plasma sample, are reacted with the protein or peptides to determine which peptides are bound by the antibodies. These antibodies are then characterized to determine if the epitopes they bind are linear or conformational.
    Type: Grant
    Filed: January 28, 1999
    Date of Patent: May 29, 2001
    Assignee: Panacea Pharmaceuticals, LLC
    Inventor: Hugh A. Sampson
  • Patent number: 6239101
    Abstract: Small, buffer soluble polypeptides having amino acid structures corresponding to residues 234-486, 310-486, and 407-486, of thrombomodulin and functionally equivalent analogs thereof inhibiting the clotting activity of thrombin and increasing protein C activation. The polypeptides can be coated onto the surface of articles adapted for contacting mammalian blood to render the surface non-thrombogenic. In pharmaceutical compositions, the polypeptides act as a natural anticoagulant.
    Type: Grant
    Filed: January 31, 1991
    Date of Patent: May 29, 2001
    Assignee: Oklahoma Medical Research Foundation
    Inventors: Charles T. Esmon, Naomi L. Esmon, Deborah J. Stearns, Shinichiro Kurosawa
  • Patent number: 6234990
    Abstract: Methods and devices for application of ultrasound to a small area of skin for enhancing transdermal transport. An ultrasound beam having a first focal diameter is channelled into a beam having a second, smaller diameter without substantial loss of energy. Higher energy ultrasound can be used while causing less pain. Alternatively, ultrasound energy is applied through a vibrating element positioned just contacting, above or extending into the skin. Use of the element facilitates extraction of analyte and may enhance drug delivery. A two step noninvasive method involves application of ultrasound to increase skin permeability and removal of ultrasound followed by transdermal transport that can be further enhanced using a physical enhancer.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: May 22, 2001
    Assignee: Sontra Medical, Inc.
    Inventors: Stephen Rowe, Joseph Kost, Samir S. Mitragotri, Michael Pishko, Matthew Davis