Patents by Inventor David D. Brown

David D. Brown 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).

  • Publication number: 20140262269
    Abstract: A method of providing pressure containment of a well having a well annulus. The well annulus contains a set cement, and the cement contains flow paths which communicate a well pressure to the surface. The method includes placing a containment cement slurry in a reception area at the top of the well and installing an injection delivery system within the reception area. The method may further include preparing a settable fluid for injection into the flow paths and injecting the settable fluid through the injection delivery system into the flow paths. In one disclosed embodiment, the injection delivery system may include a series of injection tubulars configured to deliver the settable fluid to the flow paths. The injection delivery system may include a template having a first, second, third and fourth injection tubular.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Applicant: SUPERIOR ENERGY SERVICES, L.L.C.
    Inventors: Larry Watters, David D. Brown, Sean Hollis
  • Patent number: 6307173
    Abstract: An alloy for making weld gun arm castings comprises about 0.35 to 0.8 wt. % Be, about 0.2 to 0.9 wt. % Co and about 1.5 to 2.4 wt. % Ni, with the balance being Cu and incidental impurities, the (Ni+Co)/Be ratio in the alloy being at least about 4.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: October 23, 2001
    Assignee: Brush Wellman, Inc.
    Inventors: Sabit Ali, David D. Brown, A Murray Patterson
  • Patent number: 6303936
    Abstract: An extraction-scintillation medium of substantially free-flowing, porous, solid particulate matter having one or more fluors retained within the particulate matter and an extraction agent adsorbed on or bound to the surface of the particulate matter. The medium is capable of extracting one of a selected radionuclide from an aqueous stream and permits transmission of light therethrough, which light is emitted from the one or more fluors in response to radiation absorbed thereby from the selected radionuclide. A sensor system using the extraction-scintillation medium for real-time or near real-time detection of the selected radionuclide is also disclosed.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: October 16, 2001
    Assignee: Clemson University
    Inventors: Timothy A. DeVol, Jonathan M. Duffey, James T. Harvey, Joel M. Williamson, David D. Brown, James E. Roane
  • Patent number: 5247647
    Abstract: A virtual lookaside facility maintains named data objects in class-related data spaces by virtual storage, for use by user programs. Concurrently executing service processes use local copies of an access token to access the data in the data spaces. Deletion of one of the data spaces invalidates the access token so that active processes will encounter a program check on access after data deletion. An error recovery means, recognizing the invalid token as cause of the program check, provides an appropriate return code to the invoker of the service process.
    Type: Grant
    Filed: April 29, 1992
    Date of Patent: September 21, 1993
    Assignee: International Business Machines Corp.
    Inventors: David D. Brown, Wayne J. Morschhauser, Rick F. Reinheimer, Michael D. Swanson
  • Patent number: 5210911
    Abstract: A device for rapidly wrapping a bundle of newspapers or magazines to be recycled, consisting of a fiberboard plate having a hole with a string-receiving slit through its major surfaces, and arcuate recesses on opposite edges of the plate, each recess having a string-receiving slit. A string is looped through the hole and around an adjacent edge of the plate, and tied near one end of the string. To wrap the bundle, the other end of the string is passed around the bundle and through the hole, wedged into the corresponding slit, and then passed by each arcuate recess and wedged into each of the corresponding slits.
    Type: Grant
    Filed: July 21, 1992
    Date of Patent: May 18, 1993
    Assignee: Zel Products Inc.
    Inventors: Douglas T. Brown, David D. Brown, Virginia M. Brown
  • Patent number: 5134696
    Abstract: A virtual lookaside faclity is provided for maintaining named data objects in class-related data spaces in virtual storage, readily retrievable by user programs. A search order is associated with each user, specifying an ordered list of "major names" which are, in effect, sequentially searched for a specified "minor name", or data object, to obtain a virtual storage copy of that data object. As data objects are placed into a virtual cache, existence information, implicit in the naming structure, is captured and saved. This information is relied on later in retrieving objects from the cache. The data isolation provided by maintaining class data and control blocks in individual data spaces is exploited to prevent failures relating to one class of objects from affecting the others, and to handle latent program users, following failures, effectively.An LRU-like trimming technique is used to remove less useful objects from the cache when cache space is fully utilized.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: July 28, 1992
    Assignee: International Business Machines Corp.
    Inventors: David D. Brown, Wayne J. Morschhauser, Rick F. Reinheimer, Michael D. Swanson