Patents by Inventor Philip D. Radovanovic
Philip D. Radovanovic 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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Patent number: 6986428Abstract: The present invention includes a membrane construction for selectively transferring a constituent to or from a fluid. The membrane construction includes a multi-layer fluid impermeable support sheet having a plurality of supports on at least one side of the support sheet that form a plurality of flow channels. At least one layer of the multi-layer support sheet is a bonding layer. A fluid permeable layer extends over the flow channels and is bonded to the plurality of the supports by the bonding layer.Type: GrantFiled: May 14, 2003Date of Patent: January 17, 2006Assignee: 3M Innovative Properties CompanyInventors: Jonathan F. Hester, Brian E. Spiewak, Philip D. Radovanovic, Stefan R. Reimann, Robert S. Kody
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Publication number: 20040226886Abstract: The present invention includes a membrane construction for selectively transferring a constituent to or from a fluid. The membrane construction includes a multi-layer fluid impermeable support sheet having a plurality of supports on at least one side of the support sheet that form a plurality of flow channels. At least one layer of the multi-layer support sheet is a bonding layer. A fluid permeable layer extends over the flow channels and is bonded to the plurality of the supports by the bonding layer.Type: ApplicationFiled: May 14, 2003Publication date: November 18, 2004Applicant: 3M Innovative Properties CompanyInventors: Jonathan F. Hester, Brian E. Spiewak, Philip D. Radovanovic, Stefan R. Reimann, Robert S. Kody
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Patent number: 6579601Abstract: Conformable multilayer films having alternating layers of a stiff polymeric material and a flexible polymeric material are described.Type: GrantFiled: February 7, 2001Date of Patent: June 17, 2003Assignee: 3M Innovative Properties CompanyInventors: Richard A. Kollaja, David D. Nguyen, Ronald S. Steelman, Buren R. Ree, Steven D. Solomonson, Philip D. Radovanovic
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Patent number: 6486291Abstract: Coated porous materials that exhibit air permeability and repellency to liquids having a surface tension at least equal to or greater than 20 dynes/cm which are suitable for making ileostomy vent filters, transdermal drug substrates, agricultural and medical apparel, as well as paint and chemical protective garments. The coating for the porous material is applied as a curable composition containing fluorocarbon urethane precursors which are cross-linked in situ.Type: GrantFiled: November 30, 2000Date of Patent: November 26, 2002Assignee: Innovative Properties CompanyInventors: James S. Mrozinski, Malcolm B. Burleigh, Philip D. Radovanovic, Brian D. Johnson
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Patent number: 6461724Abstract: Microporous material comprising a polypropylene polymer having at least 20 percent crystallinity; and a compatible, amorphous, glassy polymer, wherein said polymers are miscible in a compound when heated above the melting temperature of the polypropylene polymer and wherein a polypropylene polymer phase separates from the compound when cooled below the crystallization temperature of the polypropylene polymer. Microporous material is made by a thermally induced phase separation process using a compound such as mineral oil to form one phase containing both polymers. The pores of the microporous material resist collapse during processing. Membranes made of this material are useful as battery separators having a good combination of strength, porosity, and ionic resistance when imbibed with an electrolyte.Type: GrantFiled: August 30, 1999Date of Patent: October 8, 2002Assignee: 3M Innovative Properties CompanyInventors: Philip D. Radovanovic, Mario A. Perez, Scott D. Thomas
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Publication number: 20010008687Abstract: Conformable multilayer films having alternating layers of a stiff polymeric material and a flexible polymeric material are described.Type: ApplicationFiled: February 7, 2001Publication date: July 19, 2001Applicant: 3M Innovative Properties CompanyInventors: Richard A. Kollaja, David D. Nguyen, Ronald S. Steelman, Buren R. Ree, Steven D. Solomonson, Philip D. Radovanovic
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Publication number: 20010000183Abstract: Coated porous materials that exhibit air permeability and repellency to liquids having a surface tension at least equal to or greater than 20 dynes/cm which are suitable for making ileostomy vent filters, transdermal drug substrates, agricultural and medical apparel, as well as paint and chemical protective garments. The coating for the porous material is applied as a curable composition containing fluorocarbon urethane precursors which are cross-linked in situ.Type: ApplicationFiled: November 30, 2000Publication date: April 5, 2001Applicant: 3M Innovative Properties CompanyInventors: James S. Mrozinski, Malcolm B. Burleigh, Philip D. Radovanovic, Brian D. Johnson
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Patent number: 6096213Abstract: Briefly, in one aspect, the present invention provides puncture resistant microporous materials made of melt-processable semi-crystalline thermoplastic polymers. The microporous materials can be produced at relatively high rates and at low cost. Films and multilayer constructions made of the microporous materials and methods of making microporous materials also are provided.Type: GrantFiled: August 14, 1998Date of Patent: August 1, 2000Assignee: 3M Innovative Properties CompanyInventors: Philip D. Radovanovic, Scott D. Thomas
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Patent number: 5993954Abstract: A single or multi-layer microporous material of which at least one layer contains a compatible, melt-processible polymer mixture having a first polymer component with a melting point greater than 140.degree. C. and a second polymer component having a melting point lower than 120.degree. C. is described as well as a method of preparing the material. The first polymer component and the second polymer component are miscible in a compound or compatible liquid when heated above the melting temperature of the first polymer component or above the liquid--liquid phase separation temperature and phase separate from the compound or compatible liquid when cooled. The materials are particularly useful as battery separators.Type: GrantFiled: April 29, 1997Date of Patent: November 30, 1999Assignee: 3M Innovative Properties CompanyInventors: Philip D. Radovanovic, Gari P. Krogseng, Clinton P. Waller, Jr., James S. Mrozinski, Dennis L. Krueger
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Patent number: 5989698Abstract: Coated porous materials that exhibit air permeability and repellency to liquids having a surface tension at least equal to or greater than 20 dynes/cm which are suitable for making ileostomy vent filters, transdermal drug substrates, agricultural and medical apparel, as well as paint and chemical protective garments. The coating for the porous material is applied as a curable composition containing fluorocarbon urethane precursors which are cross-linked in situ.Type: GrantFiled: February 10, 1997Date of Patent: November 23, 1999Assignee: 3M Innovative Properties CompanyInventors: James S. Mrozinski, Malcolm B. Burleigh, Philip D. Radovanovic, Brian D. Johnson
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Patent number: 5981038Abstract: The invention discloses a method of preventing transmission of viral pathogens between a source of viral pathogens and a target of said viral pathogens comprising positioning between said source and said target a microporous membrane material comprising (1) a thermoplastic polymer or polytetrafluoroethylene and (2) a water- and oil-repellent fluorochemical compound which provides said membrane with oleophobic, hydrophobic and viral barrier properties.Type: GrantFiled: October 19, 1995Date of Patent: November 9, 1999Assignee: 3M Innovative Properties Company Minnesota Mining and Manufacturing Co.Inventors: William K. Weimer, Gretchen E. Keenan, Robert J. Kinney, James S. Mrozinski, Philip D. Radovanovic
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Patent number: 5935370Abstract: The invention discloses a method of preventing transmission of viral pathogens between a source of viral pathogens and a target of said viral pathogens comprising positioning between said source and said target a microporous membrane material comprising (1) a thermoplastic polymer or polytetrafluoroethylene and (2) a water- and oil-repellent fluorochemical compound which provides said membrane with oleophobic, hydrophobic and viral barrier properties.Type: GrantFiled: October 19, 1995Date of Patent: August 10, 1999Assignee: #M Innovative Properties Company Minnesota Mining and Manufacturing Co.Inventors: William K. Weimer, Gretchen E. Keenan, Robert J. Kinney, James S. Mrozinski, Philip D. Radovanovic
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Patent number: 5738111Abstract: The invention discloses a method of preventing transmission of viral pathogens between a source of viral pathogens and a target of said viral pathogens comprising positioning between said source and said target a microporous membrane material comprising (1) a thermoplastic polymer or polytetrafluoroethylene and (2) a water- and oil-repellent fluorochemical compound which provides said membrane with oleophobic, hydrophobic and viral barrier properties.Type: GrantFiled: December 23, 1996Date of Patent: April 14, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: William K. Weimer, Gretchen E. Keenan, Robert J. Kinney, James S. Mrozinski, Philip D. Radovanovic
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Patent number: 5690949Abstract: The invention discloses a method of preventing transmission of viral pathogens between a source of viral pathogens and a target of said viral pathogens comprising positioning between said source and said target a microporous membrane material comprising (1) a thermoplastic polymer or polytetrafluoroethylene and (2) a water- and oil-repellent fluorochemical compound which provides said membrane with oleophobic, hydrophobic and viral barrier properties.Type: GrantFiled: October 19, 1995Date of Patent: November 25, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: William K. Weimer, Gretchen E. Keenan, Robert J. Kinney, James S. Mrozinski, Philip D. Radovanovic