Patents by Inventor Richard A. Jefferson

Richard A. Jefferson 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: 7176006
    Abstract: Genes encoding microbial ?-glucuronidases and proteins and their uses are provided.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: February 13, 2007
    Assignee: Cambia
    Inventors: Richard A. Jefferson, Jorge E. Mayer
  • Patent number: 7141719
    Abstract: Genes encoding microbial ?-glucuronidase and protein that is secreted and its uses are provided.
    Type: Grant
    Filed: April 11, 2002
    Date of Patent: November 28, 2006
    Assignee: Cambia
    Inventors: Richard A. Jefferson, Rebecca L. Harcourt, Andrzej Kilian, Paul Konrad Keese
  • Patent number: 7087420
    Abstract: Genes encoding microbial?-glucuronidases and proteins and their uses are provided.
    Type: Grant
    Filed: March 16, 2000
    Date of Patent: August 8, 2006
    Assignee: Cambia
    Inventors: Richard A Jefferson, Jorge E Mayer
  • Patent number: 6998229
    Abstract: Clones containing a sequence encoding a glucuronide repressor are described. The nucleotide and amino acid sequences of a repressor (gusR) are presented. A glucuronide repressor is used to control expression of a transgene, detect glucuronides in a sample, and isolate glucuronides from a sample, among other uses.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: February 14, 2006
    Assignee: Monticello Research PTY Limited
    Inventors: Richard A. Jefferson, Katherine J. Wilson
  • Publication number: 20050289672
    Abstract: This invention relates generally to technologies for the transfer of nucleic acids molecules to eukaryotic cells. In particular non-pathogenic species of bacteria that interact with plant cells are used to transfer nucleic acid sequences. The bacteria for transforming plants usually contain binary vectors, such as a plasmid with a vir region of a Ti plasmid and a plasmid with a T region containing a DNA sequence of interest.
    Type: Application
    Filed: September 28, 2004
    Publication date: December 29, 2005
    Inventor: Richard Jefferson
  • Publication number: 20050289667
    Abstract: This invention relates generally to technologies for the transfer of nucleic acids molecules to eukaryotic cells. In particular non-pathogenic species of bacteria that interact with plant cells are used to transfer nucleic acid sequences. The bacteria for transforming plants usually contain binary vectors, such as a plasmid with a vir region of a Ti plasmid and a plasmid with a T region containing a DNA sequence of interest.
    Type: Application
    Filed: September 28, 2004
    Publication date: December 29, 2005
    Inventor: Richard Jefferson
  • Publication number: 20030229921
    Abstract: Genes encoding microbial &bgr;-glucuronidases and proteins and their uses are provided.
    Type: Application
    Filed: February 12, 2003
    Publication date: December 11, 2003
    Applicant: CAMBIA
    Inventors: Richard A. Jefferson, Jorge E. Mayer
  • Patent number: 6641996
    Abstract: Genes encoding microbial &bgr;-glucuronidases and proteins and their uses are provided.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: November 4, 2003
    Assignee: Cambia
    Inventors: Richard A. Jefferson, Jorge E. Mayer
  • Patent number: 6637625
    Abstract: A continuous operation metering valve, based on true volumetric positive displacement technology, uses an innovative dual rack and drive pinion design that enables the valve to dispense from one meter chamber while the other meter chamber is filling. This provides greater dispense cycle rates because it does not require a fill or reload period. With an optional encoder-controlled motor, the inventive metering valve is capable of almost unlimited precision dispensing with “on-the-fly” adjustment capability. The metering valve is easily disassembled and cleaned, using stainless steel wetted path components and Teflon seals for the widest range of chemical compatibility. An integral electronic board, mounted to the side of the valve, may be utilized to control the 4-way directional valve and motor direction (when not using a rotary encoder control).
    Type: Grant
    Filed: April 19, 2001
    Date of Patent: October 28, 2003
    Assignee: Delaware Capital Formation
    Inventor: Richard Jefferson
  • Publication number: 20030157684
    Abstract: Genes encoding microbial &bgr;-glucuronidase and protein that is secreted and its uses are provided.
    Type: Application
    Filed: April 11, 2002
    Publication date: August 21, 2003
    Applicant: CAMBIA
    Inventors: Richard A. Jefferson, Rebecca L. Harcourt, Andrzej Kilian, Katherine Joanna Wilson, Paul Konrad Keese
  • Publication number: 20030143709
    Abstract: Clones containing a sequence encoding a glucuronide repressor are described. The nucleotide and amino acid sequences of a repressor (gusR) are presented. A glucuronide repressor is used to control expression of a transgene, detect glucuronides in a sample, and isolate glucuronides from a sample, among other uses.
    Type: Application
    Filed: July 16, 2002
    Publication date: July 31, 2003
    Applicant: CAMBIA
    Inventors: Richard A. Jefferson, Katherine J. Wilson
  • Patent number: 6429292
    Abstract: Clones containing a sequence encoding a glucuronide repressor are described. The nucleotide and amino acid sequences of a repressor (gusR) are presented. A glucuronide repressor is used to control expression of a transgene, detect glucuronides in a sample, and isolate glucuronides from a sample, among other uses.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: August 6, 2002
    Inventors: Richard A. Jefferson, Katherine J. Wilson, Michael Leader
  • Patent number: 6391547
    Abstract: Genes encoding microbial &bgr;-glucuronidase and protein that is secreted and its uses are provided.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: May 21, 2002
    Assignee: Center for the Application of Molecular Biology to International Agriculture
    Inventors: Richard A. Jefferson, Rebecca Louise Harcourt, Andrzej Kilian, Katherine Joanna Wilson, Paul Konrad Keese
  • Publication number: 20010021774
    Abstract: Cellobiuronic acid may be prepared by hydrolysis of gellan. The method provides embodiments expressed in terms of amounts of cellobiuronic acid produced, amounts of gellan gum hydrolyzed and amounts of cellobiuronic acid present in fractions of a hydrolysate The method may further include isolation of a separated fraction of the hydrolysate where the separated fraction comprises cellobiuronic acid. A preferred embodiment of the method includes hydrolyzing gellan gum with a protic acid under reaction conditions that convert at least 95 wt.% of the gellan gum to a hydrolysate comprised of cellobiuronic acid and monosaccharides and isolating a separated fraction of the hydrolysate where cellobiuronic acid comprises at least a 95 wt.% of saccharides in the separated fraction.
    Type: Application
    Filed: May 23, 2001
    Publication date: September 13, 2001
    Inventor: Richard A. Jefferson
  • Patent number: 6268493
    Abstract: Cellobiuronic acid may be prepared by hydrolysis of gellan. The method provides embodiments expressed in terms of amounts of cellobiuronic acid produced, amounts of gellan gum hydrolyzed and amounts of cellobiuronic acid present in fractions of a hydrolysate The method may further include isolation of a separated fraction of the hydrolysate where the separated fraction comprises cellobiuronic acid. A preferred embodiment of the method includes hydrolyzing gellan gum with a protic acid under reaction conditions that convert at least 95 wt. % of the gellan gum to a hydrolysate comprised of cellobiuronic acid and monosaccharides and isolating a separated fraction of the hydrolysate where cellobiuronic acid comprises at least a 95 wt. % of saccharides in the separated fraction.
    Type: Grant
    Filed: August 7, 1998
    Date of Patent: July 31, 2001
    Assignee: Center for the Application of Molecular Biology to International Agriculture
    Inventor: Richard A. Jefferson
  • Patent number: 5879906
    Abstract: Clones containing a sequence encoding a glucuronide repressor are described. The nucleotide and amino acid sequences of a repressor (gusR) are presented. A glucuronide repressor is used to control expression of a transgene, detect glucuronides in a sample, and isolate glucuronides from a sample, among other uses.
    Type: Grant
    Filed: June 25, 1997
    Date of Patent: March 9, 1999
    Assignee: Cambia Biosystems LLC
    Inventors: Richard A. Jefferson, Katherine J. Wilson, Michael Leader
  • Patent number: 5599670
    Abstract: The present invention relates to the .beta.-glucuronidase (GUS) gene fusion system, and to the cloning and characterization of the .beta.-glucuronidase and glucuronide permease genes of Escherichia coli. It is based on the surprising discovery that gene fusions comprising the .beta.-glucuronidase gene may be effectively expressed in a wide variety of organisms to produce active .beta.-glucuronidase enzyme. Because of the abundance and availability of useful substrates for .beta.-glucuronidase enzyme, GUS gene fusions may serve as a superior reporter gene system as well as an effective means of altering cellular phenotype. In conjunction with recombinant glucuronide permease, which may be used to render host cells permeable to .beta.-glucuronidase substrates, the GUS gene fusion system offers almost unlimited applications in the fields of plant and animal genetic engineering.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: February 4, 1997
    Assignee: Cambia Biosystems. L.L.C.
    Inventor: Richard A. Jefferson
  • Patent number: 5432081
    Abstract: The present invention relates to the .beta.-glucuronidase (GUS) gene fusion system, and to the cloning and characterization of the .beta.-glucuronidase and glucuronide permease genes of Escherichia coli. It is based on the surprising discovery that gene fusions comprising the .beta.-glucuronidase gene may be effectively expressed in a wide variety of organisms to produce active .beta.-glucuronidase enzyme. Because of the abundance and availability of useful substrates for .beta.-glucuronidase enzyme, GUS gene fusions may serve as a superior reporter gene system as well as an effective means of altering cellular phenotype. In conjunction with recombinant glucuronide permease, which may be used to render host cells permeable to .beta.-glucuronidase substrates, the GUS gene fusion system offers almost unlimited applications in the fields of plant and animal genetic engineering.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: July 11, 1995
    Assignee: Cambia Biosystems, L.L.C.
    Inventor: Richard A. Jefferson
  • Patent number: 5268463
    Abstract: The present invention relates to the .beta.-glucuronidase (GUS) gene fusion system, and to the cloning and characterization of the .beta.-glucuronidase and glucuronide permease genes of Escherichia coli. It is based on the surprising discovery that gene fusions comprising the .beta.-glucuronidase gene may be effectively expressed in a wide variety of organisms to produce active .beta.-glucuronidase enzyme. Because of the abundance and availability of useful substrates for .beta.-glucuronidase enzyme, GUS gene fusions may serve as a superior reporter gene system as well as an effective means of altering cellular phenotype. In conjunction with recombinant glucuronide permease, which may be used to render host cells permeable to .beta.-glucuronidase substrates, the GUS gene fusion system offers almost unlimited applications in the fields of plant and animal genetic engineering.
    Type: Grant
    Filed: December 8, 1989
    Date of Patent: December 7, 1993
    Inventor: Richard A. Jefferson