Patents by Inventor Venkatachalam Eswarakrishnan

Venkatachalam Eswarakrishnan 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).

  • Crosslinking compositions and coatings formed therefrom
    Patent number: 11827740
    Abstract: A crosslinking composition includes a compound having at least two functional groups that are each independently represented by Chemical Structure (I): X is an oxygen, sulfur, or nitrogen; R1 is an alkyl group, an aryl group, or an alkylaryl group; R2, R3, and R4 are each independently an alkyl group, an aryl group, an alkylaryl group, or a hydrogen; R5 is an alkyl group, an aryl group, an alkylaryl group, or a hydrogen; z is 0 when X is oxygen or sulfur and z is 1 when X is nitrogen; and when a double bond is formed between a carbon atom bonded to R3 and an adjacent nitrogen, m is 0, and when a single bond is formed between the carbon atom bonded to R3 and the adjacent nitrogen, m is 1.
    Type: Grant
    Filed: January 3, 2022
    Date of Patent: November 28, 2023
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Melissa Joan MacDonald, Qi Zheng, Abdulrahman Dawoud Ibrahim, Se Ryeon Lee, Tsukasa Mizuhara, Christophe René Gaston Grenier, Venkatachalam Eswarakrishnan
  • ELECTRODEPOSITABLE COATING COMPOSITIONS
    Publication number: 20230035603
    Abstract: The present invention is directed to an electrodepositable coating composition comprising an ionic salt group-containing film-forming polymer comprising active hydrogen functional groups; a blocked polyisocyanate curing agent comprising blocking groups, wherein at least 30% of the blocking groups comprise a 1,2-polyol as a blocking agent, based upon the total number of blocking groups; and a bismuth catalyst. Also disclosed are coatings, coated substrates, and methods of coating a substrate.
    Type: Application
    Filed: December 31, 2020
    Publication date: February 2, 2023
    Applicant: PPG Industries Ohio, Inc.
    Inventors: David A. Stone, Egle Puodziukynaite, Joseph R. Swanger, Venkatachalam Eswarakrishnan, Craig A. Wilson, Brian C. Okerberg, Hyun Wook Ro, Ross Anthony Moretti
  • Crosslinking Compositions and Coatings Formed Therefrom
    Publication number: 20220127411
    Abstract: A crosslinking composition includes a compound having at least two functional groups that are each independently represented by Chemical Structure (I): X is an oxygen, sulfur, or nitrogen; R1 is an alkyl group, an aryl group, or an alkylaryl group; R2, R3, and R4 are each independently an alkyl group, an aryl group, an alkylaryl group, or a hydrogen; R5 is an alkyl group, an aryl group, an alkylaryl group, or a hydrogen; z is 0 when X is oxygen or sulfur and z is 1 when X is nitrogen; and when a double bond is formed between a carbon atom bonded to R3 and an adjacent nitrogen, m is 0, and when a single bond is formed between the carbon atom bonded to R3 and the adjacent nitrogen, m is 1.
    Type: Application
    Filed: January 3, 2022
    Publication date: April 28, 2022
    Inventors: Melissa Joan MacDonald, Qi Zheng, Abdulrahman Dawoud Ibrahim, Se Ryeon Lee, Tsukasa Mizuhara, Christophe René Gaston Grenier, Venkatachalam Eswarakrishnan
  • Crosslinking compositions and coatings formed therefrom
    Patent number: 11242430
    Abstract: A crosslinking composition includes a compound having at least two functional groups that are each independently represented by Chemical Structure (I): X is an oxygen, sulfur, or nitrogen; R1 is an alkyl group, an aryl group, or an alkylaryl group; R2, R3, and R4 are each independently an alkyl group, an aryl group, an alkylaryl group, or a hydrogen; R5 is an alkyl group, an aryl group, an alkylaryl group, or a hydrogen; z is 0 when X is oxygen or sulfur and z is 1 when X is nitrogen; and when a double bond is formed between a carbon atom bonded to R3 and an adjacent nitrogen, m is 0, and when a single bond is formed between the carbon atom bonded to R3 and the adjacent nitrogen, m is 1.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: February 8, 2022
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Melissa Joan MacDonald, Qi Zheng, Abdulrahman Dawoud Ibrahim, Se Ryeon Lee, Tsukasa Mizuhara, Christophe René Gaston Grenier, Venkatachalam Eswarakrishnan
  • Crosslinking Compositions and Coatings Formed Therefrom
    Publication number: 20210115185
    Abstract: A crosslinking composition includes a compound having at least two functional groups that are each independently represented by Chemical Structure (I): X is an oxygen, sulfur, or nitrogen; R1 is an alkyl group, an aryl group, or an alkylaryl group; R2, R3, and R4 are each independently an alkyl group, an aryl group, an alkylaryl group, or a hydrogen; R5 is an alkyl group, an aryl group, an alkylaryl group, or a hydrogen; z is 0 when X is oxygen or sulfur and z is 1 when X is nitrogen; and when a double bond is formed between a carbon atom bonded to R3 and an adjacent nitrogen, m is 0, and when a single bond is formed between the carbon atom bonded to R3 and the adjacent nitrogen, m is 1.
    Type: Application
    Filed: October 17, 2019
    Publication date: April 22, 2021
    Inventors: Melissa Joan MacDonald, Qi Zheng, Abdulrahman Dawoud Ibrahim, Se Ryeon Lee, Tsukasa Mizuhara, Christophe René Gaston Grenier, Venkatachalam Eswarakrishnan
  • Electrodepositable coating composition having improved crater control
    Patent number: 10717883
    Abstract: The present invention is directed towards an electrodepositable coating composition comprising a polybutylene oxide polymer, an ionic film-forming polymer having functional groups, and a curing agent that is reactive with functional groups on the film-forming polymer. Also disclosed are methods of making the electrodepositable coating composition. Also disclosed are substrates treated with the electrodepositable coating composition.
    Type: Grant
    Filed: June 8, 2019
    Date of Patent: July 21, 2020
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Alan J. Kaylo, Venkatachalam Eswarakrishnan, Jo-Ann E. Bice, Craig A. Wilson, Alycia Lewand, Joseph R. Swanger
  • LOW-TEMPERATURE CURING COATING COMPOSITIONS
    Publication number: 20190359867
    Abstract: The present invention is directed towards a coating composition comprising a film-forming polymer comprising active hydrogen-containing functional groups; a blocked polyisocyanate curing agent comprising a blocking group derived from a blocking agent comprising an alpha-hydroxy amide, ester or thioester; and a curing catalyst that does not contain tin, lead, iron, zinc or manganese. Also disclosed are coatings, coated substrates, and methods of coating a substrate.
    Type: Application
    Filed: February 7, 2018
    Publication date: November 28, 2019
    Applicant: PPG INDUSTRIES OHIO, INC.
    Inventors: Venkatachalam Eswarakrishnan, Hongying Zhou, Michael G. Sandala, Carolyn A.K. Novak, Jo-Ann E. Bice, Christopher A. Dacko, Hyun Wook Ro, Richard F. Syput, Egle Puodziukynaite, Craig A. Wilson, Justin M. Jones, Herbert Tillman
  • ELECTRODEPOSITABLE COATING COMPOSITION HAVING IMPROVED CRATER CONTROL
    Publication number: 20190292385
    Abstract: The present invention is directed towards an electrodepositable coating composition comprising a polybutylene oxide polymer, an ionic film-forming polymer having functional groups, and a curing agent that is reactive with functional groups on the film-forming polymer. Also disclosed are methods of making the electrodepositable coating composition. Also disclosed are substrates treated with the electrodepositable coating composition.
    Type: Application
    Filed: June 8, 2019
    Publication date: September 26, 2019
    Applicant: PPG Industries Ohio, Inc.
    Inventors: Alan J. Kaylo, Venkatachalam Eswarakrishnan, Jo-Ann E. Bice, Craig A. Wilson, Chester J. Szymanski, Alycia Lewand, Joseph R. Swanger
  • Electrodepositable coating composition having improved crater control
    Patent number: 10421874
    Abstract: The present invention is directed towards an electrodepositable coating composition comprising a polyamine-dialdehyde adduct comprising a polymerization product of a polyamine and a dialdehyde. Also disclosed are methods of making the electrodepositable coating composition, methods of coating a substrate, and substrates treated with the electrodepositable coating composition.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: September 24, 2019
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Venkatachalam Eswarakrishnan, Alan J. Kaylo, Jo-Ann E. Bice, Craig A. Wilson, Chester J. Szymanski, Alycia Lewand, Joseph R. Swanger
  • Electrodepositable coating composition having improved crater control
    Patent number: 10329437
    Abstract: The present invention is directed towards an electrodepositable coating composition comprising a polybutylene oxide polymer, an ionic film-forming polymer having functional groups, and a curing agent that is reactive with functional groups on the film-forming polymer. Also disclosed are methods of making the electrodepositable coating composition. Also disclosed are substrates treated with the electrodepositable coating composition.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: June 25, 2019
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Alan J. Kaylo, Venkatachalam Eswarakrishnan, Jo-Ann E. Bice, Craig A. Wilson, Chester J. Szymanski, Alycia Lewand, Joseph R. Swanger
  • ELECTRODEPOSITABLE COATING COMPOSITION HAVING IMPROVED CRATER CONTROL
    Publication number: 20180002545
    Abstract: The present invention is directed towards an electrodepositable coating composition comprising a polyamine-dialdehyde adduct comprising a polymerization product of a polyamine and a dialdehyde. Also disclosed are methods of making the electrodepositable coating composition, methods of coating a substrate, and substrates treated with the electrodepositable coating composition.
    Type: Application
    Filed: June 29, 2017
    Publication date: January 4, 2018
    Inventors: Venkatachalam Eswarakrishnan, Alan J. Kaylo, Jo-Ann E. Bice, Craig A. Wilson, Chester J. Szymanski, Alycia Lewand, Joseph R. Swanger
  • ELECTRODEPOSITABLE COATING COMPOSITION HAVING IMPROVED CRATER CONTROL
    Publication number: 20180002542
    Abstract: The present invention is directed towards an electrodepositable coating composition comprising a polybutylene oxide polymer, an ionic film-forming polymer having functional groups, and a curing agent that is reactive with functional groups on the film-forming polymer. Also disclosed are methods of making the electrodepositable coating composition. Also disclosed are substrates treated with the electrodepositable coating composition.
    Type: Application
    Filed: June 29, 2017
    Publication date: January 4, 2018
    Inventors: Alan J. Kaylo, Venkatachalam Eswarakrishnan, Jo-Ann E. Bice, Craig A. Wilson, Chester J. Szymanski, Alycia Lewand, Joseph R. Swanger
  • Aqueous resinous dispersions that include a zinc (II) amidine complex and methods for the manufacture thereof
    Patent number: 9534074
    Abstract: Disclosed herein are stable aqueous resinous dispersions and methods for forming such dispersions that include a zinc (II) amidine complex.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: January 3, 2017
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Venkatachalam Eswarakrishnan, Andrea Gray, Jonathan A. Love, Kelly Moore, Michael Sandala
  • Electrodepositable coating composition containing a cyclic guanidine
    Patent number: 8884059
    Abstract: The present invention is directed towards an electrocoating composition comprising a cyclic guanidine.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: November 11, 2014
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Steven R. Zawacky, Thomas C. Moriarity, Donald W. Boyd, Geoffrey R. Webster, Joseph Lucas, Alan J. Kaylo, Chester J. Szymanski, Venkatachalam Eswarakrishnan
  • AQUEOUS RESINOUS DISPERSIONS THAT INCLUDE A ZINC (II) AMIDINE COMPLEX AND METHODS FOR THE MANUFACTURE THEREOF
    Publication number: 20130344231
    Abstract: Disclosed herein are stable aqueous resinous dispersions and methods for forming such dispersions that include a zinc (II) amidine complex.
    Type: Application
    Filed: June 25, 2012
    Publication date: December 26, 2013
    Applicant: PPG Industries Ohio, Inc.
    Inventors: Venkatachalam Eswarakrishnan, Andrea Gray, Jonathan A. Love, Kelly Moore, Michael Sandala
  • Method for producing bicyclic guanidines by use of a cyclic urea and a dehydrating agent
    Patent number: 8334380
    Abstract: The present invention is directed to a method for producing bicyclic guanidines comprising heating a reaction mixture comprising cyclic urea and a dehydrating agent to a temperature ?90° C.
    Type: Grant
    Filed: August 21, 2008
    Date of Patent: December 18, 2012
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Donald W. Boyd, Venkatachalam Eswarakrishnan, Charles R. Hickenboth, Richard F. Karabin, Gregory J. McCollum, Britt A. Minch, Thomas C. Moriarity, Steven R. Zawacky
  • Electrodepositable coating compositions and related methods
    Patent number: 8168700
    Abstract: Provided is an electrodepositable coating composition of a resinous phase dispersed in an aqueous medium, the resinous phase including (a) an active hydrogen-containing, cationic salt group-containing resin; and (b) an at least partially blocked polyisocyanate curing agent. The composition contains an organotin catalyst which is or is derived from a dialkyltin compound having the structure (I): [R1][R2]—Sn?O??(I) where R1 and R2 are the same or different, and each independently represents a monovalent hydrocarbon group wherein the sum of the carbon atoms in R1 and R2 is greater than 8. The catalyst is present in an amount sufficient to effect cure at a temperature at or below 340° F. (171.1° C.). Methods of preparing and using the composition also are provided.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: May 1, 2012
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Venkatachalam Eswarakrishnan, Alan J. Kaylo, Gregory J. McCollum, Ellor James Van Buskirk
  • ELECTRODEPOSITABLE COATING COMPOSITION CONTAINING A CYCLIC GUANIDINE
    Publication number: 20110005937
    Abstract: The present invention is directed towards an electrocoating composition comprising a cyclic guanidine.
    Type: Application
    Filed: September 17, 2010
    Publication date: January 13, 2011
    Inventors: Steven R. Zawacky, Thomas C. Moriarity, Donald W. Boyd, Geoffrey R. Webster, Joseph Lucas, Alan J. Kaylo, Chester J. Szymanski, Venkatachalam Eswarakrishnan
  • Electrodepositable coating composition containing a cyclic guanidine
    Patent number: 7842762
    Abstract: The present invention is directed towards an electrocoating composition comprising a cyclic guanidine.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: November 30, 2010
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Steven R. Zawacky, Thomas C. Moriarity, Donald W. Boyd, Geoffrey R. Webster, Joseph Lucas, Alan J. Kaylo, Chester J. Szymanski, Venkatachalam Eswarakrishnan
  • Reaction product of polyamine, acyclic carbonate and cyclic carbonate
    Patent number: 7670500
    Abstract: The present invention provides a film-forming composition. The composition includes a reaction product of: a) a polyamine containing a primary amino group and a secondary amino group; and b) an acyclic carbonate. Also provided is a method of preparing a film-forming composition and an article coated with such compositions.
    Type: Grant
    Filed: October 20, 2008
    Date of Patent: March 2, 2010
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Venkatachalam Eswarakrishnan, Gregory J. McCollum, Matthew Scott, Geoffrey R. Webster, Jr., Judith A. Orzechowski, Kevin J. Dufford, David Robert Fenn, Alan J. Kaylo, Thomas C. Moriarity