Patents by Inventor David S. Dickey
David S. Dickey 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).
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Publication number: 20140113137Abstract: In one aspect, the present invention provides a process for forming polymeric nanoparticles, which comprises using a static mixer to create a mixed flowing stream of an anti-solvent, e.g., by introducing a liquid anti-solvent into a static mixer, and introducing a polymer solution into the mixed flowing anti-solvent stream such that controlled precipitation of polymeric nanoparticles occurs. The nanoparticles can then be separated from the anti-solvent stream.Type: ApplicationFiled: December 30, 2013Publication date: April 24, 2014Applicant: Cerulean Pharma, Inc.Inventors: John Podobinski, J. Michael Ramstack, David S. Dickey
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Patent number: 8657486Abstract: A beater for a mixer includes a shaft including a mixer attachment portion, the shaft defining a rotational axis of the beater. A first stabilizing arm extends outwardly from the shaft and a second stabilizing arm extends outwardly from the shaft and spaced circumferentially from the first stabilizing arm. A first blade has an upper end connected to the first stabilizing arm at a location spaced from the shaft, a lower end located proximate the rotational axis of the beater and a leading face that transitions from a substantially vertical orientation at the lower end to a downwardly angled orientation at the upper end. A second blade has an upper end connected to the second stabilizing arm at a location spaced from the shaft, a lower end located proximate the rotational axis of the beater and a leading face that transitions from a substantially vertical orientation at the lower end to a downwardly angled orientation at the upper end.Type: GrantFiled: November 12, 2012Date of Patent: February 25, 2014Assignee: Premark FEG L.L.C.Inventors: Joseph C. Huang, Dana D. Herbst, David S. Dickey
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Patent number: 8618240Abstract: In one aspect, the present invention provides a process for forming polymeric nanoparticles, which comprises using a static mixer to create a mixed flowing stream of an anti-solvent, e.g., by introducing a liquid anti-solvent into a static mixer, and introducing a polymer solution into the mixed flowing anti-solvent stream such that controlled precipitation of polymeric nanoparticles occurs. The nanoparticles can then be separated from the anti-solvent stream.Type: GrantFiled: March 11, 2013Date of Patent: December 31, 2013Assignee: Cerulean Pharma, Inc.Inventors: John Podobinski, J. Michael Ramstack, David S. Dickey
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Publication number: 20130273117Abstract: In one aspect, the present invention provides a process for forming polymeric nanoparticles, which comprises using a static mixer to create a mixed flowing stream of an anti-solvent, e.g., by introducing a liquid anti-solvent into a static mixer, and introducing a polymer solution into the mixed flowing anti-solvent stream such that controlled precipitation of polymeric nanoparticles occurs. The nanoparticles can then be separated from the anti-solvent stream.Type: ApplicationFiled: March 11, 2013Publication date: October 17, 2013Inventors: John Podobinski, J. Michael Ramstack, David S. Dickey
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Publication number: 20130107661Abstract: A beater for a mixer includes a shaft including a mixer attachment portion, the shaft defining a rotational axis of the beater. A first stabilizing arm extends outwardly from the shaft and a second stabilizing arm extends outwardly from the shaft and spaced circumferentially from the first stabilizing arm. A first blade has an upper end connected to the first stabilizing arm at a location spaced from the shaft, a lower end located proximate the rotational axis of the beater and a leading face that transitions from a substantially vertical orientation at the lower end to a downwardly angled orientation at the upper end. A second blade has an upper end connected to the second stabilizing arm at a location spaced from the shaft, a lower end located proximate the rotational axis of the beater and a leading face that transitions from a substantially vertical orientation at the lower end to a downwardly angled orientation at the upper end.Type: ApplicationFiled: November 12, 2012Publication date: May 2, 2013Inventors: Joseph C. Huang, Dana D. Herbst, David S. Dickey
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Patent number: 8404799Abstract: In one aspect, the present invention provides a process for forming polymeric nanoparticles, which comprises using a static mixer to create a mixed flowing stream of an anti-solvent, e.g., by introducing a liquid anti-solvent into a static mixer, and introducing a polymer solution into the mixed flowing anti-solvent stream such that controlled precipitation of polymeric nanoparticles occurs. The nanoparticles can then be separated from the anti-solvent steam.Type: GrantFiled: May 24, 2012Date of Patent: March 26, 2013Assignee: Cerulean Pharma Inc.Inventors: John Podobinski, J. Michael Ramstack, David S. Dickey
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Patent number: 8308343Abstract: A beater for a mixer includes a shaft (14) including a mixer attachment portion (16), the shaft defining a rotational axis (A) of the beater. A first stabilizing arm (18) extends outwardly from the shaft and a second stabilizing arm (20) extends outwardly from the shaft and spaced circumferentially from the first stabilizing arm. A first blade (22) has an upper end connected to the first stabilizing arm at a location spaced from the shaft, a lower end located proximate the rotational axis of the beater and a leading face (40) that transitions from a substantially vertical orientation at the lower end to a downwardly angled orientation at the upper end. A second blade (24) has an upper end connected to the second stabilizing arm at a location spaced from the shaft, a lower end located proximate the rotational axis of the beater and a leading face (42) that transitions from a substantially vertical orientation at the lower end to a downwardly angled orientation at the upper end.Type: GrantFiled: June 28, 2007Date of Patent: November 13, 2012Assignee: Premark FEG L.L.C.Inventors: Joseph C. Huang, Dana D. Herbst, David S. Dickey
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Publication number: 20120263653Abstract: In one aspect, the present invention provides a process for forming polymeric nanoparticles, which comprises using a static mixer to create a mixed flowing stream of an anti-solvent, e.g., by introducing a liquid anti-solvent into a static mixer, and introducing a polymer solution into the mixed flowing anti-solvent stream such that controlled precipitation of polymeric nanoparticles occurs. The nanoparticles can then be separated from the anti-solvent steam.Type: ApplicationFiled: May 24, 2012Publication date: October 18, 2012Applicant: CERULEAN PHARMA INC.Inventors: John Podobinski, J. Michael Ramstack, David S. Dickey
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Patent number: 8207290Abstract: In one aspect, the present invention provides a process for forming polymeric nanoparticles, which comprises using a static mixer to create a mixed flowing stream of an anti-solvent, e.g., by introducing a liquid anti-solvent into a static mixer, and introducing a polymer solution into the mixed flowing anti-solvent stream such that controlled precipitation of polymeric nanoparticles occurs. The nanoparticles can then be separated from the anti-solvent stream.Type: GrantFiled: February 8, 2011Date of Patent: June 26, 2012Assignee: Cerulean Pharma Inc.Inventors: John Podobinski, J. Michael Ramstack, David S. Dickey
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Publication number: 20110237748Abstract: In one aspect, the present invention provides a process for forming polymeric nanoparticles, which comprises using a static mixer to create a mixed flowing stream of an anti-solvent, e.g., by introducing a liquid anti-solvent into a static mixer, and introducing a polymer solution into the mixed flowing anti-solvent stream such that controlled precipitation of polymeric nanoparticles occurs. The nanoparticles can then be separated from the anti-solvent stream.Type: ApplicationFiled: February 8, 2011Publication date: September 29, 2011Applicant: CERULEAN PHARMA INC.Inventors: John Podobinski, J. Michael Ramstack, David S. Dickey
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Publication number: 20090310436Abstract: A beater for a mixer includes a shaft (14) including a mixer attachment portion (16), the shaft defining a rotational axis (A) of the beater. A first stabilizing arm (18) extends outwardly from the shaft and a second stabilizing arm (20) extends outwardly from the shaft and spaced circumferentially from the first stabilizing arm. A first blade (22) has an upper end connected to the first stabilizing arm at a location spaced from the shaft, a lower end located proximate the rotational axis of the beater and a leading face (40) that transitions from a substantially vertical orientation at the lower end to a downwardly angled orientation at the upper end. A second blade (24) has an upper end connected to the second stabilizing arm at a location spaced from the shaft, a lower end located proximate the rotational axis of the beater and a leading face (42) that transitions from a substantially vertical orientation at the lower end to a downwardly angled orientation at the upper end.Type: ApplicationFiled: June 28, 2007Publication date: December 17, 2009Inventors: Joseph C. Huang, Dana D. Herbst, David S. Dickey
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Publication number: 20080261299Abstract: A pneumatic bioreactor having a containment vessel which includes a semi-cylindrical concavity defined by the vessel bottom. A mixing apparatus includes a rotational mixer rotatably mounted within the containment vessel about a horizontal axis. The rotational mixer has buoyancy-driven mixing cavities which are fed by a gas supply beneath the rotational mixer. The mixing apparatus extends into the semi-cylindrical concavity to substantially fill that concavity. The rotational mixer is divided into two wheels with outer paddles extending axially outwardly and inner paddles extending axially inwardly on either side of each ring. Blades between the outer and inner paddles form impellers in the wheels to induce axial flow through the rings in opposite directions. The containment vessel may be of film and supported by a structural housing also having a semi-cylindrical concavity defined by the housing bottom.Type: ApplicationFiled: April 23, 2007Publication date: October 23, 2008Inventors: J. Gregory Zeikus, Kyungnam Kim, David S. Dickey