Patents by Inventor Narayan K. Raman
Narayan K. Raman 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: 20180338495Abstract: An agricultural spray pre-mix composition, comprising from 0.01 wt % to 40 wt % of an agricultural spray adjuvant comprising a vinyl ester-based or vinyl acrylate-based polymer dispersion and greater than 15 wt % of a plasticizer and from 1 wt % to 50 wt % of a water conditioning agent.Type: ApplicationFiled: July 26, 2018Publication date: November 29, 2018Inventors: Narayan K. Raman, Hannah E. Toomey, Kristin Herrel, Tatiana Craft, James Martin, Erika Pedraza
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Publication number: 20180332846Abstract: An agricultural spray composition, comprising a vinyl ester-based polymer dispersion; a plasticizer; and an active ingredient.Type: ApplicationFiled: July 26, 2018Publication date: November 22, 2018Inventors: Narayan K. RAMAN, Hannah E. Toomey, Kristin Herrel
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Patent number: 10098344Abstract: An agricultural spray composition, comprising a vinyl ester-based polymer dispersion; a plasticizer; and an active ingredient.Type: GrantFiled: March 9, 2015Date of Patent: October 16, 2018Assignee: CELANESE INTERNATIONAL CORPORATIONInventors: Narayan K. Raman, Hannah E. Toomey, Kristin Herrel
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Patent number: 10092004Abstract: An agricultural spray pre-mix composition, comprising from 0.01 wt % to 40 wt % of an agricultural spray adjuvant comprising a vinyl ester-based or vinyl acrylate-based polymer dispersion and greater than 15 wt % of a plasticizer and from 1 wt % to 50 wt % of a water conditioning agent.Type: GrantFiled: September 22, 2016Date of Patent: October 9, 2018Assignee: CELANESE INTERNATIONAL CORPORATIONInventors: Narayan K. Raman, Hannah E. Toomey, Kristin Herrel, Tatiana Craft, James Martin, Erika Pedraza
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Publication number: 20170006859Abstract: An agricultural spray pre-mix composition, comprising from 0.01 wt % to 40 wt % of an agricultural spray adjuvant comprising a vinyl ester-based or vinyl acrylate-based polymer dispersion and greater than 15 wt % of a plasticizer and from 1 wt % to 50 wt % of a water conditioning agent.Type: ApplicationFiled: September 22, 2016Publication date: January 12, 2017Inventors: Narayan K. RAMAN, Hannah E. TOOMEY, Kristin HERREL
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Publication number: 20160262375Abstract: An agricultural spray composition, comprising a vinyl ester-based polymer dispersion; a plasticizer; and an active ingredient.Type: ApplicationFiled: March 9, 2015Publication date: September 15, 2016Inventors: Narayan K. RAMAN, Hannah E. Toomey, Kristin Herrel
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Patent number: 8900667Abstract: Disclosed are coating compositions that can be one-component, ambient curable, and waterborne. The coating compositions include a polymer that is the reaction product of a polycarbodiimide and a ketocarboxylic acid. Also disclosed are substrates coated with a coating deposited from such compositions, as well as methods for depositing a coating on a substrate, and coated substrates.Type: GrantFiled: December 18, 2009Date of Patent: December 2, 2014Assignee: PPG Industries Ohio, Inc.Inventors: Carol L. Boggs, Anthony M. Chasser, Kurt G. Olson, Narayan K. Raman, Irina G. Schwendeman, Shanti Swarup, Venkateshwarlu Kalsani
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Patent number: 8728617Abstract: Provided is a microporous material, e.g., a microporous sheet material, having a matrix of polyolefin, finely-divided, substantially water insoluble particulate filler, a network of interconnecting pores communicating throughout the microporous material, and at least one retrospectively identifiable taggant material embedded within the matrix, optionally the at least one taggant being unique to an end user for the microporous material, wherein the polyolefin is present in the microporous material in an amount of 20 to 35 weight percent, based on the weight of the microporous material. The taggant material provides a marker, signature or code that is capable of retrospective identification by machine, instrument or by the naked eye. Articles including the microporous material and processes for preparing the microporous material also are provided.Type: GrantFiled: December 17, 2010Date of Patent: May 20, 2014Assignee: PPG Industries Ohio, Inc.Inventors: Paul L. Benenati, James L. Boyer, Charles R. Coleman, Luciano M. Parrinello, Narayan K. Raman
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Publication number: 20120214928Abstract: Waterborne compositions comprising an aqueous dispersion comprising a latex are disclosed. Disclosed are latexes that are the reaction product of reactants that include a ureido-functional ethylenically unsaturated compound, an ethylenically unsaturated silicone, and another ethylenically unsaturated compound. Use of such composition to treat porous substrate is also disclosed.Type: ApplicationFiled: February 23, 2011Publication date: August 23, 2012Applicant: PPG IDUSTRIES OHIO, INC.Inventors: Narayan K. Raman, Robert T. Pogue, Melissa Lynn Billeck, Kaliappa Ragunathan
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Publication number: 20110151128Abstract: Disclosed are coating compositions that can be one-component, ambient curable, and waterborne. The coating compositions include a polymer that is the reaction product of a polycarbodiimide and a ketocarboxylic acid. Also disclosed are substrates coated with a coating deposited from such compositions, as well as methods for depositing a coating on a substrate, and coated substrates.Type: ApplicationFiled: December 18, 2009Publication date: June 23, 2011Applicant: PPG Industries Ohio, Inc.Inventors: Carol L. Boggs, Anthony M. Chasser, Kurt G. Olson, Narayan K. Raman, Irina G. Schwendeman, Shanti Swarup, Venkateshwarlu Kalsani
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Publication number: 20110127763Abstract: Provided is a microporous material, e.g., a microporous sheet material, having a matrix of polyolefin, finely-divided, substantially water insoluble particulate filler, a network of interconnecting pores communicating throughout the microporous material, and at least one retrospectively identifiable taggant material embedded within the matrix, optionally the at least one taggant being unique to an end user for the microporous material, wherein the polyolefin is present in the microporous material in an amount of 20 to 35 weight percent, based on the weight of the microporous material. The taggant material provides a marker, signature or code that is capable of retrospective identification by machine, instrument or by the naked eye. Articles including the microporous material and processes for preparing the microporous material also are provided.Type: ApplicationFiled: December 17, 2010Publication date: June 2, 2011Applicant: PPG INDUSTRIES OHIO, INC.Inventors: Paul L. Benenati, James L. Boyer, Charles R. Coleman, Luciano M. Parrinello, Narayan K. Raman
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Publication number: 20090311504Abstract: A microporous material is provided in the form of a singly extruded microporous sheet having opposing first and second surfaces, comprising: (a) a polymeric matrix component comprising: (i) 25 to 75 weight percent of low melt flow index polypropylene having a melt flow index ranging from 0.1 to 30 grams/10 minutes; (ii) 12.5 to 25 weight percent of ultrahigh molecular weight polyethylene; and (iii) 0 to 62.5 weight percent of high density polyethylene; (b) a finely divided, inorganic filler component dispersed throughout the polymeric matrix; and (c) a network of interconnecting pores communicating substantially throughout the microporous material, the pores constituting 10 to 80 percent by volume of the microporous material. The sheet typically has a thickness ranging from 3 to 8 mils and a stiffness of greater than 1 g/micron. In certain embodiments, the sheet has a density of greater than 0.75 g/cc. Also provided are multi-layer articles.Type: ApplicationFiled: July 5, 2009Publication date: December 17, 2009Inventors: James L. Boyer, Charles R. Coleman, Narayan K. Raman, Paul L. Benenati
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Publication number: 20090246487Abstract: Provided is a microporous material including (a) a polyolefin matrix which contains ultrahigh molecular weight polyolefin having a molecular weight greater than 7 million grams per mole and 30 to 80 weight percent high density polyolefin, (b) finely divided particulate filler having a density ranging from 2.21 to 3.21 grams per cubic centimeter distributed throughout the matrix, and (c) at least 35 percent by volume of a network of interconnecting pores communicating throughout the microporous material. The microporous material has a density ranging from 0.6 to 0.9 g/cc, a Sheffield smoothness of less than or equal to 40, and an air flow rate of 1000 or more Gurley seconds. Printed electronic devices prepared from and methods of making the microporous material also are provided.Type: ApplicationFiled: June 10, 2009Publication date: October 1, 2009Applicant: PPG INDUSTRIES OHIO, INC.Inventors: James L. Boyer, Luciano M. Parrinello, Paul L. Benenati, Narayan K. Raman, Pamela L. Campbell, Joseph P. Kovacs
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Patent number: 7569107Abstract: The present invention is related to treated filler and processes for producing said treated filler. Untreated filler slurry can be treated with a treating material and, optionally, a coupling material and then subjected to conventional drying method(s), to produce the treated filler of the invention. Treated filler has a wide variety of applications including but not limited to battery separators and rubber compositions such as tires.Type: GrantFiled: May 26, 2006Date of Patent: August 4, 2009Assignee: PPG Industries Ohio, Inc.Inventors: James L. Boyer, Charles R. Coleman, Timothy A. Okel, Narayan K. Raman
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Publication number: 20090155548Abstract: Provided is a microporous material including (a) a polyolefin matrix which is 30 to 80 weight percent high density polyolefin, (b) finely divided particulate filler distributed throughout the matrix including 10 to 30 weight percent or less of calcium carbonate, and (c) at least 35 percent by volume of a network of interconnecting pores communicating throughout the microporous material. The microporous material has a density ranging from 0.5 to 0.8 g/cc, a Sheffield smoothness of less than or equal to 40, a air flow rate of 1000 or more Gurley seconds, and MD stress at 1% strain of greater than or equal to 200 psi. Printed electronic devices prepared from the microporous material also are provided.Type: ApplicationFiled: December 12, 2008Publication date: June 18, 2009Applicant: PPG INDUSTRIES OHIO, INC.Inventors: James L. Boyer, Luciano M. Parrinello, Paul L. Benenati, Narayan K. Raman, Pamela L. Campbell, Joseph P. Kovacs
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Publication number: 20080286593Abstract: Provided is a multi-layer article including (1) a sheet of microporous material having opposing surfaces, and (2) an adhesive composition applied over at least a portion of at least one of the surfaces of the sheet. The microporous material contains (A) a polymeric matrix component of 5 to 100 weight percent of low melt flow index polypropylene; 0 to 90 weight percent of ultrahigh molecular weight polyethylene; and 0 to 90 weight percent of high density polyethylene; (B) a finely divided, particulate filler component dispersed throughout the polymeric matrix (A) including siliceous and non-siliceous materials; and (C) a network of interconnecting pores communicating substantially throughout the microporous material, the pores constituting 10 to 80 percent by volume of the microporous material, wherein the weight ratio of filler component (B) to polymeric matrix component (A) ranges from 0.1 to 10.0.Type: ApplicationFiled: July 29, 2008Publication date: November 20, 2008Applicant: PPG INDUSTRIES OHIO, INC.Inventors: James L. Boyer, Charles R. Coleman, Narayan K. Raman, Paul L. Benenati
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Publication number: 20080261011Abstract: Provided is a microporous material, e.g., a microporous sheet material, having a matrix of polyolefin, finely-divided, substantially water insoluble particulate filler, a network of interconnecting pores communicating throughout the microporous material, and at least one retrospectively identifiable taggant material embedded within the matrix, wherein the polyolefin is present in the microporous material in an amount of 20 to 60 weight percent, based on the weight of the microporous material. The taggant material provides a marker, signature or code that is capable of retrospective identification by machine, instrument or by the naked eye. Articles including the microporous material and processes for preparing the microporous material also are provided.Type: ApplicationFiled: September 14, 2007Publication date: October 23, 2008Applicant: PPG INDUSTRIES OHIO, INCInventors: Paul L. Benenati, James L. Boyer, Charles R. Coleman, Luciano M. Parrinello, Narayan K. Raman
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Publication number: 20080118738Abstract: Described are microporous materials including (a) a polymeric matrix component; (b) a finely divided, particulate inorganic filler component dispersed throughout the polymeric matrix; and (c) a network of interconnecting pores communicating substantially throughout the microporous material, the pores constituting 10 to 80 percent by volume of the microporous material. The polymeric component is based on (i) 5 to 100 weight percent based on total weight of component (a) of low melt flow index polypropylene; (ii) 0 to 90 weight percent based on total weight of component (a) of ultrahigh molecular weight polyethylene; and (iii) 0 to 90 weight percent based on total weight of component (a) of high density polyethylene. Also provided are multi-layer articles prepared from the microporous materials.Type: ApplicationFiled: November 17, 2006Publication date: May 22, 2008Inventors: James L. Boyer, Charles R. Coleman, Narayan K. Raman, Paul L. Benenati
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Patent number: 7135429Abstract: The present invention is directed to an attrition resistant carrier product such as silica. Further, this invention is directed to the use of a binder to improve the attrition resistance or reduce the friability of a carrier product such as silica. In an embodiment, the median particle size is from 125 to 300 microns. Selection of the binder is such that the presence and/or addition of the binder does not result in substantial modification of the physical properties of the silica. Suitable binders include Group I and Group II silicates, Group I and Group II aluminates, and mixtures thereof, as identified by the Period Table of Elements.Type: GrantFiled: May 24, 2002Date of Patent: November 14, 2006Assignee: PPG Industries Ohio, Inc.Inventors: Narayan K. Raman, Thomas G. Krivak, Robert C. Dilmore, Paul A. Beauregard
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Publication number: 20030219369Abstract: The present invention is directed to an attrition resistant carrier product such as silica. Further, this invention is directed to the use of a binder to improve the attrition resistance or reduce the friability of a carrier product such as silica. In an embodiment, the median particle size is from 125 to 300 microns. Selection of the binder is such that the presence and/or addition of the binder does not result in substantial modification of the physical properties of the silica. Suitable binders include Group I and Group II silicates, Group I and Group II aluminates, and mixtures thereof, as identified by the Period Table of Elements.Type: ApplicationFiled: May 24, 2002Publication date: November 27, 2003Inventors: Narayan K. Raman, Thomas G. Krivak, Robert C. Dilmore, Paul A. Beauregard