Patents by Inventor Henry DiGregorio

Henry DiGregorio 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: 9309042
    Abstract: A liquid dispensing syringe and method for reducing piston bounce includes a barrel and a piston. The barrel defines an interior reservoir having an inner surface. The piston is disposed within the interior reservoir and has a proximal end and an elastic portion configured to expand under the influence of a pressurized gas. A first circumferentially extending wiper seal is positioned on the piston. The first wiper seal liquidly seals against the inner surface. A second circumferentially extending wiper seal is positioned on the piston proximally from the first wiper seal on the elastic portion. As such, the expanding elastic portion forces the second wiper seal to fluidly sealing against the inner surface for inhibiting the pressurized gas from flowing distally beyond the second wiper seal in order to reduce piston bounce.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: April 12, 2016
    Assignee: NORDSON CORPORATION
    Inventors: Henry Digregorio, James A. Gadol, Jeff Groene
  • Publication number: 20140367409
    Abstract: A liquid dispensing syringe and method for reducing piston bounce includes a barrel and a piston. The barrel defines an interior reservoir having an inner surface. The piston is disposed within the interior reservoir and has a proximal end and an elastic portion configured to expand under the influence of a pressurized gas. A first circumferentially extending wiper seal is positioned on the piston. The first wiper seal liquidly seals against the inner surface. A second circumferentially extending wiper seal is positioned on the piston proximally from the first wiper seal on the elastic portion. As such, the expanding elastic portion forces the second wiper seal to fluidly sealing against the inner surface for inhibiting the pressurized gas from flowing distally beyond the second wiper seal in order to reduce piston bounce.
    Type: Application
    Filed: May 19, 2014
    Publication date: December 18, 2014
    Applicant: NORDSON CORPORATION
    Inventors: Henry Digregorio, James A. Gadol, Jeff Groene
  • Patent number: 8567452
    Abstract: A syringe for holding fluids susceptible to void formation when frozen and thawed before use. The interior surface of the syringe sidewall may be roughened, which serves to prevent or significantly reduce the incidence of void formation in the fluid. The required level of surface roughening for counteracting void formation may be reduced by increasing the sidewall flexibility. Alternatively, the flexibility of the syringe sidewall may operate over certain thickness ranges to prevent or significantly reduce void formation in the fluid without intentionally roughening the interior surface.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: October 29, 2013
    Assignee: Nordson Corporation
    Inventors: Henry Digregorio, John Higson, Jeffery White
  • Patent number: 8313455
    Abstract: Syringes for holding fluids susceptible to void formation when the syringe and fluid are frozen and thawed before use. The interior surface of the syringe barrel is modified by exposure to a plasma such that the incidence of void formation in the fluid is prevented or, at the least, significantly reduced in comparison with conventional syringes.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: November 20, 2012
    Assignee: Nordson Corporation
    Inventors: Henry DiGregorio, David Foote, James Getty
  • Publication number: 20120279998
    Abstract: A syringe for holding fluids susceptible to void formation when frozen and thawed before use. The interior surface of the syringe sidewall may be roughened, which serves to prevent or significantly reduce the incidence of void formation in the fluid. The required level of surface roughening for counteracting void formation may be reduced by increasing the sidewall flexibility. Alternatively, the flexibility of the syringe sidewall may operate over certain thickness ranges to prevent or significantly reduce void formation in the fluid without intentionally roughening the interior surface.
    Type: Application
    Filed: July 17, 2012
    Publication date: November 8, 2012
    Applicant: NORDSON CORPORATION
    Inventors: Henry DiGregorio, John Higson, Jeffery White
  • Publication number: 20120234720
    Abstract: Syringes for holding fluids susceptible to void formation when the syringe and fluid are frozen and thawed before use. The interior surface of the syringe barrel is modified by exposure to a plasma such that the incidence of void formation in the fluid is prevented or, at the least, significantly reduced in comparison with conventional syringes.
    Type: Application
    Filed: May 29, 2012
    Publication date: September 20, 2012
    Applicant: NORDSON CORPORATION
    Inventors: Henry DiGregorio, David Foote, James Getty
  • Patent number: 8241544
    Abstract: A syringe for holding fluids susceptible to void formation when frozen and thawed before use. The interior surface of the syringe sidewall may be roughened, which serves to prevent or significantly reduce the incidence of void formation in the fluid. The required level of surface roughening for counteracting void formation may be reduced by increasing the sidewall flexibility. Alternatively, the flexibility of the syringe sidewall may operate over certain thickness ranges to prevent or significantly reduce void formation in the fluid without intentionally roughening the interior surface.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: August 14, 2012
    Assignee: Nordson Corporation
    Inventors: Henry DiGregorio, John Higson, Jeffery White
  • Patent number: 8231568
    Abstract: Syringes for holding fluids susceptible to void formation when the syringe and fluid are frozen and thawed before use. The interior surface of the syringe barrel is modified by exposure to a plasma such that the incidence of void formation in the fluid is prevented or, at the least, significantly reduced in comparison with conventional syringes.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: July 31, 2012
    Assignee: Nordson Corporation
    Inventors: Henry DiGregorio, David Foote, James Getty
  • Publication number: 20100163574
    Abstract: A syringe for holding fluids susceptible to void formation when frozen and thawed before use. The interior surface of the syringe sidewall may be roughened, which serves to prevent or significantly reduce the incidence of void formation in the fluid. The required level of surface roughening for counteracting void formation may be reduced by increasing the sidewall flexibility. Alternatively, the flexibility of the syringe sidewall may operate over certain thickness ranges to prevent or significantly reduce void formation in the fluid without intentionally roughening the interior surface.
    Type: Application
    Filed: March 10, 2010
    Publication date: July 1, 2010
    Applicant: NORDSON CORPORATION
    Inventors: Henry DiGregorio, John Higson, Jeffery White
  • Patent number: 7677419
    Abstract: A syringe for holding fluids susceptible to void formation when frozen and thawed before use. The interior surface of the syringe sidewall may be roughened, which serves to prevent or significantly reduce the incidence of void formation in the fluid. The required level of surface roughening for counteracting void formation may be reduced by increasing the sidewall flexibility. Alternatively, the flexibility of the syringe sidewall may operate over certain thickness ranges to prevent or significantly reduce void formation in the fluid without intentionally roughening the interior surface.
    Type: Grant
    Filed: April 21, 2004
    Date of Patent: March 16, 2010
    Assignee: Nordson Corporation
    Inventors: Henry DiGregorio, John Higson, Jefferey White
  • Publication number: 20090099512
    Abstract: Syringes for holding fluids susceptible to void formation when the syringe and fluid are frozen and thawed before use. The interior surface of the syringe barrel is modified by exposure to a plasma such that the incidence of void formation in the fluid is prevented or, at the least, significantly reduced in comparison with conventional syringes.
    Type: Application
    Filed: October 15, 2008
    Publication date: April 16, 2009
    Applicant: Nordson Corporation
    Inventors: Henry DiGregorio, David Foote, James Getty
  • Publication number: 20050236063
    Abstract: A syringe for holding fluids susceptible to void formation when frozen and thawed before use. The interior surface of the syringe sidewall may be roughened, which serves to prevent or significantly reduce the incidence of void formation in the fluid. The required level of surface roughening for counteracting void formation may be reduced by increasing the sidewall flexibility. Alternatively, the flexibility of the syringe sidewall may operate over certain thickness ranges to prevent or significantly reduce void formation in the fluid without intentionally roughening the interior surface.
    Type: Application
    Filed: April 21, 2004
    Publication date: October 27, 2005
    Applicant: Nordson Corporation
    Inventors: Henry DiGregorio, John Higson, Jeffery White