Patents by Inventor Rexford Hayes

Rexford Hayes 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).

  • Process and equipment for plasmid purification
    Patent number: 8236495
    Abstract: A scalable alkaline lysis process, including procedures and devices for the isolation of large quantities (grams and kilograms) of plasmid DNA from recombinant E. coli cells. Effective, controllable, and economical operation, and consistent low level of host chromosomal DNA in the final plasmid product. Involves a series of new unit operations and devices for cell resuspension, cell lysis, and neutralization.
    Type: Grant
    Filed: January 9, 2006
    Date of Patent: August 7, 2012
    Inventors: Samuel Nochumson, Ross Durland, Audrey Yu-Speight, John Welp, Kuowei Wu, Rexford Hayes
  • Process and equipment for plasmid purfication
    Publication number: 20060106208
    Abstract: A scalable alkaline lysis process, including procedures and devices for the isolation of large quantities (grams and kilograms) of plasmid DNA from recombinant E. coli cells. Effective, controllable, and economical operation, and consistent low level of host chromosomal DNA in the final plasmid product. Involves a series of new unit operations and devices for cell resuspension, cell lysis, and neutralization.
    Type: Application
    Filed: January 9, 2006
    Publication date: May 18, 2006
    Applicant: Valentis, Inc
    Inventors: Samuel Nochumson, Ross Durland, Audrey Yu-Speight, John Welp, Kuoewi Wu, Rexford Hayes
  • Process and equipment for plasmid purification
    Patent number: 7026468
    Abstract: A scalable alkaline lysis process, including procedures and devices for the isolation of large quantities (grams and kilograms) of plasmid DNA from recombinant E. coli cell. Effective, contgrollable, and economical operation, and consistent low level of host chromosomal DNA in the final plasmid product. Involves a series of new unit operations and devices for cell resuspension, cell lysis, and nuetralization.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: April 11, 2006
    Assignee: Valentis, Inc.
    Inventors: Samuel Nochumson, Ross Durland, Audrey Yu-Speight, John Welp, Kuoewi Wu, Rexford Hayes
  • Process and equipment for plasmid purification
    Publication number: 20010034435
    Abstract: A scalable alkaline lysis process, including procedures and devices for the isolation of large quantities (grams and kilograms) of plasmid DNA from recombinant E. coli cells. Effective, controllable, and economical operation, and consistent low level of host chromosomal DNA in the final plasmid product. Involves a series of new unit operations and devices for cell resuspension, cell lysis, and neutralization.
    Type: Application
    Filed: January 29, 2001
    Publication date: October 25, 2001
    Applicant: Valentis, Inc.
    Inventors: Samuel Nochumson, Ross Durland, Audrey Yu-Speight, John Welp, Kuoewi Wu, Rexford Hayes