Patents by Inventor Subbareddy Kanagasabapathy

Subbareddy Kanagasabapathy 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: 8679999
    Abstract: Titanosilicate catalyst is used in the oxidation reactions such as allylchloride epoxidation, phenol hydroxylation, Cyclohexanone ammoximation. During the reaction the catalyst is deactivated which further decrease in the efficiency of the oxidation reactions. The present invention provides a method for an efficient regeneration of catalyst titanosilicate catalyst at low temperature below 100° C. using a gaseous mixture containing ozone, without isolating the catalyst from the reactor system.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: March 25, 2014
    Assignee: Aditya Birla Science & Technology Co. Ltd.
    Inventors: Subbareddy Kanagasabapathy, Yogesh Laxman Borle, Bir Kapoor, Arati Verma
  • Patent number: 8338351
    Abstract: A coating composition and process for generating transparent, near-transparent, and semi-transparent super-hydrophobic coatings on surfaces having a contact angle of greater than 165 degrees. The composition comprises hydrophobic nanoparticles of silsesquioxanes containing adhesion promoter groups and low surface energy groups.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: December 25, 2012
    Assignee: Ashland Licensing and Intellectual Property, LLC
    Inventors: Subbareddy Kanagasabapathy, Richard J. Baumgart, Wen-Chen Su, Frances E. Lockwood, Vinod Kanniah
  • Patent number: 8258206
    Abstract: A hydrophobic coating has been made for use on interior pipe surfaces, exterior boat surfaces, and in many other applications, to reduce drag in fluid flow, thus providing an energy savings. The coating utilizes a blend of organic and/or inorganic polymers with hydrophobic nanoparticles of fumed silica and/or titania in a solvent. The coating solves the problem of poor resistance to UV light and/or abrasion found in previous coatings of similar nature. The coating of the present invention can be made to be translucent and nearly transparent whereas previous coatings of comparable hydrophobicity have all been white or opaque. The coating can be applied in a single application by an easy spraying method and the super hydrophobic property can be achieved by drying the film at room temperature for 5 to 10 minutes. A preferred coating has good resistance to UV light and some resistance to abrasion.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: September 4, 2012
    Assignee: Ashland Licensing and Intellectual Property, LLC
    Inventors: Subbareddy Kanagasabapathy, Richard J. Baumgart, Wen-Chen Su, Frances E. Lockwood
  • Publication number: 20120142814
    Abstract: A hydrophobic coating has been made for use on interior pipe surfaces, exterior boat surfaces, and in many other applications, to reduce drag in fluid flow, thus providing an energy savings. The coating utilizes a blend of organic and/or inorganic polymers with hydrophobic nanoparticles of fumed silica and/or titania in a solvent. The coating solves the problem of poor resistance to UV light and/or abrasion found in previous coatings of similar nature. The coating of the present invention can be made to be translucent and nearly transparent whereas previous coatings of comparable hydrophobicity have all been white or opaque. The coating can be applied in a single application by an easy spraying method and the super hydrophobic property can be achieved by drying the film at room temperature for 5 to 10 minutes. A preferred coating has good resistance to UV light and some resistance to abrasion.
    Type: Application
    Filed: April 13, 2007
    Publication date: June 7, 2012
    Inventors: Subbareddy Kanagasabapathy, Richard J. Baumgart, Wen-Chen Su, Frances E. Lockwood
  • Patent number: 8147607
    Abstract: Coating compositions of the present invention comprise hydrophobic particles, an alcohol, a solvent, and an effective amount of water such that coatings formed therefrom are hydrophobic. The hydrophobic particles may comprise a metal oxide, such as silica (SiO2), alumina (Al2O3), titania (TiO2), or zinc oxide (ZnO), or combinations thereof. In one embodiment, the hydrophobic particles comprise fumed silica. The amount of hydrophobic particles is in the range of from about 0.3 wt. % to about 2 wt. %. In one embodiment, the effective amount of water is at least about 0.066 wt. %. The ratio of the amount of the solvent to the amount of the alcohol is slightly less than 100, and, in another embodiment, is at least about 50 to 50. A surface treated with the composition is characterized by a water contact angle of 115° or more, and more particularly 135° or more.
    Type: Grant
    Filed: October 26, 2009
    Date of Patent: April 3, 2012
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventors: Richard J. Baumgart, Subbareddy Kanagasabapathy
  • Publication number: 20110177252
    Abstract: A coating composition and process for generating transparent, near-transparent, and semi-transparent super-hydrophobic coatings on surfaces having a contact angle of greater than 165 degrees. The composition comprises hydrophobic nanoparticles of silsesquioxanes containing adhesion promoter groups and low surface energy groups.
    Type: Application
    Filed: March 29, 2011
    Publication date: July 21, 2011
    Applicant: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC
    Inventors: Subbareddy Kanagasabapathy, Richard J. Baumgart, Wen-Chen Su, Frances E. Lockwood, Vinod Kanniah
  • Publication number: 20110094417
    Abstract: Coating compositions of the present invention comprise hydrophobic particles, an alcohol, a solvent, and an effective amount of water such that coatings formed therefrom are hydrophobic. The hydrophobic particles may comprise a metal oxide, such as silica (SiO2), alumina (Al2O3), titania (TiO2), or zinc oxide (ZnO), or combinations thereof. In one embodiment, the hydrophobic particles comprise fumed silica. The amount of hydrophobic particles is in the range of from about 0.3 wt. % to about 2 wt. %. In one embodiment, the effective amount of water is at least about 0.066 wt. %. The ratio of the amount of the solvent to the amount of the alcohol is slightly less than 100, and, in another embodiment, is at least about 50 to 50. A surface treated with the composition is characterized by a water contact angle of 115° or more, and more particularly 135° or more.
    Type: Application
    Filed: October 26, 2009
    Publication date: April 28, 2011
    Applicant: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC
    Inventors: Richard J. Baumgart, Subbareddy Kanagasabapathy
  • Publication number: 20100305350
    Abstract: A diamidine compound is used to complex to a catalytic metal atom. This can be dissolved in an organic solution for homogenous catalytic reactions, such as a hydrogenation, polymerization reaction. The metal complex can be separated from the reactant solution after the reaction by bubbling carbon dioxide through the solution causing the formation of diamidinium bicarbonate, which is insoluble in organic solution and can be recovered in an aqueous medium. The diamidinium bicarbonate can be further converted back into an organic soluble diamidine by bubbling the aqueous solution with argon or nitrogen, permitting the reuse of the catalyst in homogeneous catalytic reactions.
    Type: Application
    Filed: April 1, 2010
    Publication date: December 2, 2010
    Inventor: Subbareddy Kanagasabapathy
  • Publication number: 20090064894
    Abstract: A coating composition comprising hydrophobic particles having an average size of between 7 nm and 4,000 nm and a wetting agent for promoting dispersion of the hydrophobic particles in water. The hydrophobic particles may be oxides, such as silica, titania, or zinc oxide. In one embodiment, the hydrophobic particles comprise fumed silica. The coating composition may be brushed, spin coated, or dipped onto a surface. In one embodiment, once the coating composition dries, the coating formed thereby is characterized by a contact angle formed with a water droplet in excess of 165 degrees. A method of making a coating composition comprising providing hydrophobic particles having an average size of between 7 nm and 4,000 nm, mixing a wetting agent with the hydrophobic particles to form a paste, and dispersing the paste in water by mixing to form a mixture.
    Type: Application
    Filed: September 4, 2008
    Publication date: March 12, 2009
    Applicant: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC
    Inventors: Richard J. Baumgart, Subbareddy Kanagasabapathy, Frances E. Lockwood
  • Publication number: 20090018249
    Abstract: A hydrophobic self cleaning coating composition that can be applied by conventional methods such as by spraying the composition onto a surface forming creating a wet and dry dirt repellent coating on the surface. The coating utilizes hydrophobic nanoparticles of fumed silica and/or titania in a solvent which evaporates at ambient temperature. The coating solves the problem of poor resistance to UV light, opaque appearance, and/or abrasion found in previous coatings of similar nature. Virtually transparent coating are produced as compared to conventional coatings of comparable hydrophobicity which are typically white or opaque. The coating can be applied by a single and easy spraying method and the super hydrophobic property can be achieved by drying the film by evaporation of the solvent at ambient temperature for 5 to 10 minutes.
    Type: Application
    Filed: January 30, 2007
    Publication date: January 15, 2009
    Inventors: Subbareddy Kanagasabapathy, Richard J. Baumgart, Michael Dituro, Wen-Chen Su, Frances E. Lockwood
  • Publication number: 20080250978
    Abstract: The present invention provides a water based, low VOC super hydrophobic coating composition that can be used to make wet and dry dirt repellent surfaces to keep the surfaces clean for a reasonable period of time. The coating utilizes hydrophobic nanoparticles dispersed in water. This treatment produces a virtually transparent coating releasing very little or no VOC compounds whereas previous coatings of comparable hydrophobicity release up to 99 percent VOC compounds. The coating can be applied by a simple, single application method and the super hydrophobic property can be achieved by drying at room temperature for 5 to 10 minutes. A preferred coating can be easily removed and renewed when desired. The aqueous hydrophobic self cleaning coating composition that can be applied by conventional methods such as by spraying the composition onto a surface creating a wet and dry dirt repellent coating on the surface.
    Type: Application
    Filed: January 17, 2008
    Publication date: October 16, 2008
    Inventors: Richard J. Baumgart, Subbareddy Kanagasabapathy, Frances E. Lockwood
  • Publication number: 20080221009
    Abstract: A super hydrophobic self cleaning coating composition that can be applied by conventional methods such as by spraying the composition onto a surface creating a wet and dry dirt repellent coating on the surface. The super hydrophobic self cleaning coatings are used on exterior automotive and boat surfaces, and in many other applications, to produce a self cleaning surface, reduce adherence of dirt and contaminants to a treated surface, and reduce drag in some applications providing an energy savings. The coating utilizes a blend of organic and/or inorganic polymers with hydrophobic nanoparticles of fumed silica and/or titania in a volatile solvent which evaporates at ambient temperature. The coating solves the problem of poor resistance to UV light, opaque appearance, and/or some abrasion resistance not found in previous coatings of similar nature. A preferred coating has good resistance to UV light and some resistance to abrasion.
    Type: Application
    Filed: January 28, 2008
    Publication date: September 11, 2008
    Inventors: Subbareddy Kanagasabapathy, Richard J. Baumgart, Michael A. Dituro, Wen-Chen Su, Frances E. Lockwood
  • Publication number: 20080221263
    Abstract: A coating composition and process for generating transparent, near-transparent, and semi-transparent super-hydrophobic coatings on surfaces having a contact angle of greater than 165 degrees. The composition comprises hydrophobic nanoparticles of silsesquioxanes containing adhesion promoter groups and low surface energy groups.
    Type: Application
    Filed: August 31, 2007
    Publication date: September 11, 2008
    Inventors: Subbareddy Kanagasabapathy, Richard J. Baumgart, Wen-Chen Su, Frances E. Lockwood
  • Patent number: 7390608
    Abstract: In a first aspect, silicon polymers are provided that have controlled ratio of silanol (Si—OH) moieties:Si atoms and/or a controlled amount of alkaline aqueous-solubilizing groups. Si-polymers of the invention are particularly useful as a photoresist resin component. In a further aspect, halogenated sulfonamide and thiol compounds and Si-containing polymers comprising such reacted monomers are provided.
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: June 24, 2008
    Assignee: Rohm and Haas Electronic Materials LLC
    Inventors: George G. Barclay, Subbareddy Kanagasabapathy
  • Patent number: 7217490
    Abstract: The invention includes new Si-containing monomers, polymers containing such monomers and photoresists that contain the polymers. Synthetic methods of the invention include reacting a vinyl carbocyclic aryl ester compound with a reactive silane compound to provide the monomer.
    Type: Grant
    Filed: March 3, 2003
    Date of Patent: May 15, 2007
    Assignee: Shipley Company, L.L.C.
    Inventors: George G. Barclay, Subbareddy Kanagasabapathy, Matthew A. King
  • Patent number: 7189490
    Abstract: Photoresist compositions that contain one or more components having sulfonamide and Si substitution. Preferred photoresist compositions of the invention contain an Si-polymer such as a silsesquioxane that has sulfonamide substitution and may be employed in multilayer resist systems. In preferred aspects, the Si-polymer has both sulfonamide substitution as well as moieties that can provide contrast upon exposure to photogenerated acid.
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: March 13, 2007
    Assignee: Shipley Company, L.L.C.
    Inventors: Subbareddy Kanagasabapathy, George G. Barclay
  • Patent number: 7008750
    Abstract: New methods are provided for synthesis of polysiloxanes (silsesquioxanes) and photoresists comprising same. Synthetic methods of the invention include use of a polymerization templating reagent that has multiple reactive nitrogen groups, particularly a diamine reagent.
    Type: Grant
    Filed: March 3, 2003
    Date of Patent: March 7, 2006
    Assignee: Shipley Company, L.L.C.
    Inventors: George G. Barclay, Subbareddy Kanagasabapathy, Matthew A. King
  • Publication number: 20050196699
    Abstract: New polymers are provided that contain both Ti and Si atoms and photoimageable compositions that contain such polymers. Preferred polymers are organic, e.g. one or more polymer repeat units comprise carbon atom(s). Polymers of the invention are particularly useful as a resin component of photoresists imaged at short wavelengths such as sub-300 nm and sub-200 nm.
    Type: Application
    Filed: March 3, 2005
    Publication date: September 8, 2005
    Applicant: Rohm and Haas Electronic Materials LLC
    Inventors: Subbareddy Kanagasabapathy, George Barclay
  • Publication number: 20050026077
    Abstract: Disclosed are photoimageable compositions containing silsesquioxane binder polymers and photoactive compounds, methods of forming relief images using such compositions and methods of manufacturing electronic devices using such compositions. Such compositions are useful as photoresists and in the manufacture of optoelectronic devices.
    Type: Application
    Filed: August 23, 2004
    Publication date: February 3, 2005
    Applicant: Shipley Company, L.L.C.
    Inventors: Dana Gronbeck, George Barclay, Leo Linehan, Kao Xiong, Subbareddy Kanagasabapathy
  • Publication number: 20040229159
    Abstract: Photoresist compositions are provided that comprises one or more photoacid generator compounds and a silsesquioxane resin. Preferred photoresists of the invention can exhibit reduced outgassing when exposed to laser radiation, including ArF exposures.
    Type: Application
    Filed: February 23, 2004
    Publication date: November 18, 2004
    Inventors: Subbareddy Kanagasabapathy, George G. Barclay