Patents by Inventor Cheryl B. Francisco

Cheryl B. Francisco 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: 8236515
    Abstract: Methods are provided for detection of concentrations of less than 3.4 picomolar of adenosine triphosphate (ATP) using recombinant luciferase in the luciferin-luciferase reaction. Aspects include a low pH composition for use in detecting the presence of ATP. The low pH composition can include low concentrations of detergents and can be used in combination with methods for reading, calculating and interpreting luminescence generated by the ATP-luciferin-luciferase reaction.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: August 7, 2012
    Assignee: Charm Sciences, Inc.
    Inventors: Stanley E. Charm, Cheryl B. Francisco, Robert J. Markovsky, Robert S. Salter, Steven J. Saul
  • Publication number: 20110065116
    Abstract: Methods are provided for detection of concentrations of less than 3.4 picomolar of adenosine triphosphate (ATP) using recombinant luciferase in the luciferin-luciferase reaction. Aspects include a low pH composition for use in detecting the presence of ATP. The low pH composition can include low concentrations of detergents and can be used in combination with methods for reading, calculating and interpreting luminescence generated by the ATP-luciferin-luciferase reaction.
    Type: Application
    Filed: September 27, 2010
    Publication date: March 17, 2011
    Inventors: Stanley E. Charm, Cheryl B. Francisco, Robert J. Markovsky, Robert S. Salter, Steven J. Saul
  • Patent number: 7824878
    Abstract: Methods are provided for sensitive detection of adenosine triphosphate (ATP) in samples using the luciferin-luciferase reaction. Aspects include using a pH composition that maximizes a signal to noise ratio. The maximum signal to noise ratio can be particularly useful with recombinant luciferase including recombinant Coleoptera luciferase.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: November 2, 2010
    Assignee: Charm Sciences, Inc.
    Inventors: Stanley E. Charm, Cheryl B. Francisco, Robert J. Markovsky, Robert S. Salter, Steven J. Saul
  • Publication number: 20090148852
    Abstract: Methods are provided for sensitive detection of adenosine triphosphate (ATP) in samples using the luciferin-luciferase reaction. Aspects include using a pH composition that maximizes a signal to noise ratio. The maximum signal to noise ratio can be particularly useful with recombinant luciferase including recombinant Coleoptera luciferase.
    Type: Application
    Filed: January 9, 2009
    Publication date: June 11, 2009
    Inventors: Stanley E. Charm, Cheryl B. Francisco, Robert J. Markovsky, Robert S. Salter, Steven J. Saul
  • Patent number: 7494781
    Abstract: Methods, devices and systems are provided for detection of adenosine triphosphate (ATP) in samples using the luciferin-luciferase reaction. Aspects include a low pH composition for use in detecting the presence of ATP. The low pH composition can include low molarity buffers and detergents and can be used in combination with methods for reading, calculating and interpreting luminescence generated by the ATP-luciferin-luciferase reaction. Both the low molarity and low pH composition, and the methods for reading, calculating and interpreting luminescence, can be used with a single service hygiene monitoring format.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: February 24, 2009
    Assignee: Charm Sciences, Inc.
    Inventors: Stanley E. Charm, Cheryl B. Francisco, Robert J. Markovsky, Robert S. Salter, Steven J. Saul
  • Patent number: 7229783
    Abstract: A test method and test device for hygiene monitoring of a test sample from a biological material or a surface with a biological material to detect the presence of phosphate and glucose as a measure of hygiene by employing a swab-type, puncturable-membrane test apparatus or a lateral-flow or capillary-flow test apparatus.
    Type: Grant
    Filed: August 1, 2001
    Date of Patent: June 12, 2007
    Assignee: Charm Sciences, Inc.
    Inventors: Steven J. Saul, Cheryl B. Francisco, Robert J. Markovsky, Robert S. Salter, Stanley E. Charm
  • Patent number: 7132249
    Abstract: Methods, devices and systems are provided for detection of adenosine triphosphate (ATP) in samples using the luciferin-luciferase reaction. An aspect of the invention includes a low molarity and low pH composition for use in detecting the presence of ATP. The low molarity and low pH composition can be used in combination with methods for reading, calculating and interpreting luminescence generated by the ATP-luciferin-luciferase reaction. Both the low molarity, low pH composition and the methods for reading, calculating and interpreting luminescence can be used with a single service hygiene monitoring format.
    Type: Grant
    Filed: May 11, 2004
    Date of Patent: November 7, 2006
    Assignee: Charm Sciences, Inc.
    Inventors: Robert S. Salter, Stanley E. Charm, Cheryl B. Francisco, Robert J. Markovsky, Steven J. Saul
  • Publication number: 20040028608
    Abstract: A test method and test device for hygiene monitoring of a test sample from a biological material or a surface with a biological material to detect the presence of phosphate and glucose as a measure of hygiene by employing a swab-type, puncturable-membrane test apparatus or a lateral-flow or capillary-flow test apparatus.
    Type: Application
    Filed: August 1, 2003
    Publication date: February 12, 2004
    Inventors: Steven J Saul, Cheryl B. Francisco, Robert J. Markovsky, Robert S. Salter, Stanley E. Charm