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: 8679999Abstract: 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: GrantFiled: January 31, 2013Date of Patent: March 25, 2014Assignee: Aditya Birla Science & Technology Co. Ltd.Inventors: Subbareddy Kanagasabapathy, Yogesh Laxman Borle, Bir Kapoor, Arati Verma
-
Patent number: 8338351Abstract: 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: GrantFiled: March 29, 2011Date of Patent: December 25, 2012Assignee: Ashland Licensing and Intellectual Property, LLCInventors: Subbareddy Kanagasabapathy, Richard J. Baumgart, Wen-Chen Su, Frances E. Lockwood, Vinod Kanniah
-
Patent number: 8258206Abstract: 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: GrantFiled: April 13, 2007Date of Patent: September 4, 2012Assignee: Ashland Licensing and Intellectual Property, LLCInventors: Subbareddy Kanagasabapathy, Richard J. Baumgart, Wen-Chen Su, Frances E. Lockwood
-
Publication number: 20120142814Abstract: 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: ApplicationFiled: April 13, 2007Publication date: June 7, 2012Inventors: Subbareddy Kanagasabapathy, Richard J. Baumgart, Wen-Chen Su, Frances E. Lockwood
-
Patent number: 8147607Abstract: 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: GrantFiled: October 26, 2009Date of Patent: April 3, 2012Assignee: Ashland Licensing and Intellectual Property LLCInventors: Richard J. Baumgart, Subbareddy Kanagasabapathy
-
Publication number: 20110177252Abstract: 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: ApplicationFiled: March 29, 2011Publication date: July 21, 2011Applicant: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLCInventors: Subbareddy Kanagasabapathy, Richard J. Baumgart, Wen-Chen Su, Frances E. Lockwood, Vinod Kanniah
-
Publication number: 20110094417Abstract: 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: ApplicationFiled: October 26, 2009Publication date: April 28, 2011Applicant: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLCInventors: Richard J. Baumgart, Subbareddy Kanagasabapathy
-
Publication number: 20100305350Abstract: 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: ApplicationFiled: April 1, 2010Publication date: December 2, 2010Inventor: Subbareddy Kanagasabapathy
-
Publication number: 20090064894Abstract: 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: ApplicationFiled: September 4, 2008Publication date: March 12, 2009Applicant: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLCInventors: Richard J. Baumgart, Subbareddy Kanagasabapathy, Frances E. Lockwood
-
Publication number: 20090018249Abstract: 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: ApplicationFiled: January 30, 2007Publication date: January 15, 2009Inventors: Subbareddy Kanagasabapathy, Richard J. Baumgart, Michael Dituro, Wen-Chen Su, Frances E. Lockwood
-
Publication number: 20080250978Abstract: 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: ApplicationFiled: January 17, 2008Publication date: October 16, 2008Inventors: Richard J. Baumgart, Subbareddy Kanagasabapathy, Frances E. Lockwood
-
Publication number: 20080221263Abstract: 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: ApplicationFiled: August 31, 2007Publication date: September 11, 2008Inventors: Subbareddy Kanagasabapathy, Richard J. Baumgart, Wen-Chen Su, Frances E. Lockwood
-
Publication number: 20080221009Abstract: 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: ApplicationFiled: January 28, 2008Publication date: September 11, 2008Inventors: Subbareddy Kanagasabapathy, Richard J. Baumgart, Michael A. Dituro, Wen-Chen Su, Frances E. Lockwood
-
Patent number: 7390608Abstract: 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: GrantFiled: October 21, 2003Date of Patent: June 24, 2008Assignee: Rohm and Haas Electronic Materials LLCInventors: George G. Barclay, Subbareddy Kanagasabapathy
-
Patent number: 7217490Abstract: 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: GrantFiled: March 3, 2003Date of Patent: May 15, 2007Assignee: Shipley Company, L.L.C.Inventors: George G. Barclay, Subbareddy Kanagasabapathy, Matthew A. King
-
Patent number: 7189490Abstract: 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: GrantFiled: October 21, 2003Date of Patent: March 13, 2007Assignee: Shipley Company, L.L.C.Inventors: Subbareddy Kanagasabapathy, George G. Barclay
-
Patent number: 7008750Abstract: 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: GrantFiled: March 3, 2003Date of Patent: March 7, 2006Assignee: Shipley Company, L.L.C.Inventors: George G. Barclay, Subbareddy Kanagasabapathy, Matthew A. King
-
Publication number: 20050196699Abstract: 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: ApplicationFiled: March 3, 2005Publication date: September 8, 2005Applicant: Rohm and Haas Electronic Materials LLCInventors: Subbareddy Kanagasabapathy, George Barclay
-
Publication number: 20050026077Abstract: 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: ApplicationFiled: August 23, 2004Publication date: February 3, 2005Applicant: Shipley Company, L.L.C.Inventors: Dana Gronbeck, George Barclay, Leo Linehan, Kao Xiong, Subbareddy Kanagasabapathy
-
Publication number: 20040229159Abstract: 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: ApplicationFiled: February 23, 2004Publication date: November 18, 2004Inventors: Subbareddy Kanagasabapathy, George G. Barclay