Patents by Inventor Sergei A. Tsarev
Sergei A. Tsarev 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: 9626422Abstract: Systems and methods for reslicing data in a representation of a relational database are disclosed. In one embodiment, the database includes a representation including a first slice. The database system creates a plurality of new slice and to create a plurality of write queues. The database system copies units of data in the first slice to the new slices according to a distribution function. The distribution function determines, for each unit of data in the first slice, one of the new slices into which to copy the unit of data. The database system asynchronously writes one or more actions of a set of one or more asynchronous database transactions to the first slice when copying the data in the first slice to the new slices. The database asynchronously enqueues the one or more actions of the set of asynchronous database transactions in the write queues according to the distribution function.Type: GrantFiled: October 7, 2013Date of Patent: April 18, 2017Assignee: Clustrix, Inc.Inventors: Jason Frantz, Sergei Tsarev, Jim Gale, Scott Smith, Dan Adkins
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Patent number: 9477741Abstract: Systems and methods for redistributing data in a relational database are disclosed. In one embodiment, the database includes a plurality of rows of data distributed across a plurality of slices of a table in the database. The database system is configured to distribute the rows of data across the slices according to a first function based on one or more columns of the table. The database system monitors at least one database statistic indicative of variation in a distribution of the rows of data across the slices and detects a redistribution condition based on the at least one monitored database statistic. The database system is further configured to respond to the detected redistribution condition by redistributing the rows of data across the slices according to a second function based on a different number of columns than the first function.Type: GrantFiled: September 23, 2013Date of Patent: October 25, 2016Assignee: Clustrix, Inc.Inventors: Jason Frantz, Sergei Tsarev, Jim Gale, Scott Smith
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Publication number: 20140095429Abstract: Systems and methods for redistributing data in a relational database are disclosed. In one embodiment, the database includes a plurality of rows of data distributed across a plurality of slices of a table in the database. The database system is configured to distribute the rows of data across the slices according to a first function based on one or more columns of the table. The database system monitors at least one database statistic indicative of variation in a distribution of the rows of data across the slices and detects a redistribution condition based on the at least one monitored database statistic. The database system is further configured to respond to the detected redistribution condition by redistributing the rows of data across the slices according to a second function based on a different number of columns than the first function.Type: ApplicationFiled: September 23, 2013Publication date: April 3, 2014Applicant: Clustrix, Inc.Inventors: Jason Frantz, Sergei Tsarev, Jim Gale, Scott Smith
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Publication number: 20140040318Abstract: Systems and methods for reslicing data in a representation of a relational database are disclosed. In one embodiment, the database includes a representation including a first slice. The database system creates a plurality of new slice and to create a plurality of write queues. The database system copies units of data in the first slice to the new slices according to a distribution function. The distribution function determines, for each unit of data in the first slice, one of the new slices into which to copy the unit of data. The database system asynchronously writes one or more actions of a set of one or more asynchronous database transactions to the first slice when copying the data in the first slice to the new slices. The database asynchronously enqueues the one or more actions of the set of asynchronous database transactions in the write queues according to the distribution function.Type: ApplicationFiled: October 7, 2013Publication date: February 6, 2014Applicant: Clustrix, Inc.Inventors: Jason Frantz, Sergei Tsarev, Jim Gale, Scott Smith, Dan Adkins
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Patent number: 8554726Abstract: Systems and methods for reslicing data in a representation of a relational database are disclosed. In one embodiment, the database includes a representation including a first slice. The database system creates a plurality of new slice and to create a plurality of write queues. The database system copies units of data in the first slice to the new slices according to a distribution function. The distribution function determines, for each unit of data in the first slice, one of the new slices into which to copy the unit of data. The database system asynchronously writes one or more actions of a set of one or more asynchronous database transactions to the first slice when copying the data in the first slice to the new slices. The database asynchronously enqueues the one or more actions of the set of asynchronous database transactions in the write queues according to the distribution function.Type: GrantFiled: June 1, 2011Date of Patent: October 8, 2013Assignee: Clustrix, Inc.Inventors: Jason Frantz, Sergei Tsarev, Jim Gale, Scott Smith, Dan Adkins
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Patent number: 8543538Abstract: Systems and methods for redistributing data in a relational database are disclosed. In one embodiment, the database includes a plurality of rows of data distributed across a plurality of slices of a table in the database. The database system is configured to distribute the rows of data across the slices according to a first function based on one or more columns of the database. The database system monitors at least one database statistic indicative of variation in a distribution of the rows of data across the slices and detects a redistribution condition based on the at least one monitored database statistic. The database system is further configured to respond to the detected redistribution condition by redistributing the rows of data across the slices according to a second function based on a different number of columns than the first function.Type: GrantFiled: June 1, 2011Date of Patent: September 24, 2013Assignee: Clustrix, Inc.Inventors: Jason Frantz, Sergei Tsarev, Jim Gale, Scott Smith
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Publication number: 20120310991Abstract: Systems and methods for reslicing data in a representation of a relational database are disclosed. In one embodiment, the database includes a representation including a first slice. The database system creates a plurality of new slice and to create a plurality of write queues. The database system copies units of data in the first slice to the new slices according to a distribution function. The distribution function determines, for each unit of data in the first slice, one of the new slices into which to copy the unit of data. The database system asynchronously writes one or more actions of a set of one or more asynchronous database transactions to the first slice when copying the data in the first slice to the new slices. The database asynchronously enqueues the one or more actions of the set of asynchronous database transactions in the write queues according to the distribution function.Type: ApplicationFiled: June 1, 2011Publication date: December 6, 2012Inventors: Jason Frantz, Sergei Tsarev, Jim Gale, Scott Smith, Dan Adkins
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Publication number: 20120310986Abstract: Systems and methods for redistributing data in a relational database are disclosed. In one embodiment, the database includes a plurality of rows of data distributed across a plurality of slices of a table in the database. The database system is configured to distribute the rows of data across the slices according to a first function based on one or more columns of the database. The database system monitors at least one database statistic indicative of variation in a distribution of the rows of data across the slices and detects a redistribution condition based on the at least one monitored database statistic. The database system is further configured to respond to the detected redistribution condition by redistributing the rows of data across the slices according to a second function based on a different number of columns than the first function.Type: ApplicationFiled: June 1, 2011Publication date: December 6, 2012Inventors: Jason Frantz, Sergei Tsarev, Jim Gale, Scott Smith
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Patent number: 6787145Abstract: A strain of hepatitis E virus from Pakistan (SAR-55) implicated in an epidemic of enterically transmitted non-A, non-B hepatitis, now called hepatitis E, is disclosed. The invention relates to the expression of the whole structural region of SAR-55, designated open reading frame 2 (ORF-2), in a eukaryotic expression system. The expressed protein is capable of forming HEV virus-like particles which can serve as an antigen in diagnostic immunoassays and as an immunogen or vaccine to protect against infection by hepatitis E.Type: GrantFiled: November 28, 2000Date of Patent: September 7, 2004Assignee: The United States of America as represented by the Secretary of the Department of Health and Human ServicesInventors: Sergei A. Tsarev, Suzanne U. Emerson, Robert H. Purcell
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Patent number: 6706873Abstract: A strain of hepatitis E virus from Pakistan (SAR-55) implicated in an epidemic of enterically transmitted non-A, non-B hepatitis, now called hepatitis E, is disclosed. The invention relates to the expression of the whole structural region of SAR-55, designated open reading frame 2 (ORF-2), in a eukaryotic expression system. The expressed protein is capable of forming HEV virus-like particles which can serve as an antigen in diagnostic immunoassays and as an immunogen or vaccine to protect against infection by hepatitis E.Type: GrantFiled: October 3, 1994Date of Patent: March 16, 2004Assignee: The United States of America as represented by the Department of Health and Human ServicesInventors: Sergei A. Tsarev, Suzanne U. Emerson, Robert H. Purcell
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Patent number: 6696242Abstract: A strain of hepatitis E virus from Pakistan (SAR-55) implicated in an epidemic of enterically transmitted non-A, non-B hepatitis, now called hepatitis E, is disclosed. The invention relates to the expression of the whole structural region of SAR-55, designated open reading frame 2 (ORF-2), in a eukaryotic expression system. The expressed protein is capable of forming HEV virus-like particles which can serve as an antigen in diagnostic immunoassays and as an immunogen or vaccine to protect against infection by hepatitis E.Type: GrantFiled: June 6, 1995Date of Patent: February 24, 2004Assignee: The United States of America as represented by the Department of Health and Human ServicesInventors: Sergei A. Tsarev, Suzanne U. Emerson, Robert H. Purcell
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Patent number: 6458562Abstract: The invention relates to the expression of open reading frame 2 (ORF-2) proteins of a strain of hepatitis E virus from Pakistan (SAR-55) in a eukaryotic expression system. The expressed proteins can serve as an antigen in diagnostic immunoassays and/or as an immunogen or vaccine to protect against infection by hepatitis E.Type: GrantFiled: February 22, 2000Date of Patent: October 1, 2002Assignees: The United States of America as represented by the Secretary of Health and Human Services, Novavax, Inc.Inventors: Suzanne U. Emerson, Robert H. Purcell, Sergei A. Tsarev, Robin A. Robinson
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Patent number: 6287759Abstract: A strain of hepatitis E virus from Pakistan (SAR-55) implicated in an epidemic of enterically transmitted non-A, non-B hepatitis, now called hepatitis E, is disclosed. The invention relates to the expression of the whole structural region of SAR-55, designated open reading frame 2 (ORF-2), in a eukaryotic expression system. The expressed protein is capable of forming HEV virus-like particles which can serve as an antigen in diagnostic immunoassays and as an immunogen or vaccine to protect against infection by hepatitis E.Type: GrantFiled: June 6, 1995Date of Patent: September 11, 2001Assignee: The United States of America as represented by the Department of Health and Human ServicesInventors: Sergei A. Tsarev, Suzanne U. Emerson, Robert H. Purcell
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Patent number: 6207416Abstract: A strain of hepatitis E virus from Pakistan (SAR-55) implicated in an epidemic of enterically transmitted non-A, non-B hepatitis, now called hepatitis E, is disclosed. The invention relates to the expression of the whole structural region of SAR-55, designated open reading frame 2 (ORF-2), in a eukaryotic expression system. The expressed protein is capable of forming HEV virus-like particles which can serve as an antigen in diagnostic immunoassays and as an immunogen or vaccine to protect against infection by hepatitis E.Type: GrantFiled: May 28, 1997Date of Patent: March 27, 2001Assignee: The United States of America as represented by the Department of Health and Human ServicesInventors: Sergei A. Tsarev, Suzanne U. Emerson, Robert H. Purcell
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Patent number: 6146643Abstract: The present invention relates, in general, to a substantially pure preparation of the simian hepatitis A viral isolate AGM-27; a substantially pure preparation of the genomic DNA of simian hepatitis A viral isolate AGM-27; a pharmaceutical composition comprising the simian hepatitis A viral isolate AGM-27; a method of preventing hepatitis A in an animal; and a vaccine comprising the simian hepatitis A viral isolate AGM-27.Type: GrantFiled: June 7, 1995Date of Patent: November 14, 2000Assignee: The United States of America as represented by the Secretary of the Department of Health and Human ServicesInventors: Sergei A. Tsarev, Suzanne U. Emerson, Robert H. Purcell
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Patent number: 6054567Abstract: The invention relates to the expression of open reading frame 2 (ORF-2) proteins of a strain of hepatitis E virus from Pakistan (SAR-55) in a eukaryotic expression system. The expressed proteins can serve as an antigen in diagnostic immunoassays and/or as an immunogen or vaccine to protect against infection by hepatitis E.Type: GrantFiled: April 11, 1997Date of Patent: April 25, 2000Assignees: The United States of America as represented by the Department of Health and Human Services, Novavax, Inc.Inventors: Suzanne U. Emerson, Robert H. Purcell, Sergei A. Tsarev, Robin A. Robinson
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Patent number: 4988622Abstract: A recombinant plasmid DVA pVN22 coding the biosynthesis of a human leukocyte interferon .alpha.-I1 having size of 10.85 t.p.b. and consisting of the following units:EcoRI--HindIII--a fragment of the plasmid pAYC37 with the size of 9.45 t.p.b.,HindIII--EcoRI--a fragment with the size of 1.4 t.p.b. consisting of the following members:a fragment of DNA with the size of 0.25 t.p.b. with the regulatory range of gene D of the phague .phi..times.174 and the first codons of the gene of interferongene of interferon .alpha.-I1 with the size of 0.5 t.p.b.,a region of the human genome DNA with the size of 0.65 t.p.b.;it has the following genetic markers: genome Ap.sup.R ensuring resistance against ampicillin, genome Sm.sup.R ensuring resistance to streptomycin; contains unique regions of recognition of restrictases: Hind III--O; EcoRI--1.4 t.p.b., BamHI--10.82 t.p.b., it is deposited at the collection of culture of microogranisms of the A11-Union Research Institute of Antibiotics and registered under the entry No. 1788.Type: GrantFiled: December 15, 1987Date of Patent: January 29, 1991Inventors: Jury I. Kozlov, Vera A. Nardoditskaya, Marina R. Eremashvili, Alexander Y. Strongin, Viktor E. Sterkin, Marina A. Skvortsova, Andrei J. Chistoserdov, Jury D. Tsygankov, Ljudmila V. Evdonina, Vitaly L. Jurin, Galina S. Monastyrskaya, Evgeny D. Sverdlov, Grigory M. Dolganov, Sergei A. Tsarev
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Patent number: 4751287Abstract: The human leukocyte interferon is essentially a protein featuring the foling sequence of aminoacids:CDLPQTHSLGNRRALILLAQMGRISHFSCLKDRYDFGFPQEVFDGNQFQKAQAISAF HEMIQQTFNLFSTKDSSAAWDETLLDKFYIELFQQLNDLEACVTQEVGVEEIALMNE DSILAVRKYFQRITLYLMGKKYSPCAWEVVRAEIMRSFSFSTNLQKGLRRKD.A method for producing said interferon N is bacterial cells incorporates isolation of matrix poly (A)-mRNA from induced human leukocytes, synthesis of the gene of said interferon, insertion in the vector plasmid pBR 322 under the control of a tryptophane promotor, and transformation of the resultant recombinant DNA of the E. coli bacterial cells.According to the invention, used as the interferon gene is the gene of interferon N featuring the following primary structure of DNA: ##STR1## The human leukocyte interferon features an antiviral potency and can find application in medical practice.Type: GrantFiled: September 28, 1984Date of Patent: June 14, 1988Assignees: Institut Organicheskogo Sinteza Akademii Nauk Latviiskoi SSR, Institut Bioorganicheskoi Khimii Imeni M.M. Shemyakina akademii Nauk SSRInventors: Valdis M. Berzin, Alexandr J. Tsimanis, Jury I. Vishnevsky, Uldis R. Apsalon, Andris V. Dishler, Elmar Y. Gren, Evgeny D. Sverdlov, Galina S. Monastyrskaya, Sergei A. Tsarev, Alexandr A. Smorodintsev, Vladimir I. Iovlev, Guna Y. Feldmane, Arnis E. Duk
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Patent number: 4680260Abstract: A method for producing human leukocyte interferon alpha-2 resides in that there is carried out submerged cultivation of a producer strain Pseudomonas species VG-84 carrying a plasmid pVG3 with an inserted gene of human leukocyte interferon alpha-2, said strain being deposited in the collection of microorganism cultures at the USSR Antibiotics Research Institute under Reg. No. 1742; said strain being cultivated in a nutrient medium, containing the sources of carbon and nitrogen, mineral salts and growth stimulants, under aeration in the presence of antibiotics, i.e., streptomycin or tetracycline, or a mixture of both, followed by isolation and purification of the end product.Type: GrantFiled: July 3, 1985Date of Patent: July 14, 1987Assignee: Vsesojuzny Nauchno-Issledovatelsky Institut GenetikiInventors: Vladimir G. Debabov, Jury D. Tsygankov, Andrei J. Chistoserdov, Evgeny D. Sverdlov, Lara S. Izotova, Sergei V. Kostrov, Viktor E. Sterkin, Vladimir P. Kuznetsov, Sergei V. Belyaev, Galina S. Monastyrskaya, Irina S. Salomatina, Grigory M. Dolganov, Sergei G. Arsenian, Sergei A. Tsarev, Jury I. Kozlov, Alexandr Y. Strongin, Vsevolod I. Ogarkov, Jury A. Ovchinnikov