Patents by Inventor Michael O. Okoroafor
Michael O. Okoroafor 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: 20100048852Abstract: The present invention relates to a sulfur-containing polyureaurethane and a method of preparing the polyureaurethane. The sulfur-containing polyureaurethane has a refractive index of at least 1.57, an Abbe number of at least 32 and a density of less than 1.3 grams/cm3 when cured. The sulfur-containing polyureaurethane is prepared by the reaction of: (a) a sulfur-containing, isocyanate functional polyurethane prepolymer derived from: (i) a polyisocyanate; and (ii) a polythiol oligomer produced by the reaction of at least two or more different dienes with one or more dithiols and in certain embodiments at least one trifunctional or higher-functional polythiol; and (b) an amine-containing curing agent.Type: ApplicationFiled: November 2, 2009Publication date: February 25, 2010Applicant: PPG INDUSTRIES OHIO, INC.Inventors: Nina V. Bojkova, Robert A. Smith, Robert D. Herold, Chandra B. Rao, William H. McDonald, Vidhu J. Nagpal, Marvin J. Graham, Phillip C. Yu, Suresh G. Sawant, Michael O. Okoroafor
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Publication number: 20090036639Abstract: Methods are provided for making a polylactic acid article. The methods may include the steps of providing an article comprising polylactic acid; supporting the article using a carrier support system; and curing the article with heat. The step of curing the article is effective to improve one or more properties of the article. Articles comprising polylactic acid also are provided having improved properties. Methods also are provided for preparing a beverage including the steps of providing a pod comprising polylactic acid, wherein the pod has been cured with heat while being supported by a carrier support system; placing a beverage material in the pod; placing a hot liquid into the pod; brewing the beverage material and hot liquid in the pod to create a beverage; and removing the beverage from the pod.Type: ApplicationFiled: July 29, 2008Publication date: February 5, 2009Applicant: The Coca-Cola CompanyInventors: Qiuchen Peter Zhang, Michael O. Okoroafor, Xiaoyan Huang, Stuart Michael Ruan Jones, Philip Andrew Dent, Claire Louise Gould
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Patent number: 7473754Abstract: The present invention is directed to a novel polymerizable organic composition comprising one or more radically polymerizable monomers with at least one radically polymerizable monomer having at least two (meth)acryloyl groups that have backbone linkages selected from thiourethane linkages, dithiourethane linkages, combinations of thiourethane linkages and dithiourethane linkages. The present invention is also directed to polymerizates prepared from the polymerizable organic composition, shaped articles prepared from the polymerizable compositions, and photochromic articles that may be prepared from the polymerizable organic composition of the present invention.Type: GrantFiled: October 17, 2000Date of Patent: January 6, 2009Assignee: PPG Industries Ohio, Inc.Inventors: Michael O. Okoroafor, Robert A. Smith, Marvin J. Graham, Robert D. Herold
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Patent number: 7098290Abstract: The present invention is directed to a novel method of preparing a polymerizate, which includes the step of polymerizing a two-component composition, which includes: a first component containing at least one polycyanate reactant having at least two functional groups selected from isocyanate, isothiocyanate and combinations thereof, the polycyanate reactant being the reaction product of: a polythiol monomer having at least two thiol groups; and a polycyanate monomer having at least two functional groups selected from isocyanate, isothiocyanate and combinations thereof; and a second component containing at least one polyamine reactant having at least two functional groups selected from primary amine, secondary amine and combinations thereof. The molar equivalent ratio of (NCO+NCS) groups from the first component to (—NH2+—NH—) groups from the second component is from 0.5 to 100. The present invention is also directed to polymerizates prepared according to the method of the present invention.Type: GrantFiled: October 25, 2000Date of Patent: August 29, 2006Assignee: PPG Industries Ohio, Inc.Inventors: Michael O. Okoroafor, Robert A. Smith, Rifat Tabakovic, Marvin J. Graham, Robert D. Herold
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Patent number: 7087698Abstract: The present invention is directed to a novel method of preparing a polymerizate, which includes the step of polymerizing a two-component composition, which includes: a first component containing at least one polycyanate reactant having at least two functional groups selected from isocyanate, isothiocyanate and combinations thereof, the polycyanate reactant being the reaction product of: a polythiol monomer having at least two thiol groups; and a polycyanate monomer having at least two functional groups selected from isocyanate, isothiocyanate and combinations thereof; and a second component containing at least one polyamine reactant having at least two functional groups selected from primary amine, secondary amine and combinations thereof. The present invention is also directed to polymerizates prepared according to the method of the present invention. The present invention is further directed to photochromic articles that may be prepared from the polymerizates of the present invention.Type: GrantFiled: October 25, 2000Date of Patent: August 8, 2006Assignee: PPG Industries Ohio, Inc.Inventors: Michael O. Okoroafor, Robert A. Smith
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Publication number: 20040138401Abstract: The present invention relates to a sulfur-containing polyureaurethane and a method of preparing said polyureaurethane. In an embodiment, the sulfur-containing polyureaurethane adapted to have a refractive index of at least 1.57, an Abbe number of at least 32 and a density of less than 1.3 grams/cm3, when at least partially cured.Type: ApplicationFiled: December 2, 2003Publication date: July 15, 2004Inventors: Nina Bojkova, Robert A. Smith, Robert D. Herold, Chandra Rao, William H. McDonald, Vidhu J. Nagpal, Marvin J. Graham, Phillip C. Yu, Suresh Sawant, Michael O. Okoroafor
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Patent number: 6733887Abstract: Described is an article of a non-elastomeric poly(urea-urethane) substrate having free isocyanato surface groups and at least a partial coating of a photochromic polymeric coating on at least one surface of the substrate.Type: GrantFiled: August 30, 2002Date of Patent: May 11, 2004Assignee: PPG Industries Ohio, Inc.Inventors: Michael O. Okoroafor, Robert A. Smith
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Patent number: 6669873Abstract: Described is a polymerizable organic composition comprising: (a) a radically polymerizable gel-free prepolymer of (i) at least one first polymerizable monomer having at least two radically polymerizable ethylenically unsaturated groups, e.g., divinyl benzene, and (ii) at least one first polythiol monomer having at least two thiol groups, e.g., thioglycerol bis(mercaptoacetate); and (b) at least one second polymerizable monomer having at least two radically polymerizable ethylenically unsaturated groups, e.g., divinyl benzene and/or methacrylic anhydride, the first and second radically polymerizable monomers each being substantially free of norbornene groups. The molar equivalent ratio of ethylenically unsaturated groups of (a)(i) to the thiol groups of (a)(ii) is no greater than 1:1. The described polymerizable composition has reduced shrinkage, and a polymerizate prepared therefrom has a refractive index of at least 1.57 and an Abbe number of at least 33.Type: GrantFiled: March 14, 2000Date of Patent: December 30, 2003Assignee: PPC Industries Ohio, Inc.Inventors: Robert A. Smith, Robert D. Herold, Michael O. Okoroafor
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Patent number: 6631021Abstract: Describes novel polyfunctional thiiranes. Also described are polymerizable compositions comprising such novel polyfunctional thiiranes, and polymerizates, e.g., optical lenses, prepared therefrom. The described polymerizates may have a refractive index of at least 1.6, and an Abbe number of at least 27.Type: GrantFiled: February 28, 2001Date of Patent: October 7, 2003Assignee: PPG Industries Ohio, Inc.Inventors: Robert A. Smith, Michael O. Okoroafor, Marvin J. Graham
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Publication number: 20030149217Abstract: The present invention relates to a sulfur-containing polyureaurethane and a method of preparing said polyureaurethane. In an embodiment, the sulfur-containing polyureaurethane when at least partially cured can have a refractive index of at least 1.57, an Abbe number of at least 35 and a density of less than 1.3 grams/cm3. Further, the sulfur-containing polyureaurethane can be prepared by reacting a polyureaurethane prepolymer comprising a polycyanate and at least one hydrogen-containing material, at least one episulfide-containing material; and an amine-containing curing agent.Type: ApplicationFiled: November 5, 2002Publication date: August 7, 2003Inventors: Nina V. Bojkova, Vidhu J. Nagpal, Robert A. Smith, Marvin J. Graham, Michael O. Okoroafor
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Patent number: 6531076Abstract: 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.Type: GrantFiled: January 19, 2001Date of Patent: March 11, 2003Assignee: PPG Industries Ohio, Inc.Inventors: John C. Crano, Carol L. Knox, Michael O. Okoroafor, Robert A. Smith, Rifat Tabakovic
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Publication number: 20030044620Abstract: Described is an article of a non-elastomeric poly(urea-urethane) substrate having free isocyanato surface groups and at least a partial coating of a photochromic polymeric coating on at least one surface of the substrate.Type: ApplicationFiled: August 30, 2002Publication date: March 6, 2003Inventors: Michael O. Okoroafor, Robert A. Smith
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Patent number: 6436541Abstract: This invention relates to a two layers or more anti-static film coating deposited on a substrate. Selected layers of the films may have anti-static and/or electromagnetic properties. In one embodiment, the film farthest from the substrate has an index of refraction lower than the underlying film. In another embodiment, the surface of the film is roughened to provide a graded index of refraction.Type: GrantFiled: April 7, 1999Date of Patent: August 20, 2002Assignee: PPG Industries Ohio, Inc.Inventors: John F. Sopko, Michael O. Okoroafor, Huawen Li, George A. Neuman
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Patent number: 6342571Abstract: Polymerizable compositions comprising: (a) a mixture of thio(meth)acrylate functional monomers comprising, (a)(i) a first thio(meth)acrylate functional monomer, e.g., bis(thiomethacrylate)-1,2-ethylene, and (a)(ii) a second thio(meth)acrylate functional monomer, which is chain extended; (b) an aromatic monomer having at least two vinyl groups, e.g., divinyl benzene; (c) a polythiol monomer having at least two thiol groups, e.g., pentaerythritol tetrakis(3-mercaptopropionate); and (d) a comonomer selected from, (d)(i) an anhydride monomer having at least one ethylenically unsaturated group, e.g., methacrylic anhydride; (d) (ii) a monomer having at least three (meth)acryloyl groups, e.g., pentaerythritol tetrakis(acrylate); and (d)(iii) mixtures of monomers (d)(i) and (d)(ii). A polymerizate of the polymerizable composition has a refractive index of at least 1.57 and an Abbe number of at least 33.Type: GrantFiled: August 20, 1999Date of Patent: January 29, 2002Assignee: PPG Industries Ohio, Inc.Inventors: Robert A. Smith, Michael O. Okoroafor, Robert D. Herold, T. Edwin Freeman
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Publication number: 20020010313Abstract: Describes novel polyfunctional thiiranes. Also described are polymerizable compositions comprising such novel polyfunctional thiiranes, and polymerizates, e.g., optical lenses, prepared therefrom. The described polymerizates may have a refractive index of at least 1.6, and an Abbe number of at least 27.Type: ApplicationFiled: February 28, 2001Publication date: January 24, 2002Inventors: Robert A. Smith, Michael O. Okoroafor, Marvin J. Graham
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Publication number: 20010050356Abstract: 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.Type: ApplicationFiled: January 19, 2001Publication date: December 13, 2001Inventors: John C. Crano, Nicholas J. Crano, Carol A. Knox, Michael O. Okoroafor, Robert A. Smith, Rifat Tabakovic
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Patent number: D986730Type: GrantFiled: September 24, 2020Date of Patent: May 23, 2023Assignee: MCCORMICK & COMPANY, INC.Inventors: Michael O. Okoroafor, Erik Holm, Peter Brian Clarke, James E. McCay, Sean Evelich, Corey James Marchetti
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Patent number: D995287Type: GrantFiled: September 24, 2020Date of Patent: August 15, 2023Assignee: MCCORMICK & COMPANY, INC.Inventors: Michael O. Okoroafor, Erik Holm, Peter Brian Clarke, James E. McCay, Sean Evelich, Corey James Marchetti
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Patent number: D995288Type: GrantFiled: September 24, 2020Date of Patent: August 15, 2023Assignee: MCCORMICK & COMPANY, INC.Inventors: Michael O. Okoroafor, Erik Holm, Peter Brian Clarke, James E. McCay, Sean Evelich, Corey James Marchetti
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Patent number: D1003708Type: GrantFiled: September 24, 2020Date of Patent: November 7, 2023Assignee: MCCORMICK & COMPANY, INC.Inventors: Michael O. Okoroafor, Erik Holm, Peter Brian Clarke, James E. McCay, Sean Evelich, Corey James Marchetti