Patents by Inventor David Diggs

David Diggs 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).

  • CHAIR MECHANISM WITH SELECTIVE AUTO-ROCKING CAPABILITY
    Publication number: 20240122347
    Abstract: A mechanism for a seating unit is provided that allows a reclining mechanism to freely rock on a rocker assembly when a locking actuator is in a first position, and that provides an auto-rocking motion, via a rocking actuator, when the locking actuator is in a second position.
    Type: Application
    Filed: October 9, 2023
    Publication date: April 18, 2024
    Applicant: L&P Property Management Company
    Inventors: David FORGY, Ronald D. DAVIS, David PURSER, Tony DIGGS, Caleb BROWNING
  • Drilling compositions and methods
    Patent number: 6153669
    Abstract: The materials include non-polyampholite crosslinked polymers and gels based on a polymer which in uncrosslinked form is substantially soluble in ionic fluids and substantially insoluble in water. The materials change their state of hydration in response to an environmental trigger. The disclosed materials are useful as drilling, completion or workover fluids in wells such as hydrocarbon producing wells. According to the disclosed method, crosslinked polymers or gels are introduced into a stratum, blocking or bridging the pores of the stratum. Thereafter, an environmental condition is changed to cause the hydrated material to become less hydrated to unblock the pores allowing production from the well.
    Type: Grant
    Filed: January 8, 1999
    Date of Patent: November 28, 2000
    Assignee: Baroid Drilling Fluids, Inc.
    Inventors: David Diggs, Marie Kearney, M. J. Timm, E. C. Lupton, Lev Bromberg, Mara Stein, Barry Hand, Michael Orkisz
  • Drilling compositions and methods
    Patent number: 6110876
    Abstract: The materials include non-polyampholite crosslinked polymers and gels based on a polymer which in uncrosslinked form is substantially soluble in ionic fluids and substantially insoluble in water. The materials change their state of hydration in response to an environmental trigger. The disclosed materials are useful as drilling, completion or workover fluids in wells such as hydrocarbon producing wells. According to the disclosed method, crosslinked polymers or gels are introduced into a stratum, blocking or bridging the pores of the stratum. Thereafter, an environmental condition is changed to cause the hydrated material to become less hydrated to unblock the pores allowing production from the well.
    Type: Grant
    Filed: January 8, 1999
    Date of Patent: August 29, 2000
    Assignee: Baroid Drilling Fluids, Inc.
    Inventors: David Diggs, Marie Kearney, M. J. Timm, E. C. Lupton, Lev Bromberg, Mara Stein, Barry Hand, Michael Orkisz
  • Drilling compositions and methods
    Patent number: 5888943
    Abstract: The materials include non-polyampholite crosslinked polymers and gels based on a polymer which in uncrosslinked form is substantially soluble in ionic fluids and substantially insoluble in water. The materials change their state of hydration in response to an environmental trigger. The disclosed materials are useful as drilling, completion or workover fluids in wells such as hydrocarbon producing wells. According to the disclosed method, crosslinked polymers or gels are introduced into a stratum, blocking or bridging the pores of the stratum. Thereafter, an environmental condition is changed to cause the hydrated material to become less hydrated to unblock the pores allowing production from the well.
    Type: Grant
    Filed: December 11, 1995
    Date of Patent: March 30, 1999
    Assignee: Baroid Drilling Fluids, Inc.
    Inventors: David Diggs, Marie Kearney, M. J. Timm, E. C. Lupton, Lev Bromberg, Mara Stein, Barry Hand, Michael Orkisz