Patents by Inventor Phil Ligrani

Phil Ligrani 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).

  • Osmotically driven dispense pump and related components for use in high pressure applications
    Patent number: 9447781
    Abstract: A high pressure osmotic dispense pump (10) having a substantially continuous delivery rate and extended delivery times is described and disclosed. The dispense pump (10) includes a semi-permeable membrane (12) which is substantially free of distortions and lateral stretching stresses. The membrane housing (14) and configuration of the present invention allows for consistent and accurate flow rates at the micro-liter level and improved control of the surface area of the semi-permeable membrane (12). This osmotic pump (10) also includes optional methods for activating and deactivating the osmotic process and/or controlling flow rates. Along with these features, the pump can be amplified or modulated to increase the dispense rate and/or adjust the flow rate during operation.
    Type: Grant
    Filed: July 21, 2006
    Date of Patent: September 20, 2016
    Assignee: University of Utah Research Foundation
    Inventors: Trent Deem, Phil Ligrani, Bradley C. Hansen
  • Osmotically Driven Dispense Pump and Related Components for Use in High Pressure Applications
    Publication number: 20080269725
    Abstract: A high pressure osmotic dispense pump (10) having a substantially continuous delivery rate and extended delivery times is described and disclosed. The dispense pump (10) includes a semi-permeable membrane (12) which is substantially free of distortions and lateral stretching stresses. The membrane housing (14) and configuration of the present invention allows for consistent and accurate flow rates at the micro-liter level and improved control of the surface area of the semi-permeable membrane (12). This osmotic pump (10) also includes optional methods for activating and deactivating the osmotic process and/or controlling flow rates. Along with these features, the pump can be amplified or modulated to increase the dispense rate and/or adjust the flow rate during operation.
    Type: Application
    Filed: July 21, 2006
    Publication date: October 30, 2008
    Inventors: Trent Deem, Phil Ligrani, Bradley C. Hansen
  • Rotary centrifugal and viscous pumps
    Publication number: 20070059156
    Abstract: A pump device (10a, 10b, 10c) includes means for both transferring rotational momentum to the fluid by viscous forces, and imparting centrifugal forces to the fluid. The pump (10a, 10b) can include a wiper (44) extending partially across at least one rotatable disc surface (48, 48b, 48c) of at least one rotatable disc (52, 52b, 52c). The pump (10c) can include a rotatable shaft (150) with a hollow cavity (154) extending from one end to at least one slot (158) extending radially from the hollow cavity.
    Type: Application
    Filed: September 3, 2004
    Publication date: March 15, 2007
    Applicant: UNIVERSITY OF UTAH RESEARCH FOUNDATION
    Inventors: Danny Blanchard, Phil Ligrani, Bruce Gale