Patents by Inventor David R. Olsen
David R. Olsen 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).
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Patent number: 9695714Abstract: A turbine module comprises a turbine shaft, a rotor assembly secured to the shaft, a bearing assembly rotatably supporting the turbine shaft, and a bearing housing containing the bearing assembly. The bearing housing includes a gutter at least partially circumscribing the bearing assembly, and a drain disposed proximate a base of the gutter. The gutter includes a first sloped floor portion circumferentially adjacent to the drain.Type: GrantFiled: April 21, 2014Date of Patent: July 4, 2017Assignee: United Technologies CorporationInventors: David R. Olsen, Frederic G. Miner, Paul H. Dolman
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Publication number: 20160090871Abstract: A turbine module comprises a turbine shaft, a rotor assembly secured to the shaft, a bearing assembly rotatably supporting the turbine shaft, and a bearing housing containing the bearing assembly. The bearing housing includes a gutter at least partially circumscribing the bearing assembly, and a drain disposed proximate a base of the gutter. The gutter includes a first sloped floor portion circumferentially adjacent to the drain.Type: ApplicationFiled: April 21, 2014Publication date: March 31, 2016Inventors: David R. Olsen, Frederic G. Miner, Paul H. Dolman
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Publication number: 20160069211Abstract: A turbine module comprises a turbine shaft, a rotor assembly secured to the shaft, a bearing assembly rotatably supporting the turbine shaft, a bearing housing containing the bearing assembly, and a bearing compartment containing the bearing housing. A bearing compartment wall has at least one integral fluid supply passage in fluid communication with the bearing housing. The at least one integral fluid passage extends generally longitudinally through the bearing compartment wall.Type: ApplicationFiled: April 21, 2014Publication date: March 10, 2016Inventors: David R. Olsen, Frederic G. Miner, Paul H. Dolman
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Publication number: 20110207671Abstract: The present invention relates to double-crosslinked collagen materials, methods for preparing double-crosslinked collagen materials, and methods of using double-crosslinkedType: ApplicationFiled: August 21, 2009Publication date: August 25, 2011Applicant: FibroGen, Inc.Inventors: Robert C. Chang, David R. Olsen, Jame W. Polarek, Kim E. Williams
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Publication number: 20090143568Abstract: The present invention relates to recombinant gelatins and compositions thereof, and methods of producing and using the same.Type: ApplicationFiled: May 15, 2008Publication date: June 4, 2009Applicant: FibroGen, Inc.Inventors: Robert C. Chang, Kari Kivirikko, Thomas B. Neff, David R. Olsen, James W. Polarek
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Patent number: 7393928Abstract: The present invention relates to recombinant gelatins and compositions thereof, and methods of producing and using the same.Type: GrantFiled: May 27, 2005Date of Patent: July 1, 2008Assignee: FibroGen, Inc.Inventors: Robert C. Chang, Kari I. Kivirikko, Thomas B. Neff, David R. Olsen, James W. Polarek
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Patent number: 6992172Abstract: The present invention relates to recombinant gelatins and compositions thereof, and methods of producing and using the same.Type: GrantFiled: November 10, 2000Date of Patent: January 31, 2006Assignee: FibroGen, Inc.Inventors: Robert C. Chang, Kari I. Kivirikko, Thomas B. Neff, David R. Olsen, James W. Polarek
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Publication number: 20030064074Abstract: The present invention relates to vaccines comprising recombinant gelatin, to methods of producing and using such vaccines, and to vaccination kits.Type: ApplicationFiled: August 30, 2002Publication date: April 3, 2003Inventors: Robert C. Chang, Kari I. Kivirikko, Thomas B. Neff, David R. Olsen, James W. Polarek
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Patent number: 6428978Abstract: Methods are disclosed for simplified recombinant production of fibrillar collagens. DNAs encoding fibrillar collagen monomers lacking the N propeptide, the C propeptide, or both propeptides are introduced into recombinant host cells and expressed. Trimeric collagen is recovered from the recombinant host cells.Type: GrantFiled: April 9, 1999Date of Patent: August 6, 2002Assignees: Cohesion Technologies, Inc., Genotypes, Inc.Inventors: David R. Olsen, Robert Chang, Hugh McMullin, Ronald A. Hitzeman, George Chisholm
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Patent number: 6413737Abstract: New forms of ecarin, a procoagulant protein from Echis carinatus venom, are described, as are polynucleotides encoding the new proteins, methods for production of the new proteins, and methods for activation of prothrombin using the new proteins. The new ecarins comprise a serine at position 396 of the protein. The new proteins may be used for activation of prothrombin, and are particularly useful for the production of recombinant thrombin.Type: GrantFiled: June 30, 2000Date of Patent: July 2, 2002Assignee: Cohesion Technologies, Inc.Inventors: David R. Olsen, Jeff Prior, Louis C. Sehl, Donald G. Wallace
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Patent number: 6413742Abstract: Methods are disclosed for simplified recombinant production of fibrillar collagens. DNAs encoding fibrillar collagen monomers lacking the N propeptide, the C propeptide, or both propeptides are introduced into recombinant host cells and expressed. Trimeric collagen is recovered from the recombinant host cells.Type: GrantFiled: May 31, 2000Date of Patent: July 2, 2002Assignees: Cohesion Technologies, Inc., Genotypes, Inc.Inventors: David R. Olsen, Robert Chang, Hugh McMullin, Ronald A. Hitzeman, George Chisholm
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Patent number: 6199371Abstract: The present invention relates to a thermally compliant liner for a gas turbine engine. The liner includes an outer wall, an inner wall spaced radially inwardly from the outer wall leaving a duct therebetween. A plurality of stiffeners are disposed in the duct. The stiffeners include a flexible medial portion which accommodates differential rates of thermal growth between the outer and inner walls. The stiffeners also include radially extending portions which in conjunction with the medial portion, minimize buckling of the liner due to pressure differentials.Type: GrantFiled: October 15, 1998Date of Patent: March 13, 2001Assignee: United Technologies CorporationInventors: Keith S. Brewer, Gary F. Chaplin, David R. Olsen
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Patent number: 5914254Abstract: The invention is directed to the use of a fusion partner that does not contain a leader sequence, as a means to increase the solubility and activity of recombinant polypeptides by facilitating the expression of fusion proteins, which are then transported out of the cytoplasm. The invention includes a nucleic acid encoding a fusion polypeptide comprising a mature interleukin-1-like polypeptide or a leader-deleted-translocating polypeptide, and a polypeptide of interest; as well as host cells comprising such nucleic acids, and fusion proteins so encoded. The invention also encompasses methods of using such nucleic acids to produce recombinant fusion polypeptides, mature polypeptides of interest, and purified compositions thereof.Type: GrantFiled: May 12, 1997Date of Patent: June 22, 1999Assignee: Celtrix Pharmaceuticals, Inc.Inventors: Desmond Mascarenhas, Yang Zhang, Pamela S. Olson, David R. Olsen, Pedro A. Cohen, Kimyen B. Nguyen
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Patent number: 5830706Abstract: The invention is directed to the use of IL-1-like fusion polypeptides to increase the solubility and activity of recombinant polypeptides. The invention includes a nucleic acid encoding a fusion polypeptide comprising an interleukin-1-like polypeptide and a polypeptide of interest and the method of using such a nucleic acid to produce recombinant fusion polypeptides.Type: GrantFiled: June 5, 1995Date of Patent: November 3, 1998Assignee: Celtrix Pharmaceuticals, Inc.Inventors: Desmond Mascarenhas, Yang Zhang, Pamela S. Olson, David R. Olsen, Pedro A. Carrillo
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Patent number: 5693607Abstract: A method of treating TGF-.beta. excess is disclosed. The treatment is parenteral, oral or topical administration of TGF-.beta. receptor fragment. Particularly effective is a soluble receptor fragment which resembles the extracellular portion of TGF-.beta. binding protein II.Type: GrantFiled: December 22, 1994Date of Patent: December 2, 1997Inventors: Patricia R. Segarini, James R. Dasch, David R. Olsen, Pedro A. Carrillo, Desmond Mascarenhas
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Patent number: 5629172Abstract: The invention is directed to the use of a fusion partner that does not contain a leader sequence, as a means to increase the solubility and activity of recombinant polypeptides by facilitating the expression of fusion proteins, which are then transported out of the cytoplasm. The invention includes a nucleic acid encoding a fusion polypeptide comprising a mature interleukin-1-like polypeptide or a leader-deleted-translocating polypeptide, and a polypeptide of interest; as well as host cells comprising such nucleic acids, and fusion proteins so encoded. The invention also encompasses methods of using such nucleic acids to produce recombinant fusion polypeptides, mature polypeptides of interest, and purified compositions thereof.Type: GrantFiled: August 2, 1994Date of Patent: May 13, 1997Assignee: Celtrix Pharmaceuticals, Inc.Inventors: Desmond Mascarenhas, Yang Zhang, Pamela S. Olson, David R. Olsen, Pedro A. Cohen
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Patent number: 5563046Abstract: The invention is directed to the use of IL-1-like fusion polypeptides to increase the solubility and activity of recombinant polypeptides. The invention includes a nucleic acid encoding a fusion polypeptide comprising an interleukin-1-like polypeptide and a polypeptide of interest and the method of using such a nucleic acid to produce recombinant fusion polypeptides.Type: GrantFiled: August 2, 1993Date of Patent: October 8, 1996Assignee: Celtrix Pharmaceuticals, Inc.Inventors: Desmond Mascarenhas, Yang Zhang, Pamela S. Olson, David R. Olsen, Pedro A. Carrillo