Carol L Knox

Author:

Carol Knox

ISBN #:

0883341328

US Patent:

6531076, Mar 11, 2003

Filed:

Jan 19, 2001

Appl. No.:

09/766554

Inventors:

John C. Crano - late of Murrysville PA
Carol L. Knox - Monroeville PA
Michael O. Okoroafor - Export PA
Robert A. Smith - Murrysville PA
Rifat Tabakovic - Troy MI

Assignee:

PPG Industries Ohio, Inc. - Cleveland OH

International Classification:

G02B 523

US Classification:

252586, 528 61, 528 62, 528 64, 4284231, 4284233, 4284235, 4284242, 351163

Abstract:

Described are photochromic organic resin compositions and the impact resistant polymerizates and coating compositions made therefrom. The organic resin composition comprises the reaction product of at least one polyol having greater than 1. 0 hydroxyl groups; at least one polyisocyanate having greater than 1. 0 isocyanato groups; and at least one polyamine curing agent having greater than 1. 0 amino groups. The polymerizates are made photochromic either by the addition of organic photochromic compounds to the reactants used to form the polymerizate or by methods that imbibe or transfer the photochromic compounds into the polymerizate. Optically clear photochromic and impact resistant articles such as ophthalmic lenses and articles having photochromic coatings prepared from the photochromic organic resin compositions are also described.

US Patent:

7465414, Dec 16, 2008

Filed:

Nov 14, 2002

Appl. No.:

10/294058

Inventors:

Carol L. Knox - Monroeville PA, US
William H. McDonald - West Mars, Butler County PA, US

Assignee:

Transitions Optical, Inc. - Pinellas Park FL

International Classification:

G08B 5/23
G02F 1/01
B32B 27/18

US Classification:

252586, 359238, 4284233, 4284244, 4284246, 428412

Abstract:

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.

US Patent:

7465415, Dec 16, 2008

Filed:

Jul 30, 2004

Appl. No.:

10/903770

Inventors:

Feng Wang - Export PA, US
Barry Van Gemert - Murrysville PA, US
Kevin J. Stewart - Murrysville PA, US
Carol L. Knox - Monroeville PA, US
Anu Chopra - Pittsburgh PA, US
Patrick M. Brown - Moon Township PA, US

Assignee:

PPG Industries Ohio, Inc. - Cleveland OH

International Classification:

C09K 9/02
C08G 63/08
C08G 63/58
C08G 77/60
C08F 24/00

US Classification:

252586, 252583, 525415, 526269, 528 35, 528365

Abstract:

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:.

US Patent:

7907346, Mar 15, 2011

Filed:

Mar 16, 2007

Appl. No.:

11/687053

Inventors:

Shanti Swarup - Allison Park PA, US
Carol L. Knox - Monroeville PA, US
Feng Wang - Export PA, US

Assignee:

Transitions Optical, Inc. - Pinellas Park FL

International Classification:

G02B 3/00
C09K 19/12

US Classification:

359642, 428482, 430541, 430559

Abstract:

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.

US Patent:

8435631, May 7, 2013

Filed:

Apr 15, 2010

Appl. No.:

12/761020

Inventors:

James L. Boyer - Monroeville PA, US
Christine Gardenr - Irwin PA, US
Carol L. Knox - Monroeville PA, US
Luciano M. Parrinello - Allison Park PA, US
Robert Swisher - Pittsburgh PA, US

Assignee:

PPG Industries Ohio, Inc. - Cleveland OH

International Classification:

B32B 27/08
A61L 9/04

US Classification:

4283193, 4283179, 4283155, 4283197, 239 53, 239 58

Abstract:

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/cm; 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*cm). 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.

US Patent:

7261843, Aug 28, 2007

Filed:

Mar 4, 2004

Appl. No.:

10/793582

Inventors:

Carol L. Knox - Monroeville PA, US
Eric M. King - Pittsburgh PA, US
James P. Colton - Trafford PA, US

Assignee:

Transitions Optical, Inc. - Pinellas Park FL

International Classification:

G02B 5/23
G02F 1/01
B32B 27/18

US Classification:

252586, 359238, 359642, 428412

Abstract:

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. , an abrasion-resistant coating comprising an organo silane; and a photochromic article having an antireflective coating affixed to the abrasion-resistant coating.

US Patent:

20050168689, Aug 4, 2005

Filed:

Dec 17, 2004

Appl. No.:

11/016573

Inventors:

Carol Knox - Monroeville PA, US

International Classification:

G02C007/02
G02C007/10

US Classification:

351163000, 351166000, 351177000

Abstract:

Described are optical elements made of a substrate having connected thereto an at least partial film of photochromic adhesive and an at least partial film of a polymeric organic material. Also described are optical elements made of a substrate having connected thereto an at least partial superstrate of a photochromic composite of a film of a first polymeric organic material and a film of a second polymeric organic material having an at least partial film of a photochromic adhesive placed between the films of first and second polymeric organic materials. Methods to prepare the optical elements are also described.

US Patent:

20050196626, Sep 8, 2005

Filed:

Mar 4, 2004

Appl. No.:

10/793518

Inventors:

Carol Knox - Monroeville PA, US
James Claar - Apollo PA, US
David Walters - Slippery Rock PA, US
Stephen Thomas - Aspinwall PA, US

International Classification:

B32B025/20

US Classification:

428447000

Abstract:

Describes a photochromic article, e.g., an ophthalmic photochromic article, such as a plastic lens, in which the article includes (1) a rigid substrate, such as a transparent thermoset or thermoplastic polymeric 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 photochromic material, e.g., spirooxazine, naphthopyran and/or fulgide, and (3) a layer chosen from a second organic polymeric coating or an abrasion resistant coating that is superposed on said photochromic polymeric coating. Describes incorporating at least one polysiloxane surface active agent within the photochromic polymeric coating in amounts sufficient to inhibit migration of the photochromic material, e.g., into said layer superposed on said photochromic polymeric coating. Describes also the aforedescribed photochromic article having an abrasion-resistant coating affixed to the second organic polymeric coating, e.g., an abrasion-resistant coating comprising an organo silane; and a photochromic article having an antireflective coating affixed to the abrasion-resistant coating.