Patents by Inventor RAJEN NIRWAL KUMAR

RAJEN NIRWAL KUMAR 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).

  • Fluid filtering device and method
    Patent number: 9254352
    Abstract: An apparatus including a hollow body, an inlet fluidly coupled to the hollow body, a piston slidably engaged within the hollow body, and a filter arranged within the hollow body between the inlet and piston. The piston and hollow body cooperatively generate a negative pressure, relative to ambient, within the hollow body during piston translation from a first position, proximal the inlet, to a second position, distal the inlet, to draw a fluid, such as blood, through the filter into the hollow body. The piston and hollow body cooperatively generate a positive pressure, relative to ambient, within the hollow body during piston translation from the second position to the first position to egress the filtered fluid from the hollow body.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: February 9, 2016
    Inventors: Rajen Nirwal Kumar, Caitlin O'Brien Winget, Theresa Kate Fisher, Alexander Hobbes Harrington, Aliaksandra Kapshai, Gillian Elizabeth Henker
  • FLUID FILTERING DEVICE AND METHOD
    Publication number: 20130270161
    Abstract: An apparatus including a hollow body, an inlet fluidly coupled to the hollow body, a piston slidably engaged within the hollow body, and a filter arranged within the hollow body between the inlet and piston. The piston and hollow body cooperatively generate a negative pressure, relative to ambient, within the hollow body during piston translation from a first position, proximal the inlet, to a second position, distal the inlet, to draw a fluid, such as blood, through the filter into the hollow body. The piston and hollow body cooperatively generate a positive pressure, relative to ambient, within the hollow body during piston translation from the second position to the first position to egress the filtered fluid from the hollow body.
    Type: Application
    Filed: April 12, 2012
    Publication date: October 17, 2013
    Inventors: RAJEN NIRWAL KUMAR, CAITLIN O'BRIEN WINGET, THERESA KATE FISHER, ALEXANDER HOBBES HARRINGTON, ALIAKSANDRA KAPSHAI, GILLIAN ELIZABETH HENKER