Patents by Inventor Carol L. Knox
Carol L. Knox 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: 10857252Abstract: Microporous materials that include thermoplastic organic polyolefin polymer (e.g., ultrahigh molecular weight polyolefin, such as polyethylene), particulate filler (e.g., precipitated silica), and a network of interconnecting pores, are described. The microporous materials of the present invention possess controlled volatile material transfer properties. The microporous materials can have a density of at least 0.8 g/cm3; and a volatile material transfer rate, from the volatile material contact surface to the vapor release surface of the microporous material, of from 0.04 to 0.6 mg/(hour*cm2). In addition, when volatile material is transferred from the volatile material contact surface to the vapor release surface, the vapor release surface is substantially free of volatile material in liquid form.Type: GrantFiled: January 5, 2018Date of Patent: December 8, 2020Assignee: PPG Industries Ohio, Inc.Inventors: James L. Boyer, Christine Gardner, Carol L. Knox, Luciano M. Parrinello, Robert Swisher
-
Publication number: 20180126024Abstract: Microporous materials that include thermoplastic organic polyolefin polymer (e.g., ultrahigh molecular weight polyolefin, such as polyethylene), particulate filler (e.g., precipitated silica), and a network of interconnecting pores, are described. The microporous materials of the present invention possess controlled volatile material transfer properties. The microporous materials can have a density of at least 0.8 g/cm3; and a volatile material transfer rate, from the volatile material contact surface to the vapor release surface of the microporous material, of from 0.04 to 0.6 mg/(hour*cm2). In addition, when volatile material is transferred from the volatile material contact surface to the vapor release surface, the vapor release surface is substantially free of volatile material in liquid form.Type: ApplicationFiled: January 5, 2018Publication date: May 10, 2018Inventors: James L. Boyer, Christine Gardner, Carol L. Knox, Luciano M. Parrinello, Robert Swisher
-
Patent number: 9861719Abstract: Microporous materials that include thermoplastic organic polyolefin polymer (e.g., ultrahigh molecular weight polyolefin, such as polyethylene), particulate filler (e.g., precipitated silica), and a network of interconnecting pores, are described. The microporous materials of the present invention possess controlled volatile material transfer properties. The microporous materials can have a density of at least 0.8 g/cm3; and a volatile material transfer rate, from the volatile material contact surface to the vapor release surface of the microporous material, of from 0.04 to 0.6 mg/(hour*cm2). In addition, when volatile material is transferred from the volatile material contact surface to the vapor release surface, the vapor release surface is substantially free of volatile material in liquid form.Type: GrantFiled: October 4, 2013Date of Patent: January 9, 2018Assignee: PPG Industries Ohio, Inc.Inventors: James L. Boyer, Christine Gardner, Carol L. Knox, Luciano M. Parrinello, Robert Swisher
-
Patent number: 9546326Abstract: The present invention is directed to methods of separating a fluid emulsion stream into a hydrocarbon stream and an aqueous stream, by contacting the stream with a microporous membrane to yield a hydrocarbon product stream and an aqueous product stream. The membrane comprises a substantially hydrophobic, polymeric matrix, and substantially hydrophilic, finely divided, particulate, substantially water-insoluble filler distributed throughout the matrix. The polymeric matrix has a mean pore size less than 1.0 micron, and the purities of the product streams are independent of the flux rate of the aqueous product stream and the pore size of the membrane.Type: GrantFiled: February 28, 2014Date of Patent: January 17, 2017Assignee: PPG Industries Ohio, Inc.Inventors: Qunhui Guo, Carol L. Knox, Truman Wilt, Peter Votruba-Drzal, Charles F. Kahle, Gregory J. McCollum
-
Patent number: 9073041Abstract: The present invention is directed to a separation medium comprising rotary dried or spray dried precipitated silica. The silica has a pore surface area P wherein log10 P>2.2, and the ratio of BET to CTAB is at least 1.0 measured prior to any surface modification of the silica. The present invention is further directed to a method of separating suspended or dissolved materials from a fluid stream, comprising contacting the stream with the separation medium described above.Type: GrantFiled: August 30, 2012Date of Patent: July 7, 2015Assignee: PPG Industries Ohio, Inc.Inventors: Qunhui Guo, Carol L. Knox, Raphael O. Kollah, Justin J. Martin, Shantilal M. Mohnot, Timothy A. Okel, Daniel E. Rardon
-
Publication number: 20140246356Abstract: The present invention is directed to methods of separating a fluid emulsion stream into a hydrocarbon stream and an aqueous stream, by contacting the stream with a microporous membrane to yield a hydrocarbon product stream and an aqueous product stream. The membrane comprises a substantially hydrophobic, polymeric matrix, and substantially hydrophilic, finely divided, particulate, substantially water-insoluble filler distributed throughout the matrix. The polymeric matrix has a mean pore size less than 1.0 micron, and the purities of the product streams are independent of the flux rate of the aqueous product stream and the pore size of the membrane.Type: ApplicationFiled: February 28, 2014Publication date: September 4, 2014Inventors: Qunhui Guo, Carol L. Knox, Truman Wilt, Peter Votruba-Drzal, Charles F. Kahle, Gregory J. McCollum
-
Publication number: 20140037922Abstract: Microporous materials that include thermoplastic organic polyolefin polymer (e.g., ultrahigh molecular weight polyolefin, such as polyethylene), particulate filler (e.g., precipitated silica), and a network of interconnecting pores, are described. The microporous materials of the present invention possess controlled volatile material transfer properties. The microporous materials can have a density of at least 0.8 g/cm3; and a volatile material transfer rate, from the volatile material contact surface to the vapor release surface of the microporous material, of from 0.04 to 0.6 mg/(hour*cm2). In addition, when volatile material is transferred from the volatile material contact surface to the vapor release surface, the vapor release surface is substantially free of volatile material in liquid form.Type: ApplicationFiled: October 4, 2013Publication date: February 6, 2014Applicant: PPG INDUSTRIES OHIO, INC.Inventors: James L. Boyer, Christine Gardner, Carol L. Knox, Luciano M. Parrinello, Robert Swisher
-
Publication number: 20130228521Abstract: The present invention is directed to a separation medium comprising rotary dried or spray dried precipitated silica. The silica has a pore surface area P wherein log10 P>2.2, and the ratio of BET to CTAB is at least 1.0 measured prior to any surface modification of the silica. The present invention is further directed to a method of separating suspended or dissolved materials from a fluid stream, comprising contacting the stream with the separation medium described above.Type: ApplicationFiled: August 30, 2012Publication date: September 5, 2013Applicant: PPG INDUSTRIES OHIO, INC.Inventors: Qunhui Guo, Carol L. Knox, Raphael O. Kollah, Justin J. Martin, Shantilal M. Mohnot, Timothy A. OKel, Daniel E. Rardon
-
Publication number: 20130228519Abstract: The present invention is directed to ultrafiltration membranes comprising a microporous material, said microporous material comprising: (a) a polyolefin matrix present in an amount of at least 2 percent by weight, (b) finely divided, particulate, substantially water-insoluble silica filler distributed throughout said matrix, said filler constituting from about 10 percent to about 90 percent by weight of said microporous material substrate; and (c) at least 35 percent by volume of a network of interconnecting pores communicating throughout the microporous material. The present invention is also directed to methods of separating suspended or dissolved materials from a fluid stream such as a liquid or gaseous stream, comprising passing the fluid stream through the ultrafiltration membrane described above.Type: ApplicationFiled: August 30, 2012Publication date: September 5, 2013Applicant: PPG INDUSTRIES OHIO, INC.Inventors: Qunhui Guo, Carol L, Knox, Raphael O. Kollah, Justin J. Martin, Timothy A. Okel, Daniel E. Rardon, Christine Gardner, Shantilal M. Mohnot
-
Publication number: 20130228529Abstract: The present invention is directed to microfiltration membranes comprising a microporous material, said microporous material comprising: (a) a polyolefin matrix present in an amount of at least 2 percent by weight, (b) finely divided, particulate, substantially water-insoluble silica filler distributed throughout said matrix, said filler constituting from about 10 percent to about 90 percent by weight of said microporous material substrate, wherein the weight ratio of filler to polyolefin is greater than 4:1; and (c) at least 35 percent by volume of a network of interconnecting pores communicating throughout the microporous material. The present invention is also directed to methods of separating suspended or dissolved materials from a fluid stream such as a liquid or gaseous stream, comprising passing the fluid stream through the microfiltration membrane described above.Type: ApplicationFiled: August 30, 2012Publication date: September 5, 2013Applicant: PPG Industries Ohio, Inc.Inventors: Qunhui Guo, Carol L. Knox, Raphael O. Kollah, Justin J. Martin, Timothy A. Okel, Daniel E. Rardon, Christine Gardner, Shantilal M. Mohnot
-
Patent number: 8435631Abstract: Microporous materials that include thermoplastic organic polyolefin polymer (e.g., ultrahigh molecular weight polyolefin, such as polyethylene), particulate filler (e.g., precipitated silica), and a network of interconnecting pores, are described. The microporous materials of the present invention possess controlled volatile material transfer properties. The microporous materials can have a density of at least 0.8 g/cm3; and a volatile material transfer rate, from the volatile material contact surface to the vapor release surface of the microporous material, of from 0.04 to 0.6 mg/(hour*cm2). In addition, when volatile material is transferred from the volatile material contact surface to the vapor release surface, the vapor release surface is substantially free of volatile material in liquid form.Type: GrantFiled: April 15, 2010Date of Patent: May 7, 2013Assignee: PPG Industries Ohio, Inc.Inventors: James L. Boyer, Christine Gardenr, Carol L. Knox, Luciano M. Parrinello, Robert Swisher
-
Publication number: 20120231242Abstract: Microporous materials that include thermoplastic organic polyolefin polymer (e.g., ultrahigh molecular weight polyolefin, such as polyethylene), particulate filler (e.g., precipitated silica), and a network of interconnecting pores, are described. The microporous materials of the present invention possess controlled volatile material transfer properties. The microporous materials can have a density of at least 0.8 g/cm3; and a volatile material transfer rate, from the volatile material contact surface to the vapor release surface of the microporous material, of from 0.04 to 0.6 mg/(hour*cm2). In addition, when volatile material is transferred from the volatile material contact surface to the vapor release surface, the vapor release surface is substantially free of volatile material in liquid form.Type: ApplicationFiled: May 16, 2012Publication date: September 13, 2012Applicant: PPG INDUSTRIES OHIO, INC.Inventors: James L. Boyer, Christine Gardenr, Carol L. Knox, Luciano M. Parrinello, Robert Swisher
-
Publication number: 20110256364Abstract: Microporous materials that include thermoplastic organic polyolefin polymer (e.g., ultrahigh molecular weight polyolefin, such as polyethylene), particulate filler (e.g., precipitated silica), and a network of interconnecting pores, are described. The microporous materials of the present invention possess controlled volatile material transfer properties. The microporous materials can have a density of at least 0.8 g/cm3; and a volatile material transfer rate, from the volatile material contact surface to the vapor release surface of the microporous material, of from 0.04 to 0.6 mg/(hour*cm2). In addition, when volatile material is transferred from the volatile material contact surface to the vapor release surface, the vapor release surface is substantially free of volatile material in liquid form.Type: ApplicationFiled: April 15, 2010Publication date: October 20, 2011Applicant: PPG Industries Ohio, Inc.Inventors: James L. Boyer, Christine Gardenr, Carol L. Knox, Luciano M. Parrinello, Robert Swisher
-
Patent number: 7907346Abstract: Photochromic materials and photochromic compositions and articles including the photochromic materials are disclosed. The photochromic materials may be the reaction product of a hyperbranched polyester polyol having, on average, at least two reactive hydroxyl groups, and at least one photochromic indeno-fused naphthopyran.Type: GrantFiled: March 16, 2007Date of Patent: March 15, 2011Assignee: Transitions Optical, Inc.Inventors: Shanti Swarup, Carol L. Knox, Feng Wang
-
Patent number: 7465414Abstract: Describes an optical article, e.g., an ophthalmic photochromic article, such as a lens, in which the article includes: (1) a transparent substrate, such as a thermoset or thermoplastic plastic substrate, (2) a multiply laminate adjacent to at least one surface of the substrate, the laminate comprising (i) a transparent, thermoplastic polyurethane film, the thermoplastic, polyurethane film providing a desirable light filtering property, e.g., photochromism, and being juxtaposed to the surface of the substrate, the polyurethane being formed from a material comprising polyether-based polyurethane or polycarbonate-based polyurethane, and (ii) a transparent protective film of polymeric material, e.g., polycarbonate film, adjacent to the thermoplastic polyurethane film. Describes also the aforedescribed optical article having an abrasion-resistant coating affixed to the protective film, e.g.Type: GrantFiled: November 14, 2002Date of Patent: December 16, 2008Assignee: Transitions Optical, Inc.Inventors: Carol L. Knox, William H. McDonald
-
Patent number: 7465415Abstract: Various non-limiting embodiments disclosed herein related to photochromic materials comprising the reaction product of (a) at least one ring-opening cyclic monomer, and (b) a photochromic initiator. Other non-limiting embodiments related to photochromic materials represented by: wherein S? comprises the at least one ring-opened cyclic monomer as set forth herein. Other non-limiting embodiments related to photochromic compositions, optical elements, and methods of inhibiting migration of a photochromic material in a polymeric material using the photochromic materials disclosed herein. Methods of making such photochromic materials, compositions, and optical elements are also disclosed.Type: GrantFiled: July 30, 2004Date of Patent: December 16, 2008Assignee: PPG Industries Ohio, Inc.Inventors: Feng Wang, Barry Van Gemert, Kevin J. Stewart, Carol L. Knox, Anu Chopra, Patrick M. Brown
-
Publication number: 20080225400Abstract: Photochromic materials and photochromic compositions and articles including the photochromic materials are disclosed. The photochromic materials may be the reaction product of a hyperbranched polyester polyol having, on average, at least two reactive hydroxyl groups, and at least one photochromic indeno-fused naphthopyran.Type: ApplicationFiled: March 16, 2007Publication date: September 18, 2008Applicant: TRANSITIONS OPTICAL, INC.Inventors: Shanti Swarup, Carol L. Knox, Feng Wang
-
Publication number: 20080187749Abstract: Provided is an optical element having at least (a) a support polymeric film layer of film material having opposing first and second sides, (b) a second polymeric film layer having opposing first and second sides, the second layer including a film material exhibiting a light influencing property, and (c) optionally, an adhesive layer interposed between and connected to at least a portion of the first side of support layer (a) and the second side of second layer (b). The film material of support layer (a) and the film material of second layer (b) are the same or different.Type: ApplicationFiled: December 13, 2007Publication date: August 7, 2008Applicant: PPG INDUSTRIES OHIO, INC.Inventors: John J. Cael, Carol L. Knox, Jonathan M. Mack, Feng Wang, Robert S. Wenzinger
-
Patent number: 7261843Abstract: Describes a photochromic article, e.g., an ophthalmic photochromic plastic article, such as a lens, in which the article includes (1) a rigid substrate, e.g., a transparent substrate such as a glass or organic polymeric substrate, as for example, a thermoset or thermoplastic substrate, (2) a photochromic polymeric coating appended to at least a portion of at least one surface of the substrate, the photochromic polymeric coating containing a photochromic amount of at least one organic photochromic material, e.g., spirooxazine, naphthopyran, diarylethene and/or fulgide, and (3) a thermally cured transparent thermoset polymeric coating superposed on, e.g., coherently appended to, the photochromic coating, the thermally cured polymeric coating being harder than the photochromic polymeric coating. Describes also the aforedescribed photochromic article having an abrasion-resistant coating affixed to the thermally cured polymer coating, e.g.Type: GrantFiled: March 4, 2004Date of Patent: August 28, 2007Assignee: Transitions Optical, Inc.Inventors: Carol L. Knox, Eric M. King, James P. Colton
-
Publication number: 20040096666Abstract: Describes an optical article, e.g., an ophthalmic photochromic article, such as a lens, in which the article includes: (1) a transparent substrate, such as a thermoset or thermoplastic plastic substrate, (2) a multiply laminate adjacent to at least one surface of the substrate, the laminate comprising (i) a transparent, thermoplastic polyurethane film, the thermoplastic, polyurethane film providing a desirable light filtering property, e.g., photochromism, and being juxtaposed to the surface of the substrate, the polyurethane being formed from a material comprising polyether-based polyurethane or polycarbonate-based polyurethane, and (ii) a transparent protective film of polymeric material, e.g., polycarbonate film, adjacent to the thermoplastic polyurethane film. Describes also the aforedescribed optical article having an abrasion-resistant coating affixed to the protective film, e.g.Type: ApplicationFiled: November 14, 2002Publication date: May 20, 2004Inventors: Carol L. Knox, William H. McDonald