Patents by Inventor Nirupama Kenkare
Nirupama Kenkare 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).
-
Publication number: 20190390058Abstract: Described herein are foam materials comprising a blend of a poly(biphenyl ether sulfone) (PPSU) and a polyethersulfone polymer (PES) with improved compressive strength and impact performance, a method for their formation, and articles comprising said foam materials for use in various lightweight applications such as transport and building materials.Type: ApplicationFiled: January 11, 2018Publication date: December 26, 2019Inventors: Nirupama KENKARE, Kermit S. KWAN, William W. LOONEY, Mohammad Jamal EL-HIBRI, Vijay GOPALAKRISHNAN, Jason RICH
-
Patent number: 9969854Abstract: A foamable composition comprising from 60 to 99.88% by weight (% wt.) of at least one poly(aryl ether sulfone), from 0.10 to 10.00% by weight (% wt.) of at least one olefinic polymer, from 0.01 to 5.00% by weight (% wt.) of at least one tetrazole compound and from 0.01 to 2.50% by weight (% wt.) of at least one additive selected from the group of titanium dioxide (TiO2), clays, talc, silicates, silica, aluminates, barites, titanates, borates, nitrides, carbon-based materials or combinations thereof, all % wt. are relative to the total weight of the composition (C). Foam materials made from said foamable compositions and articles made from said foam materials.Type: GrantFiled: December 18, 2014Date of Patent: May 15, 2018Assignee: SOLVAY SPECIALTY POLYMERS USA, LLCInventors: Nirupama Kenkare, Kermit S. Kwan
-
Publication number: 20170349699Abstract: Described herein are polyphenylene fibers. The polyphenylene fibers have one or more polyphenylene polymers. The polyphenylene fibers can further include one or more poly(aryl ether sulfone) polymers. In some embodiments, the polyphenylene fibers can have an average diameter that is less than about 1 micron. The polyphenylene fibers can have desirable mechanical properties. Also described herein are methods for forming polyphenylene fibers. In some embodiments, the fibers can be fabricated using specifically engineered polymer solutions in conjunctions with adapted force spinning techniques.Type: ApplicationFiled: November 10, 2015Publication date: December 7, 2017Applicant: SOLVAY SPECIALTY POLYMERS USA, LLCInventors: David Blake ROLLER, Mohammad Jamal EL-HIBRI, Nirupama KENKARE, DeeDee SMITH
-
Patent number: 9650485Abstract: A foam material made from a composition [composition (C)] comprising at least one high temperature poly(aryl ether sulfone) (PAESHT) polymer characterized in that the PAES polymer comprises from 1 to 99% by weight amount of at least one recurring unit (RPAES) [(RPAES?1)]) based on the total amount of recurring units, and from 1 to 99% by weight amount of at least one recurring unit (RPAES) [(RPAES?2)], based on the total amount of recurring units, and wherein said (RPAES?2) recurring unit is different from the (RPAES?1) recurring unit.Type: GrantFiled: October 10, 2013Date of Patent: May 16, 2017Assignee: SOLVAY SPECIALTY POLYMERS USA, LLC.Inventors: Mohammad Jamal El-Hibri, Nirupama Kenkare, Kermit S. Kwan, William Walter Looney
-
Publication number: 20170022344Abstract: A foamable composition comprising from 60 to 99.88% by weight (% wt.) of at least one poly(aryl ether sulfone), from 0.10 to 10.00% by weight (% wt.) of at least one olefinic polymer, from 0.01 to 5.00% by weight (% wt.) of at least one tetrazole compound and from 0.01 to 2.50% by weight (% wt.) of at least one additive selected from the group of titanium dioxide (Ti02), clays, talc, silicates, silica, aluminates, barites, titanates, borates, nitrides, carbon-based materials or combinations thereof, all % wt. are relative to the total weight of the composition (C). Foam materials made from said foamable compositions and articles made from said foam materials.Type: ApplicationFiled: December 18, 2014Publication date: January 26, 2017Inventors: Nirupama Kenkare, Kermit S. Kwan
-
Publication number: 20160060414Abstract: A method for manufacturing a thermoformed a polyetherimide/poly(biphenyl ether sulfone) foam article which comprises following three steps: Step 1. preparing a polyetherimide (PEI)/poly(biphenyl ether sulfone) (P2) foamable composition [composition (FP)], wherein said composition (FP) comprises PEI in an amount ranging from 0.1% weight (% wt.) to 99.9% wt., based on the total weight of the PEI and the poly(biphenyl ether sulfone) (P2), Step 2. foaming the composition (FP) to yield a foamed (PEI)/poly(biphenyl ether sulfone) material [foam (P) material], and Step 3. molding said foam (P) material under the effect of heat and pressure to provide a thermoformed foamed article.Type: ApplicationFiled: April 14, 2014Publication date: March 3, 2016Applicant: SOLVAY SPECIALTY POLYMERS USA, LLCInventors: Nirupama KENKARE, Kermit S. KWAN, Mohammad Jamal EL-HIBRI
-
Patent number: 9261626Abstract: The invention is related to a disposable contact lens comprising a top coating which is made of a hydrophilic polymeric material including dangling hydrophilic polymer chains covalently linked to the hydrophilic polymeric material through oligo-caprolactone linkages susceptible to enzymatic degradation in the eyes. The top coating is stable to lens processing/storage and confers lubricity to the lens. However, it slowly is degraded during the lens wear due to the action of enzymes (e.g., Lipase) in tear film. The loss in lubricity will be experienced as a drop in comfort for the lens wearer and thereby serves as the built-in compliance features of the disposable contact lens.Type: GrantFiled: December 6, 2012Date of Patent: February 16, 2016Assignee: Novartis AGInventors: Newton T. Samuel, Nirupama Kenkare
-
Publication number: 20150267023Abstract: A foam material made from a composition [composition (C)] comprising at least one high temperature poly(aryl ether sulfone) (PAESHT) polymer characterized in that the PAES polymer comprises from 1 to 99% by weight amount of at least one recurring unit (RPAES) [(RPAES?1)]) based on the total amount of recurring units, and from 1 to 99% by weight amount of at least one recurring unit (RPAES) [(RPAES?2)], based on the total amount of recurring units, and wherein said (RPAES?2) recurring unit is different from the (RPAES?1) recurring unit.Type: ApplicationFiled: October 10, 2013Publication date: September 24, 2015Applicant: SOLVAY SPECIALTY POLYMERS USA, LLC.Inventors: Mohammad Jamal El-Hibri, Nirupama Kenkare, Kermit S. Kwan, William Walter Looney
-
Publication number: 20140343184Abstract: A method for manufacturing a thermo formed poly(biphenyl ether sulfone) foam article which comprises following three steps: Step 1. preparing a poly(biphenyl ether sulfone) foamable composition [composition (FP)], foaming the composition (FP) to yield a foamed poly(biphenyl ether sulfone) material [foam (P) material], and Step 2. molding said foam (P) material under the effect of heat and pressure to provide a thermoformed foamed article. Step 3. molding said foam (P) material under the effect of heat and pressure to provide a thermoformed foamed article.Type: ApplicationFiled: December 19, 2012Publication date: November 20, 2014Applicant: SOLVAY SPECIALTY POLYMERS USA, LLC.Inventors: Shari W. Axelrad, Keshav Gautam, Armin Klesing, Mohammad Jamal El-Hibri, Marc Schelles, Nirupama Kenkare
-
Publication number: 20140256835Abstract: A foam material made from a composition (C) comprising a polyetherimide (PEI) and a poly(biphenyl ether sulfone) (P2).Type: ApplicationFiled: October 11, 2012Publication date: September 11, 2014Applicant: SOLVAY SPECIALTY POLYMERS USA, LLC.Inventors: Armin Klesing, Shari W. Axelrad, Mohammad Jamal El-Hibri, Marc Schelles, Nirupama Kenkare
-
Patent number: 8784867Abstract: The instant invention pertains to a method for producing contact lenses with improved oxidative stability of Carotenoids in the contact lens. The method of the invention involves adding a vitamin E material into a contact lens in an amount sufficient to reduce oxidative degradation of Carotenoids in the lens by at least about 30% in comparison with an identical contact lens without the vitamin E material.Type: GrantFiled: December 17, 2012Date of Patent: July 22, 2014Assignee: Novartis AGInventors: Newton T. Samuel, Nirupama Kenkare, Peter D. Lackey, Jessie Chen
-
Patent number: 6991679Abstract: An apparatus for applying a primary coating and a secondary coating to an optical fiber is disclosed. The apparatus includes at least one pressurized source of primary coating, a first primary reservoir for applying a first layer of the primary coating to the optical fiber, a first primary die including a first primary land configured to size the first layer of the primary coating, a second primary reservoir for applying a second layer of the primary coating to the optical fiber, a second primary die including a second primary land, a pressurized source of the secondary coating, a secondary reservoir for applying a layer of the secondary coating to the optical fiber, and a secondary die including a secondary land configured to size the layer of the secondary coating.Type: GrantFiled: February 28, 2003Date of Patent: January 31, 2006Assignee: Fitel USA CorporationInventors: Nirupama Kenkare, Robert C. Moore, Mahmood Tabaddor, Jason W. Shiroishi
-
Patent number: 6923023Abstract: Methods and apparatuses estimate and control optical fiber primary coating diameter for wet-on-wet optical fiber manufacturing. The primary coating diameter for a particular length of optical fiber is calculated based upon a measurement of the weight of primary and/or secondary coating material consumed during optical fiber manufacturing. Control of the primary coating diameter is effected by a coating controller which can increase or decrease the primary coating diameter through control of glass temperature, coating viscosity and/or other parameters during wet-on-wet fiber manufacture.Type: GrantFiled: October 1, 2002Date of Patent: August 2, 2005Assignee: Fitel U.S.A. CorporationInventors: Siu-Ping Hong, Jason W. Shiroishi, Nirupama Kenkare
-
Publication number: 20040170758Abstract: An apparatus for applying a primary coating and a secondary coating to an optical fiber is disclosed. The apparatus includes at least one pressurized source of primary coating, a first primary reservoir for applying a first layer of the primary coating to the optical fiber, a first primary die including a first primary land configured to size the first layer of the primary coating, a second primary reservoir for applying a second layer of the primary coating to the optical fiber, a second primary die including a second primary land, a pressurized source of the secondary coating, a secondary reservoir for applying a layer of the secondary coating to the optical fiber, and a secondary die including a secondary land configured to size the layer of the secondary coating.Type: ApplicationFiled: February 28, 2003Publication date: September 2, 2004Inventors: Nirupama Kenkare, Robert C. Moore, Mahmood Tabaddor, Jason W. Shiroishi
-
Publication number: 20040170367Abstract: An optical fiber including a layer of primary coating material having a first modulus, a layer of color coating material having a second modulus, a layer of secondary coating having a third modulus, and wherein the first modulus, the second modulus, and the third modulus are different values.Type: ApplicationFiled: October 15, 2003Publication date: September 2, 2004Inventors: Nirupama Kenkare, Robert C. Moore, John M. Turnipseed, Shunhe Xiong
-
Publication number: 20040060323Abstract: Methods and apparatuses estimate and control optical fiber primary coating diameter for wet-on-wet optical fiber manufacturing. The primary coating diameter for a particular length of optical fiber is calculated based upon a measurement of the weight of primary and/or secondary coating material consumed during optical fiber manufacturing. Control of the primary coating diameter is effected by a coating controller which can increase or decrease the primary coating diameter through control of glass temperature, coating viscosity and/or other parameters during wet-on-wet fiber manufacture.Type: ApplicationFiled: October 1, 2002Publication date: April 1, 2004Applicant: Fitel U.S.A. Corp.Inventors: Siu-Ping Hong, Jason W. Shiroishi, Nirupama Kenkare