Patents by Inventor Tivadar Farkas

Tivadar Farkas 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: 10603604
    Abstract: A slurry chamber is fastened to and held in coaxial alignment with a chromatography column by a V-band. One end of the column has an end cap and frit. A slurry of fluid and chromatographic media is placed in the column and chamber. A piston is forced through the chamber and into the column by a hydraulic ram to expel the fluid and form a media bed in the column. The slurry chamber is removed, and a split end cap is fastened to the column. A threaded recess in the split end cap receives a split, threaded collet. The collet is tightened until it pushes against the piston with the same force as the ram, at which point the ram is released and the column removed for use.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: March 31, 2020
    Assignee: Phenomenex, Inc.
    Inventors: Peter C. Rahn, Romaine R. Maiefski, Tivadar Farkas, Emmet E. Welch
  • Publication number: 20180078877
    Abstract: A slurry chamber is fastened to and held in coaxial alignment with a chromatography column by a V-band. One end of the column has an end cap and frit. A slurry of fluid and chromatographic media is placed in the column and chamber. A piston is forced through the chamber and into the column by a hydraulic ram to expel the fluid and form a media bed in the column. The slurry chamber is removed, and a split end cap is fastened to the column. A threaded recess in the split end cap receives a split, threaded collet. The collet is tightened until it pushes against the piston with the same force as the ram, at which point the ram is released and the column removed for use.
    Type: Application
    Filed: July 19, 2017
    Publication date: March 22, 2018
    Inventors: Peter C. Rahn, Romaine R. Maiefski, Tivadar Farkas, Emmet E. Welch
  • Patent number: 8658038
    Abstract: An advanced silica gel sorbent for use in chromatographic separations that has been chemically modified by surface polycondensation of a trifunctional and/or difunctional organosilane. The chromatographic media exhibits a wider pH range and improved pH stability as compared to other silica gel based sorbents, while retaining all other positive aspects attributed to silica gel based sorbents. A method of forming the advanced silica gel sorbent by Templated Multilayer Inorganic/Organic Grafting.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: February 25, 2014
    Assignee: Phenomenex, Inc.
    Inventors: Ismail M. Rustamov, Michael C. Chitty, Tivadar Farkas, Lawrence Loo, Emmet Welch
  • Publication number: 20100181240
    Abstract: A slurry chamber is fastened to and held in coaxial alignment with a chromatography column by a V-band. One end of the column has an end cap and frit. A slurry of fluid and chromatographic media is placed in the column and chamber. A piston is forced through the chamber and into the column by a hydraulic ram to expel the fluid and form a media bed in the column. The slurry chamber is removed, and a split end cap is fastened to the column. A threaded recess in the split end cap receives a split, threaded collet. The collet is tightened until it pushes against the piston with the same force as the ram, at which point the ram is released and the column removed for use.
    Type: Application
    Filed: January 22, 2010
    Publication date: July 22, 2010
    Applicant: Phenomenex, Inc.
    Inventors: Peter C. Rahn, Romaine R. Maiefski, Tivadar Farkas, Emmet E. Welch
  • Publication number: 20100126921
    Abstract: A slurry chamber is fastened to and held in coaxial alignment with a chromatography column by a V-band. One end of the column has an end cap and fit. A slurry of fluid and chromatographic media is placed in the column and chamber. A piston is forced through the chamber and into the column by a hydraulic ram to expel the fluid and form a media bed in the column. The slurry chamber is removed, and a split end cap is fastened to the column. A threaded recess in the split end cap receives a split, threaded collet. The collet is tightened until it pushes against the piston with the same force as the ram, at which point the ram is released and the column removed for use.
    Type: Application
    Filed: February 3, 2010
    Publication date: May 27, 2010
    Applicant: Phenomenex, Inc.
    Inventors: Peter C. Rahn, Romaine R. Maiefski, Tivadar Farkas, Emmet E. Welch
  • Patent number: 7674383
    Abstract: A slurry chamber is fastened to and held in coaxial alignment with a chromatography column by a V-band. One end of the column has an end cap and frit. A slurry of fluid and chromatographic media is placed in the column and chamber. A piston is forced through the chamber and into the column by a hydraulic ram to expel the fluid and form a media bed in the column. The slurry chamber is removed, and a split end cap is fastened to the column. A threaded recess in the split end cap receives a split, threaded collet. The collet is tightened until it pushes against the piston with the same force as the ram, at which point the ram is released and the column removed for use.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: March 9, 2010
    Assignee: Phenomenex, Inc.
    Inventors: Peter C. Rahn, Romaine R. Maiefski, Tivadar Farkas, Emmet E. Welch
  • Publication number: 20090275469
    Abstract: An advanced silica gel sorbent for use in chromatographic separations that has been chemically modified by surface polycondensation of a trifunctional and/or difunctional organosilane. The chromatographic media exhibits a wider pH range and improved pH stability as compared to other silica gel based sorbents, while retaining all other positive aspects attributed to silica gel based sorbents. A method of forming the advanced silica gel sorbent by Templated Multilayer Inorganic/Organic Grafting.
    Type: Application
    Filed: June 30, 2009
    Publication date: November 5, 2009
    Inventors: ISMAIL M. RUSTAMOV, Michael C. Chitty, Tivadar Farkas, Lawrence Loo, Emmet Welch
  • Patent number: 7563367
    Abstract: An advanced silica gel sorbent for use in chromatographic separations that has been chemically modified by surface polycondensation of a trifunctional and/or difunctional organosilane. The chromatographic media exhibits a wider pH range and improved pH stability as compared to other silica gel based sorbents, while retaining all other positive aspects attributed to silica gel based sorbents. A method of forming the advanced silica gel sorbent by Templated Multilayer Inorganic/Organic Grafting.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: July 21, 2009
    Assignee: Phenomenex, Inc.
    Inventors: Ismail M. Rustamov, Michael C. Chitty, Tivadar Farkas, Lawrence Loo, Emmet Welch
  • Publication number: 20070090035
    Abstract: A slurry chamber is fastened to and held in coaxial alignment with a chromatography column by a V-band. One end of the column has an end cap and frit. A slurry of fluid and chromatographic media is placed in the column and chamber. A piston is forced through the chamber and into the column by a hydraulic ram to expel the fluid and form a media bed in the column. The slurry chamber is removed, and a split end cap is fastened to the column. A threaded recess in the split end cap receives a split, threaded collet. The collet is tightened until it pushes against the piston with the same force as the ram, at which point the ram is released and the column removed for use.
    Type: Application
    Filed: October 25, 2005
    Publication date: April 26, 2007
    Inventors: Peter Rahn, Romaine Maiefski, Tivadar Farkas, Emmet Welch
  • Publication number: 20060070937
    Abstract: An advanced silica gel sorbent for use in chromatographic separations that has been chemically modified by surface polycondensation of a trifunctional and/or difunctional organosilane. The chromatographic media exhibits a wider pH range and improved pH stability as compared to other silica gel based sorbents, while retaining all other positive aspects attributed to silica gel based sorbents. A method of forming the advanced silica gel sorbent by Templated Multilayer Inorganic/Organic Grafting.
    Type: Application
    Filed: September 30, 2005
    Publication date: April 6, 2006
    Inventors: Ismail Rustamov, Michael Chitty, Tivadar Farkas, Lawrence Loo, Emmet Welch