Patents by Inventor David A. Mead

David A. Mead 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).

  • Publication number: 20230287364
    Abstract: The present disclosure describes Bst polymerase variants which exhibit DNA-dependent DNA polymerase and reverse transcriptase activity, and methods of use thereof. The Bst polymerase variants of the disclosure may be combined with a separate enzyme having reverse transcriptase activity to amplify target RNA sequences; however, the addition of a separate enzyme having reverse transcriptase activity is not necessary for the successful amplification of RNA targets using the Bst polymerase variants of the disclosure. Target DNA sequences may also be amplified using Bst polymerase variants of the disclosure.
    Type: Application
    Filed: March 8, 2023
    Publication date: September 14, 2023
    Applicant: Detect, Inc.
    Inventors: David Mead, Yogesh Chander, Kurt Throckmorton, Thomas D. Christian, Brandon Neel
  • Publication number: 20220372517
    Abstract: Disclosed herein are recombinant methods of activating expression of one or more biosynthetic gene clusters comprising more than one gene, the method comprising a recombinant DNA expression vector that possess two opposable inducible promoters that drives expression of a biosynthetic gene cluster exogenously from outside of the cluster to produce polyketides or non-ribosomal peptides in a heterologous host.
    Type: Application
    Filed: July 18, 2022
    Publication date: November 24, 2022
    Inventors: Robert Joseph STANKEY, DAVID MEAD
  • Patent number: 11390882
    Abstract: Disclosed herein are recombinant methods of activating expression of one or more biosynthetic gene clusters comprising more than one gene, the method comprising a recombinant DNA expression vector that possess two opposable inducible promoters that drives expression of a biosynthetic gene cluster exogenously from outside of the cluster to produce polyketides or non-ribosomal peptides in a heterologous host.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: July 19, 2022
    Assignee: VARIGEN BIOSCIENCES CORPORATION
    Inventors: Robert Joseph Stankey, David Mead
  • Publication number: 20200291430
    Abstract: Disclosed herein are recombinant methods of activating expression of one or more biosynthetic gene clusters comprising more than one gene, the method comprising a recombinant DNA expression vector that possess two opposable inducible promoters that drives expression of a biosynthetic gene cluster exogenously from outside of the cluster to produce polyketides or non-ribosomal peptides in a heterologous host.
    Type: Application
    Filed: March 11, 2020
    Publication date: September 17, 2020
    Inventors: Robert Joseph STANKEY, David MEAD
  • Patent number: 10624279
    Abstract: A system and method for controlling a grapple is described in embodiments herein. A variable pressure control may be implemented that controls the pressure applied to a load held by the grapple. An interlock mechanism may be employed on the felling grapple that disables the operation of components of the felling grapple such as a feller. A grapple release mechanism may be activated to release the pressure applied to the load in the event of a malfunction in the felling grapple.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: April 21, 2020
    Assignee: Altec Industries, Inc.
    Inventors: David Mead, Thomas Marietta
  • Patent number: 10470381
    Abstract: An insulating felling grapple is used with an insulating utility vehicle. The utility worker stands on the ground near the worksite and remotely controls the insulating felling grapple and the utility vehicle to perform the task. In addition to other standard trimming and removal tasks, the insulating felling grapple is adapted to allow for the removal of energized vegetation material. In one method, the utility worker grasps the energized vegetation material, lifts or moves the energized vegetation material such that it is no longer energized, severs the non-energized vegetation material, and moves the severed vegetation material to a discard location. A boom assembly of the utility vehicle includes a primary insulation segment. The felling grapple includes a secondary insulation segment, as well as a grapple and a feller. The grapple has at least two tines for gripping the energized material. The feller is configured to sever the energized or nonenergized material.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: November 12, 2019
    Assignee: Altec Industries, Inc.
    Inventors: David Mead, Eric Joseph Lumberg
  • Patent number: 9765343
    Abstract: Linear vectors derived from bacteriophage of E. coli and host cells suitable for cloning are provided. The linear vectors include a left arm comprising a left telomere and a first selectable marker, a right arm comprising a right telomere and a second selectable marker and a cloning region located between the left arm and the right arm. Optional further components of the vector include transcriptional termination sequences, multiple cloning sites and reporter stuffer regions.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: September 19, 2017
    Assignee: LUCIGEN CORPORATION
    Inventors: Ronald Godiska, David A. Mead, Nikolai V. Ravin
  • Publication number: 20160229899
    Abstract: Described herein are isolated polynucleotides that encode a fluorescent protein which is at least 80% sequence identical to a protein selected from the group consisting of SEQ. ID. NOS: 2, 4, 6, 10, 14, 18, 22, 26, 30, 34, 38, 42, 46, 50, 54, 58, 62, 66, 70, and 74. Also described are expression constructs containing the polynucleotides, transformed host cells containing the expression constructions, the encoded fluorescent proteins themselves, and methods of using the nucleotides and encoded fluorescent proteins for bioanalytical research.
    Type: Application
    Filed: April 26, 2016
    Publication date: August 11, 2016
    Applicant: Lucigen Corporation
    Inventors: Michele E. Auldridge, Laura P. Franz, David Mead, Saurabh Sen, Eric J. Steinmetz
  • Patent number: 9354175
    Abstract: Described herein are isolated polynucleotides that encode a fluorescent protein which is at least 80% sequence identical to a protein selected from the group consisting of SEQ. ID. NOS: 2, 4, 6, 10, 14, 18, 22, 26, 30, 34, 38, 42, 46, 50, 54, 58, 62, 66, 70, and 74. Also described are expression constructs containing the polynucleotides, transformed host cells containing the expression constructions, the encoded fluorescent proteins themselves, and methods of using the nucleotides and encoded fluorescent proteins for bioanalytical research.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: May 31, 2016
    Assignee: Lucigen Corporation
    Inventors: Michele E. Auldridge, Laura P. Franz, David Mead, Saurabh Sen, Eric J. Steinmetz
  • Publication number: 20150218565
    Abstract: Linear vectors derived from bacteriophage of E. coli and host cells suitable for cloning are provided. The linear vectors include a left arm comprising a left telomere and a first selectable marker, a right arm comprising a right telomere and a second selectable marker and a cloning region located between the left arm and the right arm. Optional further components of the vector include transcriptional termination sequences, multiple cloning sites and reporter stuffer regions.
    Type: Application
    Filed: April 8, 2015
    Publication date: August 6, 2015
    Applicant: Lucigen Corporation
    Inventors: Ronald Godiska, David A. Mead, Nikolai V. Ravin
  • Publication number: 20150198533
    Abstract: Described herein are isolated polynucleotides that encode a fluorescent protein which is at least 80% sequence identical to a protein selected from the group consisting of SEQ. ID. NOS: 2, 4, 6, 10, 14, 18, 22, 26, 30, 34, 38, 42, 46, 50, 54, 58, 62, 66, 70, and 74. Also described are expression constructs containing the polynucleotides, transformed host cells containing the expression constructions, the encoded fluorescent proteins themselves, and methods of using the nucleotides and encoded fluorescent proteins for bioanalytical research.
    Type: Application
    Filed: January 10, 2014
    Publication date: July 16, 2015
    Applicant: LUCIGEN CORPORATION
    Inventors: MICHELE E. AULDRIDGE, LAURA P. FRANZ, DAVID MEAD, SAURABH SEN, ERIC J. STEINMETZ
  • Patent number: 9029134
    Abstract: Linear vectors derived from bacteriophage of E. coli and host cells suitable for cloning are provided. The linear vectors include a left arm comprising a left telomere and a first selectable marker, a right arm comprising a right telomere and a second selectable marker and a cloning region located between the left arm and the right arm. Optional further components of the vector include transcriptional termination sequences, multiple cloning sites and reporter stuffer regions.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: May 12, 2015
    Assignee: Lucigen Corporation
    Inventors: Ronald Godiska, David A. Mead, Nikolai V. Ravin
  • Patent number: 8623652
    Abstract: A system for ligase-free cloning and/or expressing a target gene is described herein. A preferred version of the invention includes an E. coli host. The host preferably includes a T7 RNA polymerase gene comprising a T7gpl coding sequence, a lacUV5 promoter, and a lac operator. The host preferably further includes a lacI gene comprising a lacI coding sequence with an ATG start codon, a promoter derived from the lacql allele, and a translational enhancer derived from a 5? RNA leader sequence of T7 gene 10. The invention further includes a low-copy plasmid vector comprising a T7 promoter a lac operator operationally linked to the T7 promoter. The system is configured to inhibit target gene expression when uninduced and to permit gene expression upon induction by auto-induction.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: January 7, 2014
    Assignee: Lucigen Corporation
    Inventors: Eric Steinmetz, Ronald Godiska, David A. Mead
  • Publication number: 20130022980
    Abstract: The present invention is directed to DNA polymerase fusion proteins with increased processivity and nucleic acid affinity. The invention includes a fusion protein comprising a nucleic acid-binding domain fused to a polymerase domain. The nucleic acid binding domain contains at least one nucleic acid binding motif, such as a DNA-binding motif or an RNA-binding motif. The nucleic acid binding domain preferably embodies an oligonucleotide/oligosaccharide binding (OB) fold, among other conformations. The invention further includes methods of synthesizing nucleic acids using the fusion proteins described herein.
    Type: Application
    Filed: February 4, 2010
    Publication date: January 24, 2013
    Inventors: Robert Michael Nelson, Thomas W. Schoenfeld, David A. Mead
  • Publication number: 20120083018
    Abstract: Thermostable viral and microbial polymerases exhibiting a combination of activities selected from proofreading (3?-5?) exonuclease activity, nick translating (5?-3?) nuclease activity, synthetic primer-initiated polymerase activity, nick-initiated polymerase activity, reverse transcriptase activity, strand displacement activity, terminal transferase activity, primase activity, and/or efficient incorporation of chain terminating analogs. Some of the polymerases provided herein include a first motif and a second motif. The first motif preferably has the sequence X1X2X3DX4PX5IELRX6X7X8, wherein X1 is I or V; X4 is F or Y; X8 is G or A; and X2, X3, X5, X6, and X7 are any amino acid. The second motif preferably has the sequence RX9X10X11KSANX12GX13X14YG, wherein X11 is G or A; X12 is F, L, or Y; X13 is L or V; X14 is I or L; and X9 and X10 are any amino acid.
    Type: Application
    Filed: December 7, 2011
    Publication date: April 5, 2012
    Inventors: Thomas W. Schoenfeld, David A. Mead
  • Patent number: 8093030
    Abstract: Thermostable viral polymerases exhibiting a combination of activities selected from, proofreading (3?-5?) exonuclease activity, nick translating (5?-3?) nuclease activity, synthetic primer-initiated polymerase activity, nick-initiated polymerase activity, reverse transcriptase activity, strand displacement activity, and/or decreased discrimination against incorporation of nucleotide analogs. Also provided are compositions including the polymerases, polynucleotides encoding the polymerases and methods of using the polymerases.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: January 10, 2012
    Assignee: Lucigen Corporation
    Inventors: Thomas W. Schoenfeld, Vinay K. Dhodda, Robert A. Difrancesco, David A. Mead
  • Publication number: 20100255561
    Abstract: A system for ligase-free cloning and/or expressing a target gene is described herein. A preferred version of the invention includes an E. coli host. The host preferably includes a T7 RNA polymerase gene comprising a T7gpl coding sequence, a lacUV5 promoter, and a lac operator. The host preferably further includes a lacI gene comprising a lacI coding sequence with an ATG start codon, a promoter derived from the lacql allele, and a translational enhancer derived from a 5? RNA leader sequence of T7 gene 10. The invention further includes a low-copy plasmid vector comprising a T7 promoter a lac operator operationally linked to the T7 promoter. The system is configured to inhibit target gene expression when uninduced and to permit gene expression upon induction by auto-induction.
    Type: Application
    Filed: April 6, 2010
    Publication date: October 7, 2010
    Inventors: Eric Steinmetz, Ronald Godiska, David A. Mead
  • Patent number: 7723103
    Abstract: Vector preparations and cloning constructs suitable for use in cloning are provided. Vector preparations are double-stranded DNA molecules having two 3? termini, each terminus having a single base pair overhang that is capable of hybridizing to a single base pair overhang on a double stranded polynucleotide sequence to be cloned. The overhang of the vector preparation is suitably a dCMP and the overhang of the polynucleotide sequence to be cloned is suitably a dGMP. In other embodiments, the overhang of the polynucleotide sequence to be cloned is any ddNTP and the corresponding overhang of the vector preparation is any base that pairs to the ddNTP. The latter embodiment is particularly suited to preparing recombinant molecules having only a single insert. Methods of cloning, methods of preparing libraries of recombinant molecules and kits for carrying out the methods are also provided.
    Type: Grant
    Filed: January 8, 2007
    Date of Patent: May 25, 2010
    Assignee: Lucigen Corporation
    Inventors: David A. Mead, Ronald Godiska, Thomas W. Schoenfeld, Spencer Hermanson
  • Publication number: 20090263873
    Abstract: Linear vectors derived from bacteriophage of E. coli and host cells suitable for cloning are provided. The linear vectors include a left arm comprising a left telomere and a first selectable marker, a right arm comprising a right telomere and a second selectable marker and a cloning region located between the left arm and the right arm. Optional further components of the vector include transcriptional termination sequences, multiple cloning sites and reporter stuffer regions.
    Type: Application
    Filed: January 12, 2007
    Publication date: October 22, 2009
    Applicant: LUCIGEN CORPORATION
    Inventors: Ronald Godiska, David A. Mead, Nikolai V. Ravin
  • Publication number: 20080268498
    Abstract: Thermostable viral polymerases exhibiting a combination of activities selected from, proofreading (3?-5?) exonuclease activity, nick translating (5?-3?) nuclease activity, synthetic primer-initiated polymerase activity, nick-initiated polymerase activity, reverse transcriptase activity, strand displacement activity, and/or decreased discrimination against incorporation of nucleotide analogs. Also provided are compositions including the polymerases, polynucleotides encoding the polymerases and methods of using the polymerases.
    Type: Application
    Filed: October 6, 2006
    Publication date: October 30, 2008
    Applicant: LUCIGEN CORPORATION
    Inventors: Thomas W. Schoenfeld, Vinay K. Dhodda, Robert A. Difrancesco, David A. Mead