Patents by Inventor Allen R. Wons
Allen R. Wons 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: 7353956Abstract: Blood collection systems include an integral flexible filter to remove leukocytes from blood components.Type: GrantFiled: January 21, 2004Date of Patent: April 8, 2008Assignee: Fenwal, Inc.Inventors: Daniel R Lynn, Julian P Breillatt, Jr., John C Burnham, David B. Howard, Allen R Wons
-
Patent number: 7278541Abstract: A method of making a blood filter assembly provides first and second filter housing elements from a flexible thermoplastic material, each of the first and second housing elements including a molded port. The method places a filter media between the first and second filter housing elements and applies radio frequency heating and pressure to form a peripheral seal that joins the first and second filter housing elements to the filter media and encapsulates the filter media between the first and second housing elements.Type: GrantFiled: January 26, 2004Date of Patent: October 9, 2007Assignee: Fenwal, Inc.Inventors: Julian P Breillatt, Jr., John C Burnham, Allen R Wons, Randy Murphy, Daryl R Calhoun, Daniel R Lynn
-
Publication number: 20040154974Abstract: A method of making a blood filter assembly provides first and second filter housing elements from a flexible thermoplastic material, each of the first and second housing elements including a molded port. The method places a filter media between the first and second filter housing elements and applies radio frequency heating and pressure to form a peripheral seal that joins the first and second filter housing elements to the filter media and encapsulates the filter media between the first and second housing elements.Type: ApplicationFiled: January 26, 2004Publication date: August 12, 2004Applicant: Baxter International Inc.Inventors: Julian P. Breillatt, John C. Burnham, Allen R. Wons, Randy Murphy, Daryl R. Calhoun, Daniel R. Lynn
-
Publication number: 20040149646Abstract: Blood collection systems include an integral flexible filter to remove leukocytes from blood components.Type: ApplicationFiled: January 21, 2004Publication date: August 5, 2004Applicant: Baxter International Inc.Inventors: Daniel R. Lynn, Julian P. Breillatt, John C. Burnham, David B. Howard, Allen R. Wons
-
Patent number: 6745902Abstract: Blood collection systems include an integral flexible filter to remove leukocytes from blood components.Type: GrantFiled: May 31, 2002Date of Patent: June 8, 2004Assignee: Baxter International Inc.Inventors: Daniel R Lynn, Julian C Breillatt, John C Burnham, David B. Howard, Allen R Wons
-
Patent number: 6688476Abstract: A fluid filter assembly for filtering fluids such as blood is described. The assembly includes first and second filter housing elements formed by an injection molding process. Each element is flexible and includes a peripheral flange formed thereabout and a fluid communicating port formed therein. Filter media, such as a filter membrane, is sealed between the mating flanges of two elements. The fluid filter assembly is capable of collapsing and expanding during the filtration process depending upon the composition of the fluid passed there through. A method for making the filter assembly and systems for using the filter assembly are also disclosed.Type: GrantFiled: February 27, 2002Date of Patent: February 10, 2004Assignee: Baxter International Inc.Inventors: Julian P Breillatt, Jr., John C Burnham, Allen R Wons, Randy Murphy, Daryl R Calhoun, Daniel R Lynn
-
Publication number: 20030209479Abstract: A blood collection system has a container for holding blood and a filter communicating with the container, mutually arranged for handling as a unit. The filter (20) contains a fibrous filter medium (28) housed within two flexible sheets (32, 34) of plastic. A first seal (36) joins the sheets (32, 34) directly to the filter medium (28) inboard of the peripheral edge (40) of the filter medium (28), and a second seal (38) joins the sheets (32, 34) outboard of the peripheral edge (40) of the filter medium (28). A region (42) of the filter medium (28) extends between the first and second seals (36, 38) to cushion contact with the filter housing during handling.Type: ApplicationFiled: March 10, 2003Publication date: November 13, 2003Inventors: Daniel R Lynn, Allen R Wons, Luc Mespreuve, Daniel Vandendaul, Gregory Soudant, Tat C Mui, Daniel M Karlovsky, Randy Murphey, Daryl R Calhoun, Shin-Ichiroh Oka, Michihiro Tsuji
-
Patent number: 6601710Abstract: A fluid filter assembly for filtering fluids such as blood is described. The assembly includes first and second filter housing elements formed by an injection molding process. Each element is flexible and includes a peripheral flange formed thereabout and a fluid communicating port formed therein. Filter media, such as a filter membrane, is sealed between the mating flanges of two elements. The fluid filter assembly is capable of collapsing and expanding during the filtration process depending upon the composition of the fluid passed there through. A method for making the filter assembly and systems for using the filter assembly are also disclosed.Type: GrantFiled: January 23, 2002Date of Patent: August 5, 2003Assignee: Baxter International Inc.Inventors: Daryl R. Calhoun, Randy Murphey, Allen R. Wons, Roberto E. Perez
-
Publication number: 20030000886Abstract: A fluid filter assembly for filtering fluids such as blood. The assembly includes first and second filter housing elements formed by an injection molding process. Each element is flexible and includes a peripheral flange formed thereabout and a fluid communicating port formed therein. Filter media, such as a filter membrane, is sealed between the mating flanges of two elements. The fluid filter assembly is capable of collapsing and expanding during the filtration process depending upon the composition of the fluid passed there through. A method for making the filter assembly and systems for using the filter assembly are also disclosed.Type: ApplicationFiled: February 27, 2002Publication date: January 2, 2003Applicant: Baxter International Inc.Inventors: Julian P. Breillatt, John C. Burnham, Allen R. Wons, Randy Murphy, Daryl R. Calhoun, Daniel R. Lynn
-
Publication number: 20020148764Abstract: Blood collection systems include an integral flexible filter to remove leukocytes from blood components.Type: ApplicationFiled: May 31, 2002Publication date: October 17, 2002Applicant: Baxter International Inc.Inventors: Daniel R. Lynn, Julian P. Breillatt, John C. Burnham, David B. Howard, Allen R. Wons
-
Publication number: 20020113003Abstract: A blood collection system has a container for holding blood, and a filter communicating with the container, which are mutually arranged for handling as a unit. The filter contains a fibrous filter medium housed within two flexible sheets of plastic. A first seal joins the sheets directly to the filter medium inboard of the peripheral edge of the filter medium, and a second seal joins the sheets outboard of the peripheral edge of the filter medium. A region of the filter medium extends between the first and second seals to cushion contact with the filter housing during handling.Type: ApplicationFiled: August 1, 2001Publication date: August 22, 2002Applicant: Baxter International, Inc.Inventors: Daniel R. Lynn, Allen R. Wons, Gregory Maurice Soudant, Daniel Gaston Vandendaul, Luc Joseph Andre Mespreuve
-
Publication number: 20020063090Abstract: A fluid filter assembly for filtering fluids such as blood. The assembly includes first and second filter housing elements formed by an injection molding process. Each element is flexible and includes a peripheral flange formed thereabout and a fluid communicating port formed therein. Filter media, such as a filter membrane, is sealed between the mating flanges of two elements. The fluid filter assembly is capable of collapsing and expanding during the filtration process depending upon the composition of the fluid passed there through. A method for making the filter assembly and systems for using the filter assembly are also disclosed.Type: ApplicationFiled: January 23, 2002Publication date: May 30, 2002Applicant: Baxter International Inc.Inventors: Daryl R. Calhoun, Randy Murphey, Allen R. Wons, Roberto E. Perez
-
Publication number: 20010037978Abstract: A fluid filter assembly for filtering fluids such as blood. The assembly includes first and second filter housing elements formed by an injection molding process. Each element is flexible and includes a peripheral flange formed thereabout and a fluid communicating port formed therein. Filter media, such as a filter membrane, is sealed between the mating flanges of two elements. The fluid filter assembly is capable of collapsing and expanding during the filtration process depending upon the composition of the fluid passed there through. A method for making the filter assembly and systems for using the filter assembly are also disclosed.Type: ApplicationFiled: April 20, 1999Publication date: November 8, 2001Applicant: DARYL R. CALHOUNInventors: DARYL R. CALHOUN, RANDY MURPHEY, ALLEN R. WONS, ROBERTO E. PEREZ
-
Patent number: 6213334Abstract: A flexible, three-dimensional container is made by a prescribed vacuum-molding and heat sealing process. The container possesses a precise, defined geometry before and during use. The container is formed from first and second walls. The first wall has a planar area and a vacuum-molded cavity area drawn out of the plane of the planar area into a predefined three-dimensional geometry. A second wall overlies the first wall to close the cavity area and thereby forms an interior compartment. A thermal seal joins the two walls together. The seal is formed by heating the second wall and the first wall in the planar area, while assuring that the cavity area of the first wall is not subject to heating and possible deformation of its precise vacuum-molded geometry.Type: GrantFiled: September 5, 1996Date of Patent: April 10, 2001Assignee: Baxter International INCInventors: Philip H. Coelho, Ludwig Wolf, Jr., David P. Fisher, Allen R. Wons, William Bratten
-
Patent number: 5772880Abstract: A container has first and second walls, each formed of a thermoplastic sheet having a peripheral edge. A peripheral seal joins the peripheral edges together to form an interior chamber enclosed by the first and second walls. A port communicates with the interior chamber. The port is spaced from and does not extend through the peripheral seal. The port comprises a hollow thermoplastic tube, which extends through a slit in one of the first and second sheets and is oriented tangentially thereto. The slit is fused by heat about the tube, forming a heat fused junction. A medical product or a blood filter material can be housed in the interior chamber.Type: GrantFiled: August 20, 1996Date of Patent: June 30, 1998Assignee: Baxter International, Inc.Inventors: Daniel R. Lynn, Billy W. Minshall, Allen R. Wons, David P. Fisher
-
Patent number: 5591337Abstract: A blood filtration device encapsulates a filter pad assembly Within a flexible housing. The filter pad assembly includes first and second filter media layers. A first heat and pressure sealed region integrally bonds the peripheries of the first and second media layers together. The flexible housing comprises a peripheral rim aligned with the first heat and pressure sealed region of the first media layer. A second heat and pressure sealed region, formed after the first heat and pressure sealed region, joins the rim of the flexible housing to the first heat and pressure sealed region, thereby forming a composite seal that encapsulates the filter pad assembly within the housing.Type: GrantFiled: December 22, 1993Date of Patent: January 7, 1997Assignee: Baxter International Inc.Inventors: Daniel R. Lynn, Billy W. Minshall, Allen R. Wons, David P. Fisher
-
Patent number: 5507904Abstract: A port is formed in a thermoplastic container wall by slitting the wall, inserting a thermoplastic tube through the slit, placing a mandrel in the tube, placing opposed dies defining a bore over the sheet and tube, and dielectrically heating the thermoplastic to fuse the tube and sheet. Preferably the bore defined by the dies is of a diameter slightly less than that of the tube, and has an enlarged central area which forms a thickened section of material over the slit.Type: GrantFiled: September 27, 1994Date of Patent: April 16, 1996Assignee: Baxter International Inc.Inventors: David P. Fisher, Allen R. Wons