Patents by Inventor David Zuffi

David Zuffi 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: 10718744
    Abstract: Provided herein in some embodiments is a column including a housing assembly and a cartridge assembly. The housing assembly can include a housing top, a housing bottom, and a housing siding. The housing siding can be fixedly coupled to the housing top and the housing bottom forming hermetic seals therebetween. The cartridge assembly can include a cartridge top, an outer frit, and an inner frit disposed within the outer frit. A toroidal space can defined by the cartridge top, the outer frit, the inner frit, and the housing bottom. The toroidal space can be configured to hold a stationary phase for radial flow column chromatography. Also provided herein in some embodiments is a process including assembling the cartridge assembly, assembling the housing assembly about the cartridge assembly, and pressure testing the column. In some embodiments, the process can further include charging the toroidal space with a stationary phase.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: July 21, 2020
    Assignee: Sepragen Corporation
    Inventors: Renu Saxena, David Zuffi, Vinit Saxena
  • Publication number: 20180120270
    Abstract: Provided herein in some embodiments is a column including a housing assembly and a cartridge assembly. The housing assembly can include a housing top, a housing bottom, and a housing siding. The housing siding can be fixedly coupled to the housing top and the housing bottom forming hermetic seals therebetween. The cartridge assembly can include a cartridge top, an outer frit, and an inner frit disposed within the outer frit. A toroidal space can defined by the cartridge top, the outer frit, the inner frit, and the housing bottom. The toroidal space can be configured to hold a stationary phase for radial flow column chromatography. Also provided herein in some embodiments is a process including assembling the cartridge assembly, assembling the housing assembly about the cartridge assembly, and pressure testing the column. In some embodiments, the process can further include charging the toroidal space with a stationary phase.
    Type: Application
    Filed: October 27, 2016
    Publication date: May 3, 2018
    Inventors: Renu Saxena, David Zuffi, Vinit Saxena
  • Patent number: 8685241
    Abstract: A method, apparatus, and system are described to pack and unpack resin in a chromatography-column. One or more inflatable seals are deflated to pack a resin slurry from a bottom outlet valve into a resin bed chamber located between an outer shell of the column and an inner frit of the chromatography-column. The resin slurry is pumped into and through an outlet packing-and-running port and passed one or more deflated inflatable seals to pack the resin bed to a designated pressure with resin slurry. The inflatable seals are inflated to seal the resin bed in place.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: April 1, 2014
    Assignee: Sepragen Corporation
    Inventors: Vinit Saxena, Renu Saxena, David Zuffi