Patents by Inventor Douglas C. Murdock

Douglas C. Murdock 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: 11883776
    Abstract: Several embodiments of the present technology are directed to the removal of one or more air pollutants using cooling and/or calcium-containing particles. In some embodiments, a method for removing air pollutants comprises flowing a gas stream having calcium-containing particles and one or more of mercury or hydrochloric acid molecules, and cooling the gas stream, thereby causing at least a portion of the calcium-containing particles to adsorb to the mercury and/or hydrochloric acid molecules in the gas stream. The method can further comprise, after cooling the gas stream, filtering the gas stream to remove at least a portion of the calcium-containing particles having adsorbed mercury and hydrochloric acid.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: January 30, 2024
    Assignee: Graymont (PA) Inc.
    Inventors: Harold Wayne Lee, II, Laura L. Kinner, Douglas C. Murdock, Fred Douglas Blackham, John B. Heintzelman
  • Publication number: 20210106942
    Abstract: Several embodiments of the present technology are directed to the removal of one or more air pollutants using cooling and/or calcium-containing particles. In some embodiments, a method for removing air pollutants comprises flowing a gas stream having calcium-containing particles and one or more of mercury or hydrochloric acid molecules, and cooling the gas stream, thereby causing at least a portion of the calcium-containing particles to adsorb to the mercury and/or hydrochloric acid molecules in the gas stream. The method can further comprise, after cooling the gas stream, filtering the gas stream to remove at least a portion of the calcium-containing particles having adsorbed mercury and hydrochloric acid.
    Type: Application
    Filed: December 21, 2020
    Publication date: April 15, 2021
    Inventors: Harold Wayne Lee, II, Laura L. Kinner, Douglas C. Murdock, Fred Douglas Blackham, John B. Heintzelman
  • Patent number: 10898851
    Abstract: Several embodiments of the present technology are directed to the removal of one or more air pollutants using cooling and/or calcium-containing particles. In some embodiments, a method for removing air pollutants comprises flowing a gas stream having calcium-containing particles and one or more of mercury or hydrochloric acid molecules, and cooling the gas stream, thereby causing at least a portion of the calcium-containing particles to adsorb to the mercury and/or hydrochloric acid molecules in the gas stream. The method can further comprise, after cooling the gas stream, filtering the gas stream to remove at least a portion of the calcium-containing particles having adsorbed mercury and hydrochloric acid.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: January 26, 2021
    Assignee: Graymont (PA) Inc.
    Inventors: Harold Wayne Lee, II, Laura L. Kinner, Douglas C. Murdock, Fred Douglas Blackham, John B. Heintzelman
  • Publication number: 20190039012
    Abstract: Several embodiments of the present technology are directed to the removal of one or more air pollutants using cooling and/or calcium-containing particles. In some embodiments, a method for removing air pollutants comprises flowing a gas stream having calcium-containing particles and one or more of mercury or hydrochloric acid molecules, and cooling the gas stream, thereby causing at least a portion of the calcium-containing particles to adsorb to the mercury and/or hydrochloric acid molecules in the gas stream. The method can further comprise, after cooling the gas stream, filtering the gas stream to remove at least a portion of the calcium-containing particles having adsorbed mercury and hydrochloric acid.
    Type: Application
    Filed: July 6, 2018
    Publication date: February 7, 2019
    Inventors: Harold Wayne Lee, II, Laura L. Kinner, Douglas C. Murdock, Fred Douglas Blackham, John B. Heintzelman
  • Publication number: 20150210389
    Abstract: Disclosed is a soaring platform that is based on biomimicry of soaring bird species and provides bird-like steering modalities and includes an air foil made of feather-like battens, articulating wings, a rudder, and modalities to manipulate the leading edge of the platform's wing spars as well as change in the wings shape in-flight.
    Type: Application
    Filed: May 16, 2013
    Publication date: July 30, 2015
    Inventor: Douglas C. MURDOCK
  • Patent number: 5590825
    Abstract: Disclosed is a lightweight backpack and its frame. The design of the frame accommodates use as a structure for shaping and supporting a recreational hiking or military infantry backpack while in a folded and compact arrangement, and additionally, accommodates use for shaping and supporting material for use as a sleeping cot able to support the body weight of a human while in and unfolded elongated arrangement. In either the folded or unfolded arrangement, the backpack may be easily removed or reattached to the frame. The cot material is also easily detachable for purposes of replacement of worn material and its arrangement in conjunction with the frame is also intended to serve in part as padding and back support for the wearer. The hinge and lock at the frame's hinge joints aids the user in fold out and break down of the frame and also adds strength to the frame while in both the folded and unfolded position.
    Type: Grant
    Filed: July 17, 1995
    Date of Patent: January 7, 1997
    Inventor: Douglas C. Murdock
  • Patent number: 5494816
    Abstract: DNA molecules encoding a modified tryptophan synthase beta subunit are disclosed. When expressed in a recombinant host microorganism, these polypeptide analogs enable significant levels of intracellular indole production and accumulation. In the presence of an aromatic dioxygenase enzyme, the indole so produced can be converted to indoxyl, which upon exposure to air oxidizes to indigo.
    Type: Grant
    Filed: June 21, 1994
    Date of Patent: February 27, 1996
    Assignee: Amgen Inc.
    Inventor: Douglas C. Murdock
  • Patent number: 5374543
    Abstract: DNA molecules encoding a modified tryptophan synthase beta subunit are disclosed. When expressed in a recombinant host microorganism, these polypeptide analogs enable significant levels of intracellular indole production and accumulation. In the presence of an aromatic dioxygenase enzyme, the indole so produced can be converted to indoxyl, which upon exposure to air oxidizes to indigo.
    Type: Grant
    Filed: October 2, 1992
    Date of Patent: December 20, 1994
    Assignee: Amgen Inc.
    Inventor: Douglas C. Murdock
  • Patent number: 5173425
    Abstract: This invention relates to a process for the enhancement of naphthalene dioxygenase activity in organisms that have been transformed with DNA encoding the expression of a multiple component naphthalene dioxygenase enzyme. Cells containing the naphthalene dioxygenase enzyme are capable of producing indigo when cultured in the presence of indole. The invention includes procedures to enhance naphthalene dioxygenase activity by transforming a host cell with a DNA sequence that encodes at least two ferredoxin polypeptides for each reductase polypeptide and iron-sulfur polypeptide, by growing transformed organisms in the presence of iron, or by transforming a host cell with a DNA sequence that encodes a ferredoxin analog.
    Type: Grant
    Filed: August 4, 1989
    Date of Patent: December 22, 1992
    Assignee: Amgen Inc.
    Inventors: Cuneyt M. Serdar, Douglas C. Murdock, Burt D. Ensley, Jr.