Patents by Inventor George Terrance Walker

George Terrance Walker 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).

  • Patent number: 10876162
    Abstract: The present invention provide methods using genes associated with multi-drug resistance for rapidly detecting a patient colonized or infected with an multi-drug resistant organism and administrating the appropriate precautions and/or treatment.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: December 29, 2020
    Assignee: OPGEN, INC.
    Inventors: George Terrance Walker, Tony Rockweiler, Alex Saeed, Vadim Sapiro, Rossio Kersey
  • Publication number: 20200286590
    Abstract: Systems, apparatus, and methods are disclosed for generating a resistome profile for a subject, monitoring an infection state of one or more subjects, and/or identifying a potential infection outbreak at a facility, for example, by obtaining first data representative of at least one measure of antibiotic resistance of an organism from a first sample, identifying the organism, determining at least one of an antibiotic susceptibility phenotype, an identity of an antibiotic resistance gene, and an antibiotic to which the organism is non-susceptible, generating and comparing a first pattern to at least one known pattern to determine and generate a profile uniqueness identifier indicating a degree of similarity above a threshold between the first pattern and the at least one known pattern.
    Type: Application
    Filed: November 11, 2019
    Publication date: September 10, 2020
    Applicant: OpGen, Inc.
    Inventors: Evan Jones, Vadim Sapiro, George Terrance Walker, Alex Saeed
  • Patent number: 10475526
    Abstract: Systems, apparatus, and methods are disclosed for generating a resistome profile for a subject, monitoring an infection state of one or more subjects, and/or identifying a potential infection outbreak at a facility, for example, by obtaining first data representative of at least one measure of antibiotic resistance of an organism from a first sample, identifying the organism, determining at least one of an antibiotic susceptibility phenotype, an identity of an antibiotic resistance gene, and an antibiotic to which the organism is non-susceptible, generating and comparing a first pattern to at least one known pattern to determine and generate a profile uniqueness identifier indicating a degree of similarity above a threshold between the first pattern and the at least one known pattern.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: November 12, 2019
    Assignee: OpGen, Inc.
    Inventors: Evan Jones, Vadim Sapiro, George Terrance Walker, Alex Saeed
  • Publication number: 20180342310
    Abstract: The present invention provide methods using genes associated with multi-drug resistance for rapidly detecting a patient colonized or infected with an multi-drug resistant organism and administrating the appropriate precautions and/or treatment.
    Type: Application
    Filed: August 6, 2018
    Publication date: November 29, 2018
    Inventors: George Terrance Walker, Tony Rockweiler, Alex Saeed, Vadim Sapiro, Rossio Kersey
  • Publication number: 20170253917
    Abstract: The present invention provides methods, systems, and kits for determining an appropriate therapeutic regimen for treating an infection caused by antibiotic resistant bacteria.
    Type: Application
    Filed: March 7, 2017
    Publication date: September 7, 2017
    Inventors: George Terrance WALKER, Tony ROCKWEILER
  • Publication number: 20160085912
    Abstract: Systems, apparatus, and methods are disclosed for generating a resistome profile for a subject, monitoring an infection state of one or more subjects, and/or identifying a potential infection outbreak at a facility, for example, by obtaining first data representative of at least one measure of antibiotic resistance of an organism from a first sample, identifying the organism, determining at least one of an antibiotic susceptibility phenotype, an identity of an antibiotic resistance gene, and an antibiotic to which the organism is non-susceptible, generating and comparing a first pattern to at least one known pattern to determine and generate a profile uniqueness identifier indicating a degree of similarity above a threshold between the first pattern and the at least one known pattern.
    Type: Application
    Filed: May 27, 2015
    Publication date: March 24, 2016
    Inventors: Evan JONES, Vadim SAPIRO, George Terrance WALKER, Alex SAEED
  • Publication number: 20160053219
    Abstract: Systems, methods, and devices are disclosed for improved temperature control, particularly within a predetermined range of temperatures near or above varying ambient temperatures. Previously-unrealized advantages are recognized for maintaining samples, particularly medical and/or biological specimens, at a temperature within a predetermined range of temperatures near or above ambient temperature that selectively promote and/or selectively inhibit organism growth, organism viability, biochemical reactions, and/or chemical reactions. Systems, methods, and devices may include at least phase change material selected and configured to maintain a sample at a predetermined temperature range between about 22° Celsius and about 100° Celsius during a predetermined time period.
    Type: Application
    Filed: August 25, 2015
    Publication date: February 25, 2016
    Inventors: George Terrance Walker, Tony Rockweiler
  • Publication number: 20150259729
    Abstract: The present invention provide methods using genes associated with multi-drug resistance for rapidly detecting a patient colonized or infected with an multi-drug resistant organism and administrating the appropriate precautions and/or treatment.
    Type: Application
    Filed: March 13, 2015
    Publication date: September 17, 2015
    Inventors: George Terrance Walker, Tony Rockweiler, Alex Saeed, Vadim Sapiro, Rossio Kersey
  • Publication number: 20030104430
    Abstract: Described and disclosed are devices, methods, and compositions of matter for the multiplex amplification and analysis of nucleic acid sequences in a sample using novel strand displacement amplification technologies in combination with bioelectronic microchip technology. Specifically, a nucleic acid in a sample is amplified to form amplicons, the amplicons are addressed to specified electronically addressable capture sites of the bioelectronic microchip, the addressed amplicons are captured and labeled, and then the capture sites are analyzed for the presence of label. Samples may be amplified using strand displacement amplification. The invention is also amenable to other amplification methodologies well known by those skilled in the art. The capture and label steps may be by a method of universal capture with sequence specific reporter, or by a method of sequence specific capture with universal reporter.
    Type: Application
    Filed: July 15, 2002
    Publication date: June 5, 2003
    Inventors: Michael I. Nerenberg, Carl F. Edman, Catherine A. Spargo, George Terrance Walker
  • Patent number: 5744311
    Abstract: Strand Displacement Amplification methods (thermophilic SDA) which can be performed over a broad temperature range (37.degree. C. to 70.degree. C.). The preferred temperature range for thermophilic SDA is 50.degree. C. to 70.degree. C. It has been found that certain thermophilic restriction endonucleases are capable of nicking the hemimodified restriction endonuclease recognition/cleavage site as required by SDA and dissociating from the site. It has further been found that certain thermophilic polymerases are capable of extending from the nick while displacing the downstream strand. Thermophilic SDA, because of reaction temperatures higher than previously possible with conventional SDA enzyme systems, has improved specificity and efficiency, reduced nonspecific background amplification, and potentially improved yields of amplification products.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: April 28, 1998
    Assignee: Becton, Dickinson and Company
    Inventors: Melinda S. Fraiser, Catherine A. Spargo, George Terrance Walker, Mark Van Cleve, David James Wright, Michael C. Little
  • Patent number: 5736365
    Abstract: Primers and methods for adapter-mediated multiplex amplification of the IS6110 insertion element of Mycobacterium tuberculosis (M.tb) and the 16S ribosomal gene of Mycobacterium tuberculosis, useful for simultaneously detecting and/or identifying species of the M. tuberculosis complex and other clinically relevant Mycobacterium species. Multiplex Strand Displacement Amplification (SDA) is used in a single amplification reaction which is capable of simultaneously identifying M. tuberculosis and providing a screen for substantially all of the clinically relevant species of Mycobacteria. Also disclosed are methods for adapter-mediated multiplex amplification of multiple target sequences and a single internal control sequence for determination of sample efficacy or quantitation of the targets.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: April 7, 1998
    Assignee: Becton, Dickinson and Company
    Inventors: George Terrance Walker, James G. Nadeau, Patricia Anne Spears, Colleen M. Nycz, Daryl Dee Shank, James L. Schram, Stewart Russel Jurgensen
  • Patent number: 5712124
    Abstract: This invention relates a nucleic acid target amplification and detection method which operates at a single temperature and makes use of a polymerase in conjunction with an endonuclease that will nick the polymerized strand such that the polymerase will displace the strand without digestion while generating a newly polymerized strand.
    Type: Grant
    Filed: January 18, 1995
    Date of Patent: January 27, 1998
    Assignee: Becton, Dickinson and Company
    Inventor: George Terrance Walker
  • Patent number: 5702926
    Abstract: .alpha.-Boronated deoxynucleoside triphosphates, when incorporated into a double-stranded restriction endonuclease recognition/cleavage site for a restriction endonuclease, induce nicking by the restriction endonuclease. .alpha.-Boronated deoxynucleoside triphosphates (dNTP.alpha.BH.sub.3) are therefore useful as nucleotide analogs in SDA to produce the nickable hemimodified restriction endonuclease recognition/cleavage site required to sustain the amplification reaction.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: December 30, 1997
    Assignee: Becton, Dickinson and Company
    Inventors: Melinda S. Fraiser, George Terrance Walker
  • Patent number: 5648211
    Abstract: Strand Displacement Amplification methods (thermophilic SDA) which can be performed over a broad temperature range (37.degree. C. to 70.degree. C.). The preferred temperature range for thermophilic SDA is 50.degree. C. to 70.degree. C. It has been found that certain thermophilic restriction endonucleases are capable of nicking the hemimodified restriction endonuclease recognition/cleavage site as required by SDA and dissociating from the site. It has further been found that certain thermophilic polymerases are capable of extending from the nick while displacing the downstream strand. Thermophilic SDA, because of reaction temperatures higher than previously possible with conventional SDA enzyme systems, has improved specificity and efficiency, reduced nonspecific background amplification, and potentially improved yields of amplification products.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: July 15, 1997
    Assignee: Becton, Dickinson and Company
    Inventors: Melinda S. Fraiser, Catherine A. Spargo, George Terrance Walker, Mark Van Cleve, David James Wright, Michael C. Little