Patents by Inventor Ravi Mukkamala

Ravi Mukkamala 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: 9598557
    Abstract: The present invention provides a new and simple processed stable colloidal silica containing polymeric binders, without modification, and to get to a novel coating composition, especially, aqueous coating composition that has more efficient stain resistance/removal function and also under a reasonable and controllable cost.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: March 21, 2017
    Assignee: Rohm and Haas Company
    Inventors: Yujiang Wang, Jianming Xu, Ravi Mukkamala
  • Publication number: 20140256871
    Abstract: The present invention provides a new and simple processed stable colloidal silica containing polymeric binders, without modification, and to get to a novel coating composition, especially, aqueous coating composition that has more efficient stain resistance/removal function and also under a reasonable and controllable cost.
    Type: Application
    Filed: October 21, 2011
    Publication date: September 11, 2014
    Inventors: Yujiang Wang, Jianming Xu, Ravi Mukkamala
  • Patent number: 8476190
    Abstract: In the present invention a composite particle including: a first polymeric particle having a diameter of from 100 nm to 3.5 microns including a core and a shell: the core including, when dry, at least one void; and the shell polymer having a calculated glass transition temperature (“Tg”) greater than 50° C.; and a second polymeric particle disposed on the surface of the first polymeric particle, the second polymeric particle having a minimum film-forming temperature of greater than 20° C.; wherein the ratio of the diameter of the first polymeric particle to the diameter of the second polymeric particle is from 1 to 50; and wherein the ratio of the weight of the first polymeric particle to the weight of the second polymeric particle is from 0.1 to 40, is provided.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: July 2, 2013
    Assignee: Rohm and Haas Company
    Inventors: Ravi Mukkamala, Chao-Jen Chung
  • Publication number: 20120277098
    Abstract: In the present invention a composite particle including: a first polymeric particle having a diameter of from 100 nm to 3.5 microns including a core and a shell: the core including, when dry, at least one void; and the shell polymer having a calculated glass transition temperature (“Tg”) greater than 50° C.; and a second polymeric particle disposed on the surface of the first polymeric particle, the second polymeric particle having a minimum film-forming temperature of greater than 20° C.; wherein the ratio of the diameter of the first polymeric particle to the diameter of the second polymeric particle is from 1 to 50; and wherein the ratio of the weight of the first polymeric particle to the weight of the second polymeric particle is from 0.1 to 40, is provided.
    Type: Application
    Filed: April 10, 2012
    Publication date: November 1, 2012
    Inventors: Ravi MUKKAMALA, Chao-Jen CHUNG
  • Patent number: 8247027
    Abstract: In the present invention a composite particle including: a first polymeric particle having a diameter of from 100 nm to 3.5 microns including a core and a shell: the core including, when dry, at least one void; and the shell polymer having a calculated glass transition temperature(“Tg”) greater than 50° C.; and a second polymeric particle disposed on the surface of the first polymeric particle, the second polymeric particle having a minimum film-forming temperature of greater than 20° C.; wherein the ratio of the diameter of the first polymeric particle to the diameter of the second polymeric particle is from 1 to 50; and wherein the ratio of the weight of the first polymeric particle to the weight of the second polymeric particle is from 0.1 to 40, is provided.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: August 21, 2012
    Assignee: Rohm and Haas Company
    Inventors: Ravi Mukkamala, Chao-Jen Chung
  • Patent number: 8236431
    Abstract: A coating for paperboard comprises an aqueous dispersion of a hollow core binder comprising a first polymer that, when dry, has at least one void, the first polymer being substantially encapsulated by at least one second polymer having a glass transition temperature (Tg) ranging from more than ?15° C. and up to and including 30° C., wherein the weight ratio of the said second polymer to the said first polymer ranges from 1:1 to 4:1. One or both of the first polymer and the second polymer may be formed from, as polymerized units, at least one ethylenically unsaturated monomer. The hollow core binder allows for glossy, bright and smooth paperboard coatings while reducing the amount of binder and opacifying pigment necessary to achieve such coating properties. The present invention also provides coated paperboard articles, as well as paper and paperboard that is made from a mixture of pulp with the inventive hollow core binder.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: August 7, 2012
    Assignee: Rohm and Haas Company
    Inventor: Ravi Mukkamala
  • Patent number: 8043476
    Abstract: A paper or paper board coated with an aqueous paper coating composition containing pigment having a phosphorous-containing emulsion polymer and a phosphorous-containing dispersant.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: October 25, 2011
    Assignee: Rohm and Haas Company
    Inventors: John Robert Haigh, Ravi Mukkamala
  • Publication number: 20100087315
    Abstract: In the present invention a composite particle including: a first polymeric particle having a diameter of from 100 nm to 3.5 microns including a core and a shell: the core including, when dry, at least one void; and the shell polymer having a calculated glass transition temperature(“Tg”) greater than 50° C.; and a second polymeric particle disposed on the surface of the first polymeric particle, the second polymeric particle having a minimum film-forming temperature of greater than 20° C.; wherein the ratio of the diameter of the first polymeric particle to the diameter of the second polymeric particle is from 1 to 50; and wherein the ratio of the weight of the first polymeric particle to the weight of the second polymeric particle is from 0.1 to 40, is provided.
    Type: Application
    Filed: September 25, 2009
    Publication date: April 8, 2010
    Inventors: Ravi Mukkamala, Chao-Jen Chung
  • Publication number: 20080115900
    Abstract: A paper or paper board coated with an aqueous paper coating composition containing pigment having a phosphorous-containing emulsion polymer and a phosphorous-containing dispersant.
    Type: Application
    Filed: October 29, 2007
    Publication date: May 22, 2008
    Inventors: John Robert Haigh, Ravi Mukkamala
  • Publication number: 20080081175
    Abstract: A coating for paperboard comprises an aqueous dispersion of a hollow core binder comprising a first polymer that, when dry, has at least one void, the first polymer being substantially encapsulated by at least one second polymer having a glass transition temperature (Tg) ranging from more than ?15° C. and up to and including 30° C., wherein the weight ratio of the said second polymer to the said first polymer ranges from 1:1 to 4:1. One or both of the first polymer and the second polymer may be formed from, as polymerized units, at least one ethylenically unsaturated monomer. The hollow core binder allows for glossy, bright and smooth paperboard coatings while reducing the amount of binder and opacifying pigment necessary to achieve such coating properties. The present invention also provides coated paperboard articles, as well as paper and paperboard that is made from a mixture of pulp with the inventive hollow core binder.
    Type: Application
    Filed: September 17, 2007
    Publication date: April 3, 2008
    Inventor: Ravi Mukkamala
  • Publication number: 20060042768
    Abstract: The present invention relates to a coated paper product and the method for producing the same. High levels of an organic pigment, an inorganic pigment, relatively high levels of a binder, as well as, water are combined to form a coating composition which is applied to a low weight paper web. Then, the coated paper web is dried and calendered at relatively low calender intensity. A high bulk low weight or ultra-low weight coated paper product results which exhibits optical and printing properties comparable to its heavier counterparts.
    Type: Application
    Filed: August 17, 2005
    Publication date: March 2, 2006
    Inventors: James Brown, Ravi Mukkamala