Patents by Inventor P. Northrop

P. Northrop 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: 20080034789
    Abstract: A method for hydrocarbon processing is provided. In one or more embodiments, the method includes splitting a hydrocarbon stream comprising natural gas and acid gas into a first stream and a second stream. Alternatively, the first stream and second stream may be provided from other sources. The first stream is processed to remove a portion of the acid gas therefrom, thereby producing a third stream comprising the acid gas removed from the first stream and a fourth stream comprising less than 100 ppm of sulfur-containing compounds. The second stream is combined with the third stream to provide a combined stream, which is compressed and reinjected into a subterranean reservoir.
    Type: Application
    Filed: October 19, 2005
    Publication date: February 14, 2008
    Inventors: Eleanor Fieler, P. Northrop, Peter Rasmussen, Edward Grave
  • Patent number: 7300327
    Abstract: A method for constructing a scotopic after-glow lamp for use in an electric lamp with the scotopic lamp having a lamp wall is provided. The method comprises combining scotopic enhanced phosphors with after-glow phosphors, and layering the combined phosphors on the lamp wall with at least a portion of the after-glow phosphors being against the lamp wall and at least a portion of the scotopic phosphors being exposed to the electric arc of the lamp.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: November 27, 2007
    Inventors: Charles Bolta, Donald P. Northrop
  • Patent number: 6917154
    Abstract: A scotopic after-glow lamp for maximizing an eye's ability to see under low light conditions is provided. The scotopic after-glow lamp comprises a non-uniform scotopic phosphor blend of scotopic enhanced phosphors and after-glow phosphors. A method for constructing a scotopic after-glow lamp for use in an electric lamp is also provided. The method comprises combining scotopic enhanced phosphors with after-glow phosphors and layering the combined phosphors on the lamp wall with at least a portion of the after-glow phosphors being against the lamp wall and at least a portion of the scotopic phosphors being exposed to the electric arc of the lamp. Protective layers, such as aluminum oxide powder, can be added in conjunction with the coating process to reduce the flaking and/or separation of the phosphors from the glass wall of the lamp and each other and enhance and lengthen the useful light production of the lamp as it ages.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: July 12, 2005
    Inventors: Charles Bolta, Donald P. Northrop
  • Patent number: 6875571
    Abstract: The invention provides novel polypeptides which are associated with the transcription complex NF-AT, polynucleotides encoding such polypeptides, antibodies which are reactive with such polypeptides, polynucleotide hybridization probes and PCR amplification probes for detecting polynucleotides which encode such polypeptides, transgenes which encode such polypeptides, homologous targeting constructs that encode such polypeptides and/or homologously integrate in or near endogenous genes encoding such polypeptides, nonhuman transgenic animals which comprise functionally disrupted endogenous genes that normally encode such polypeptides, and transgenic nonhuman animals which comprise transgenes encoding such polypeptides.
    Type: Grant
    Filed: January 7, 2002
    Date of Patent: April 5, 2005
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Gerald R. Crabtree, Jeffrey P. Northrop, Steffan N. Ho, William M. Flanagan
  • Publication number: 20030160560
    Abstract: A scotopic after-glow lamp for maximizing an eye's ability to see under low light conditions is provided. The scotopic after-glow lamp comprises a non-uniform scotopic phosphor blend of scotopic enhanced phosphors and after-glow phosphors. A method for constructing a scotopic after-glow lamp for use in an electric lamp is also provided. The method comprises combining scotopic enhanced phosphors with after-glow phosphors and layering the combined phosphors on the lamp wall with at least a portion of the after-glow phosphors being against the lamp wall and at least a portion of the scotopic phosphors being exposed to the electric arc of the lamp. Protective layers, such as aluminum oxide powder, can be added in conjunction with the coating process to reduce the flaking and/or separation of the phosphors from the glass wall of the lamp and each other and enhance and lengthen the useful light production of the lamp as it ages.
    Type: Application
    Filed: February 25, 2003
    Publication date: August 28, 2003
    Inventors: Charles Bolta, Donald P. Northrop
  • Publication number: 20030056229
    Abstract: The invention provides novel polypeptides which are associated with the transcription complex NF-AT, polynucleotides encoding such polypeptides, antibodies which are reactive with such polypeptides, polynucleotide hybridization probes and PCR amplification probes for detecting polynucleotides which encode such polypeptides, transgenes which encode such polypeptides, homologous targeting constructs that encode such polypeptides and/or homologously integrate in or near endogenous genes encoding such polypeptides, nonhuman transgenic animals which comprise functionally disrupted endogenous genes that normally encode such polypeptides, and transgenic nonhuman animals which comprise transgenes encoding such polypeptides.
    Type: Application
    Filed: July 7, 1999
    Publication date: March 20, 2003
    Inventors: GERALD R. CRABTREE, JEFFREY P. NORTHROP, STEFFAN N. HO
  • Publication number: 20030049641
    Abstract: The invention provides novel polypeptides which are associated with the transcription complex NF-AT, polynucleotides encoding such polypeptides, antibodies which are reactive with such polypeptides, polynucleotide hybridization probes and PCR amplification probes for detecting polynucleotides which encode such polypeptides, transgenes which encode such polypeptides, homologous targeting constructs that encode such polypeptides and/or homologously integrate in or near endogenous genes encoding such polypeptides, nonhuman transgenic animals which comprise functionally disrupted endogenous genes that normally encode such polypeptides, and transgenic nonhuman animals which comprise transgenes encoding such polypeptides.
    Type: Application
    Filed: January 7, 2002
    Publication date: March 13, 2003
    Inventors: Gerald R. Crabtree, Jeffrey P. Northrop, Steffan N. Ho, William M. Flanagan
  • Patent number: 6410245
    Abstract: The invention provides methods for identifying agents that are ligands for nuclear receptors. The methods include conducting multiplexed assays utilizing positive hybrid systems, reverse hybrid systems, direct interaction assays and other assays to screen for ligands having activity with a receptor of interest. The methods can be performed in various multiplexing formats to produce a profile that can be used to categorize a test ligand relative to known agonists and antagonists.
    Type: Grant
    Filed: April 1, 1998
    Date of Patent: June 25, 2002
    Assignee: Affymax, Inc.
    Inventors: Jeffrey P. Northrop, Charles P. Hart, Peter J. Schatz
  • Patent number: 6388052
    Abstract: The invention provides novel polypeptides which are associated with the transcription complex NF-AT, polynucleotides encoding such polypeptides, antibodies which are reactive with such polypeptides, polynucleotide hybridization probes and PCR amplification probes for detecting polynucleotides which encode such polypeptides, transgenes which encode such polypeptides, homologous targeting constructs that encode such polypeptides and/or homologously integrate in or near endogenous genes encoding such polypeptides, nonhuman transgenic animals which comprise functionally disrupted endogenous genes that normally encode such polypeptides, and transgenic nonhuman animals which comprise transgenes encoding such polypeptides.
    Type: Grant
    Filed: March 9, 1998
    Date of Patent: May 14, 2002
    Assignee: Board of Trustees of the Leland Stanford Junior University
    Inventors: Gerald R. Crabtree, Jeffrey P. Northrop, Steffan N. Ho
  • Patent number: 6352830
    Abstract: The invention provides novel polypeptides which are associated with the transcription complex NF-AT, polynucleotides encoding such polypeptides, antibodies which are reactive with such polypeptides, polynucleotide hybridization probes and PCR amplification probes for detecting polynucleotides which encode such polypeptides, transgenes which encode such polypeptides, homologous targeting constructs that encode such polypeptides and/or homologously integrate in or near endogenous genes encoding such polypeptides, nonhuman transgenic animals which comprise functionally disrupted endogenous genes that normally encode such polypeptides, and transgenic nonhuman animals which comprise transgenes encoding such polypeptides.
    Type: Grant
    Filed: January 15, 1999
    Date of Patent: March 5, 2002
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Gerald R. Crabtree, Jeffrey P. Northrop, Steffan N. Ho, William M. Flanagan
  • Patent number: 6312899
    Abstract: The invention provides novel polypeptides which are associated with the transcription complex NF-AT, polynucleotides encoding such polypeptides, antibodies which are reactive with such polypeptides, polynucleotide hybridization probes and PCR amplification probes for detecting polynucleotides which encode such polypeptides, transgenes which encode such polypeptides, homologous targeting constructs that encode such polypeptides and/or homologously integrate in or near endogenous genes encoding such polypeptides, nonhuman transgenic animals which comprise functionally disrupted endogenous genes that normally encode such polypeptides, and transgenic nonhuman animals which comprise transgenes encoding such polypeptides.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: November 6, 2001
    Assignee: Board of Trustees of the Leland Stanford Junior University
    Inventors: Gerald R. Crabtree, Jeffrey P. Northrop, Steffan N. Ho
  • Patent number: 6197925
    Abstract: The invention provides novel polypeptides which are associated with the transcription complex NF-AT, polynucleotides encoding such polypeptides, antibodies which are reactive with such polypeptides, polynucleotide hybridization probes and PCR amplification probes for detecting polynucleotides which encode such polypeptides, transgenes which encode such polypeptides, homologous targeting constructs that encode such polypeptides and/or homologously integrate in or near endogenous genes encoding such polypeptides, nonhuman transgenic animals which comprise functionally disrupted endogenous genes that normally encode such polypeptides, and transgenic nonhuman animals which comprise transgenes encoding such polypeptides.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: March 6, 2001
    Assignee: Sara Lee Corporation
    Inventors: Gerald R. Crabtree, Jeffrey P. Northrop, Steffan N. Ho
  • Patent number: 6171781
    Abstract: The invention provides novel polypeptides which are associated with the transcription complex NF-AT, polynucleotides encoding such polypeptides, antibodies which are reactive with such polypeptides, polynucleotide hybridization probes and PCR amplification probes for detecting polynucleotides which encode such polypeptides, transgenes which encode such polypeptides, homologous targeting constructs that encode such polypeptides and/or homologously integrate in or near endogenous genes encoding such polypeptides, nonhuman transgenic animals which comprise functionally disrupted endogenous genes that normally encode such polypeptides, and transgenic nonhuman animals which comprise transgenes encoding such polypeptides.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: January 9, 2001
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Gerald R. Crabtree, Jeffrey P. Northrop, Steffan N. Ho
  • Patent number: 6150099
    Abstract: The invention provides novel polypeptides which are associated with the transcription complex NF-AT, polynucleotides encoding such polypeptides, antibodies which are reactive with such polypeptides, polynucleotide hybridization probes and PCR amplification probes for detecting polynucleotides which encode such polypeptides, transgenes which encode such polypeptides, homologous targeting constructs that encode such polypeptides and/or homologously integrate in or near endogenous genes encoding such polypeptides, nonhuman transgenic animals which comprise functionally disrupted endogenous genes that normally encode such polypeptides, and transgenic nonhuman animals which comprise transgenes encoding such polypeptides.
    Type: Grant
    Filed: March 9, 1998
    Date of Patent: November 21, 2000
    Assignee: Board of Trustees of the Leland Stanford Junior University
    Inventors: Gerald R. Crabtree, Jeffrey P. Northrop, Steffan N. Ho
  • Patent number: 6096515
    Abstract: The invention provides novel polypeptides which are associated with the transcription complex NF-AT, polynucleotides encoding such polypeptides, antibodies which are reactive with such polypeptides, polynucleotide hybridization probes and PCR amplification probes for detecting polynucleotides which encode such polypeptides, transgenes which encode such polypeptides, homologous targeting constructs that encode such polypeptides and/or homologously integrate in or near endogenous genes encoding such polypeptides, nonhuman transgenic animals which comprise functionally disrupted endogenous genes that normally encode such polypeptides, and transgenic nonhuman animals which comprise transgenes encoding such polypeptides.
    Type: Grant
    Filed: March 9, 1998
    Date of Patent: August 1, 2000
    Assignee: Board of Trustees of the Leland Stanford Junior University
    Inventors: Gerald R. Crabtree, Jeffrey P. Northrop, Steffan N. Ho
  • Patent number: 5837840
    Abstract: The invention provides novel polypeptides which are associated with the transcription complex NF-AT, polynucleotides encoding such polypeptides, antibodies which are reactive with such polypeptides, polynucleotide hybridization probes and PCR amplification probes for detecting polynucleotides which encode such polypeptides, transgenes which encode such polypeptides, homologous targeting constructs that encode such polypeptides and/or homologously integrate in or near endogenous genes encoding such polypeptides, nonhuman transgenic animals which comprise functionally disrupted endogenous genes that normally encode such polypeptides, and transgenic nonhuman animals which comprise transgenes encoding such polypeptides.
    Type: Grant
    Filed: September 20, 1993
    Date of Patent: November 17, 1998
    Assignee: Board of Trustees of Leland Stanford Jr. University
    Inventors: Gerald R. Crabtree, Jeffrey P. Northrop
  • Patent number: 5498924
    Abstract: A fluorescent lamp that has a T10 outer diameter which is capable of operating on ballasts of both the T8 and T12 types. In addition to the T10 diameter, the lamp has at least one groove in its wall to reduce the envelope cross-section, a fill gas of neon and argon, preferably 25% neon and 75% argon and a controlled amount of mercury.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 12, 1996
    Assignee: Duro-Test Corp.
    Inventor: Donald P. Northrop
  • Patent number: 4924368
    Abstract: A shatter-containment fluorescent lamp having a protective plastic sleeve in which the sleeve is attached by an adhesive at each end of the lamp envelope in a manner to provide a controlled air space between the glass lamp envelope and the plastic sleeve to prevent direct transmission of stresses from the envelope to the sleeve. The sleeve is also attached to the lamp base by the adhesive so that there is integral connection of the sleeve and the base at each end of the envelope. A retaining ring, also held by the adhesive, covers the base. In a preferred embodiment of the invention, the retaining ring inner surface and the lamp base having mating members to align the retaining ring on the base. In another embodiment, the sleeve has a number of angled slots around its circumference at each end and there are corresponding locking teeth on a retaining ring to accommodate for variations in lamp envelope/protective sleeve length.
    Type: Grant
    Filed: January 6, 1989
    Date of Patent: May 8, 1990
    Assignee: Duro-Test Corporation
    Inventors: Donald P. Northrop, David P. Strauss
  • Patent number: 4745323
    Abstract: A compact fluorescent lamp of the twin tube or double twin type which is protected by an outer envelope mounted to the fluorescent lamp or the housing which contains the fluorescent lamp ballast. In a preferred embodiment the outer envelope is in the shape of an incandescent lamp envelope.
    Type: Grant
    Filed: February 26, 1986
    Date of Patent: May 17, 1988
    Assignee: Duro-Test Corporation
    Inventors: Donald P. Northrop, Arpad L. Pirovic
  • Patent number: 4734616
    Abstract: A dual cathode structure for a fluorescent lamp comprises a pair of electron emissive cathodes which are connected with a common junction and mounted to have an included angle therebetween. The first of the pair of cathodes has first and second leads coupled to an external source of electrical current and the second cathode structure has a first terminal coupled to the first cathode at a common junction and an anode flag connected to its second terminal to collect electrons when the filaments are operating in the anode half cycle. The collected electrons pass through the second cathode. The availability of the second cathode prolongs lamp life by permitting shifting of the hot spot.
    Type: Grant
    Filed: October 1, 1986
    Date of Patent: March 29, 1988
    Assignee: Duro-Test Corporation
    Inventor: Donald P. Northrop