Patents by Inventor Khanh Q. Nguyen
Khanh Q. Nguyen 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: 9353357Abstract: The invention relates to a recombinant DNA molecule encoding a polypeptide having phytase activity and increased temperature stability and increased proteolytic stability of the enzyme activity. The DNA sequence has been obtained by variation of the mature wild-type E. coli phytase sequence with defined amino acid positions being modified in comparison to the wild-type sequence or with the sequences having N- and/or C-terminal extensions, respectively. The invention further relates to a method for expressing the recombinant phytase as well as its use in the food and animal feed technologies.Type: GrantFiled: March 18, 2013Date of Patent: May 31, 2016Assignee: AB Enzymes GmbHInventors: Khanh Q. Nguyen, Bruno Winter
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Patent number: 9320151Abstract: A sleeve structure includes an electrically insulating protective sleeve having clips that retain and capture component pins and regulate a mounting distance of the electrical component from a wiring structure. A method of component wiring assembly is also included.Type: GrantFiled: October 17, 2012Date of Patent: April 19, 2016Assignee: General Electric CompanyInventor: Khanh Q. Nguyen
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Publication number: 20140242249Abstract: The invention relates to a recombinant DNA molecule encoding a polypeptide having phytase activity and increased temperature stability and increased proteolytic stability of the enzyme activity. The DNA sequence has been obtained by variation of the mature wild-type E. coli phytase sequence with defined amino acid positions being modified in comparison to the wild-type sequence or with the sequences having N- and/or C-terminal extensions, respectively. The invention further relates to a method for expressing the recombinant phytase as well as its use in the food and animal feed technologies.Type: ApplicationFiled: March 18, 2013Publication date: August 28, 2014Applicant: AB ENZYMES GMBHInventors: Khanh Q. Nguyen, Bruno Winter
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Patent number: 8653241Abstract: The invention relates to a DNA sequence that encodes a polypeptide with phospholipase activity and was isolated from Aspergillus and sequences derived therefrom, polypeptides with phospholipase activity encoded by these sequences as well as the use of these polypeptides for degumming of vegetable oil, for the preparation of dough and/or bakery products, for the preparation of dairy products, for processing steps in the textile industry and for related applications.Type: GrantFiled: June 28, 2011Date of Patent: February 18, 2014Assignee: AB Enzymes GmbHInventors: Khanh Q. Nguyen, Volker Marschner, Kornelia Titze, Bruno Winter
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Patent number: 8507241Abstract: The invention relates to a DNA sequence that encodes a polypeptide with lysophospholipase activity and was isolated from Aspergillus and sequences derived therefrom, polypeptides with lysophospholipase activity encoded by these sequences as well as the use of these polypeptides for improving the filterability of syrups consisting of wheat starch and for related applications.Type: GrantFiled: May 10, 2012Date of Patent: August 13, 2013Assignee: AB Enzymes GmbHInventors: Khanh Q. Nguyen, Volker Marschner, Kornelia Titze, Bruno Winter
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Patent number: 8420369Abstract: The invention relates to a recombinant DNA molecule encoding a polypeptide having phytase activity and increased temperature stability and increased proteolytic stability of the enzyme activity. The DNA sequence has been obtained by variation of the mature wild-type E. coli phytase sequence with defined amino acid positions being modified in comparison to the wild-type sequence or with the sequences having N- and/or C-terminal extensions, respectively. The invention further relates to a method for expressing the recombinant phytase as well as its use in the food and animal feed technologies.Type: GrantFiled: November 2, 2007Date of Patent: April 16, 2013Assignee: AB Enzymes GmbHInventors: Khanh Q. Nguyen, Bruno Winter
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Patent number: 8313937Abstract: The present invention features a recombinant DNA molecule which, upon expression in a prokaryotic or eukaryotic host cell, encodes a polypeptide having phytase activity. In preferred embodiments, the recombinant DNA molecule comprises a DNA sequence selected from DNA sequences which have been obtained by variations of the mature wild-type E. coli phytase sequence, wherein at least one amino acid at position 200 or position 207 is mutated as compared to the wild-type sequence, where the recombinant DNA molecule is, upon expression in a suitable host cell, associated with an increased activity of the thus encoded protein in the culture supernatant.Type: GrantFiled: October 14, 2005Date of Patent: November 20, 2012Assignee: AB Enzymes GmbHInventors: Khanh Q. Nguyen, Bruno Winter
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Publication number: 20120219666Abstract: The invention relates to a DNA sequence that encodes a polypeptide with lysophospholipase activity and was isolated from Aspergillus and sequences derived therefrom, polypeptides with lysophospholipase activity encoded by these sequences as well as the use of these polypeptides for improving the filterability of syrups consisting of wheat starch and for related applications.Type: ApplicationFiled: May 10, 2012Publication date: August 30, 2012Applicant: AB ENZYMES GMBHInventors: Khanh Q. Nguyen, Volker Marschner, Kornelia Titze, Bruno Winter
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Patent number: 8202715Abstract: The invention relates to a DNA sequence that encodes a polypeptide with lysophospholipase activity and was isolated from Aspergillus and sequences derived therefrom, polypeptides with lysophospholipase activity encoded by these sequences as well as the use of these polypeptides for improving the filterability of syrups consisting of wheat starch and for related applications.Type: GrantFiled: September 21, 2007Date of Patent: June 19, 2012Assignee: AB Enzymes GmbHInventors: Khanh Q. Nguyen, Volker Marschner, Kornelia Titze, Bruno Winter
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Patent number: 8153285Abstract: A fuel cell, fuel cell array and methods of forming the same are disclosed. The fuel cell can be made by forming a first aperture defined by a first aperture surface through a first electrode layer and forming a second aperture defined by a second aperture surface through a second electrode layer. A proton exchange membrane is laminated between the first electrode layer and the second electrode layer. At least a portion of the first aperture is at least partially aligned with the second aperture.Type: GrantFiled: December 29, 2003Date of Patent: April 10, 2012Assignee: Honeywell International Inc.Inventors: Robert E. Higashi, Khanh Q. Nguyen, Karen M. Newstrom-Peitso, Tom M. Rezachek, Roland A. Wood
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Publication number: 20110287141Abstract: The invention relates to a DNA sequence that encodes a polypeptide with phospholipase activity and was isolated from Aspergillus and sequences derived therefrom, polypeptides with phospholipase activity encoded by these sequences as well as the use of these polypeptides for degumming of vegetable oil, for the preparation of dough and/or bakery products, for the preparation of dairy products, for processing steps in the textile industry and for related applications.Type: ApplicationFiled: June 28, 2011Publication date: November 24, 2011Applicant: AB ENZYMES GMBHInventors: Khanh Q. Nguyen, Volker Marschner, Kornelia Titze, Bruno Winter
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Publication number: 20110262619Abstract: The invention relates to a recombinant DNA molecule coding a polypeptide having phytase stability after being expressed in a prokaryotic or eukaryotic host cell. Said recombinant DNA molecule comprises a DNA sequence selected from among a) DNA sequences coding a polypeptide that has phytase activity and is obtained by varying the mature wild-type E. coli phytase sequence, the variation being selected from among i) the mutation lysine?aspartic acid in position 74 (K74D), and/or ii) a combination of the mutations asparagine?arginine in position 139 (N139R) and aspartic acid?glutamic acid in position 142 (D142E), and/or iii) a combination of the mutations leucine?isoleucine in position 145 (L145I) and leucine?isoleucine in position 198 (L198I), and/or iv) a mutation valine?proline in position 200 (V200P), and/or v) an N-terminal or C-terminal or an N-terminal and C-terminal addition of a sequence section of the acidic phosphatase of Aspergillus niger var.Type: ApplicationFiled: November 2, 2007Publication date: October 27, 2011Applicant: AB Enzymes GmbHInventors: Khanh Q Nguyen, Bruno Winter
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Patent number: 7993876Abstract: The invention relates to a DNA sequence that encodes a polypeptide with phospholipase activity and was isolated from Aspergillus and sequences derived therefrom, polypeptides with phospholipase activity encoded by these sequences as well as the use of these polypeptides for degumming of vegetable oil, for the preparation of dough and/or bakery products, for the preparation of dairy products, for processing steps in the textile industry and for related applications.Type: GrantFiled: September 21, 2007Date of Patent: August 9, 2011Assignee: AB Enzymes GmbHInventors: Khanh Q. Nguyen, Volker Marschner, Kornelia Titze, Bruno Winter
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Publication number: 20100178671Abstract: The invention relates to a vector construct for expressing and secreting polypeptides in filamentous fungi, comprising, in 5?3? direction, in functional linkage, optionally a promoter which may have an enhancer placed upstream, at least one DNA sequence which codes for a first polypeptide and which may comprise a signal sequence or not, optionally a DNA sequence which codes for a 2A cleavage site or for a sequence derived therefrom, optionally together with an upstream DNA sequence which codes for a proteolytic cleavage site, or optionally a DNA sequence which codes for a proteolytic cleavage site, a DNA sequence which codes for a second polypeptide with signal sequence, optionally a further DNA sequence which codes for a 2A cleavage site or for a sequence derived therefrom, optionally together with an upstream DNA sequence which codes for a proteolytic cleavage site, or optionally a DNA sequence which codes for a proteolytic cleavage site, optionally a DNA sequence which codes for a third polypeptide withType: ApplicationFiled: July 19, 2007Publication date: July 15, 2010Applicant: AB ENZYMES GMBHInventors: Khanh Q. Nguyen, Bruno Winter
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Publication number: 20100119656Abstract: The invention relates to a DNA sequence that encodes a polypeptide with lysophospholipase activity and was isolated from Aspergillus and sequences derived therefrom, polypeptides with lysophospholipase activity encoded by these sequences as well as the use of these polypeptides for improving the filterability of syrups consisting of wheat starch and for related applications.Type: ApplicationFiled: September 21, 2007Publication date: May 13, 2010Applicant: AB Enzymes GmbHInventors: Khanh Q. Nguyen, Volker Marschner, Kornelia Titze, Bruno Winter
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Publication number: 20100019672Abstract: A mesotube apparatus is disclosed which includes a header insulator in order to avoid premature breakdown at lower voltage that occurs between a cathode and an anode in a discharge assembly. A chamber can be mounted on a header base and can be located away from plasma surrounded with dielectric so that breakdown occurs outside the normal voltage operating range. A number of feed-through pins associated with the header base can be electrically isolated from the header base by a dielectric insulator. The dielectric insulator can also be placed over the header base and topside of the chamber in order to passivate from stray electrons and plasma. The header base can be thin which allows welding of the anode and the cathode to the feed-through pins with a weld tool attached to the side of the feed-through pins. The chamber can be located on the header base by tightly fitting to the feed-through pins.Type: ApplicationFiled: July 25, 2008Publication date: January 28, 2010Inventors: Barrett E. Cole, Khanh Q. Nguyen
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Publication number: 20100003365Abstract: The invention relates to a DNA sequence that encodes a polypeptide with phospholipase activity and was isolated from Aspergillus and sequences derived therefrom, polypeptides with phospholipase activity encoded by these sequences as well as the use of these polypeptides for degumming of vegetable oil, for the preparation of dough and/or bakery products, for the preparation of dairy products, for processing steps in the textile industry and for related applications.Type: ApplicationFiled: September 21, 2007Publication date: January 7, 2010Applicant: AB Enzymes GmbHInventors: Khanh Q. Nguyen, Volker Marschner, Kornelia Titze, Bruno Winter
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Publication number: 20090169536Abstract: The invention relates to a recombinant DNA molecule, which, upon expression in a prokaryotic or eukaryotic host cell, encodes a polypeptide having phytase activity, wherein the recombinant DNA molecule comprises a DNA sequence selected from a) DNA sequences that have been obtained by variations of the mature wild-type E. coli phytase sequence, wherein at least one amino acid in the region of position 189 to 211 and/or an amino acid in the region of position 137 to 152 is mutated as compared to the wild-type sequence, b) DNA sequences having a homology of 70% to 100% to the sequences according to a), c) DNA sequences that are related to the sequences according to a) and b) due to the degeneracy of the genetic code, wherein the recombinant DNA molecule is, upon expression in a suitable host cell, associated with an increased activity of the thus encoded protein in the culture supernatant, as well as the proteins encoded by the same.Type: ApplicationFiled: October 14, 2005Publication date: July 2, 2009Applicant: AB ENZYMES GMBHInventors: Khanh Q. Nguyen, Bruno Winter
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Patent number: 7456412Abstract: One embodiment includes an electromagnetic sensor which includes a header, an anode connected to a first terminal extending through the header, the anode in electrical isolation from the header, a cathode connected to a second terminal extending through the header, the cathode in electrical isolation from the header, a conductive case including a window transparent to electromagnetic energy, the conductive case enclosing the anode and the cathode and hermetically sealed to the header and an insulative sleeve disposed between the anode and the case and between the cathode and the conductive case.Type: GrantFiled: April 11, 2007Date of Patent: November 25, 2008Assignee: Honeywell International Inc.Inventors: Barrett E. Cole, Khanh Q. Nguyen
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Publication number: 20080252467Abstract: One embodiment includes an electromagnetic sensor which includes a header, an anode connected to a first terminal extending through the header, the anode in electrical isolation from the header, a cathode connected to a second terminal extending through the header, the cathode in electrical isolation from the header, a conductive case including a window transparent to electromagnetic energy, the conductive case enclosing the anode and the cathode and hermetically sealed to the header and an insulative sleeve disposed between the anode and the case and between the cathode and the conductive case.Type: ApplicationFiled: April 11, 2007Publication date: October 16, 2008Inventors: Barrett E. Cole, Khanh Q. Nguyen