Patents by Inventor Douglas E. Rawlings

Douglas E. Rawlings 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).

  • Construction of arsenic resistance vectors for Thiobacillus ferrooxidans
    Patent number: 4748118
    Abstract: A process for constructing the plasmids pDR416 and pDR420 which contain arsenic resistance genes and which are able to replicate in both T. ferroxidans and E. coli comprises preparing a recombinant of pBR325 or the like and a T. ferrooxidans plasmid, forming a deletion plasmid and inserting arsenic resistance genes e.g. from R46 by EcoR1 excision and ligation.
    Type: Grant
    Filed: November 1, 1984
    Date of Patent: May 31, 1988
    Assignee: General Mining Union Corporation Limited
    Inventors: Douglas E. Rawlings, David R. Woods
  • Construction of selectable shuttle cloning vectors for Thiobacillus ferrooxidans
    Patent number: 4711849
    Abstract: The plasmids pDR401 and pDR412 are disclosed which contain a selectable chloramphenicol resistance gene and which are able to replicate in both T. ferrooxidans and E. coli. A process for constructing the plasmids is also described.
    Type: Grant
    Filed: November 1, 1984
    Date of Patent: December 8, 1987
    Assignee: General Mining Union Corporation, Limited
    Inventors: Douglas E. Rawlings, David R. Woods