Patents by Inventor Manjusri Misra
Manjusri Misra 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).
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Patent number: 7256223Abstract: Polymeric materials and products, including sheet flooring materials prepared from the polymeric materials, and processes for preparing the polymeric materials, are disclosed. The polymeric materials include a polylactic acid-based polymer in combination with plasticizer and a compatibilizer, and optionally include a filler. The polymeric material can include between about 30 to about 50 percent by weight polyvinyl chloride, polyethylene glycol, polyglycolide, ethylene vinyl acetate, polycarbonate, polycaprolactone, polyhydroxyalkanoates, or polyolefins modified with polar groups, for example, ionomers. The plasticizer is typically an epoxidized vegetable oil or esterified and epoxidized vegetable oil and is typically present in an amount of between about 10 and about 50% by weight. In some embodiments, the compatibilizer is a polyolefin modified with one or more polar functional groups, and is typically present in an amount of between about 5 and about 10% by weight.Type: GrantFiled: January 10, 2005Date of Patent: August 14, 2007Assignee: Michigan State University, Board of TrusteesInventors: Amar K. Mohanty, Lawrence T. Drzal, Brian P. Rook, Manjusri Misra
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Patent number: 7253221Abstract: A polymer composition of cellulose esters, plasticizer, a cellulose linked anhydride as a compatibilizer and organically modified clay. The composites have superior tensile and flexural strengths, modulus, dimensional stability and heat deflection temperature (HDT).Type: GrantFiled: April 21, 2005Date of Patent: August 7, 2007Assignee: Board of Trustees of Michigan State UniversityInventors: Amar K. Mohanty, Lawrence T. Drzal, Hwanman Park, Manjusri Misra, Arief C. Wibowo
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Patent number: 7208221Abstract: A Sheet Molding Compound (SMC) as prepregs and cured compositions with naturally derived fibers which have been dried for at least three hours is described. The SMC process combines polyester polymer or resin with the fibers preferably continuously. The molded products are useful for a variety a purposes where glass fiber filled polyester polymers are conventionally used.Type: GrantFiled: October 15, 2004Date of Patent: April 24, 2007Assignee: Board of Trustees of Michigan State UniversityInventors: Lawrence T. Drzal, Geeta Mehta, Manjusri Misra, Amar K. Mohanty, Kelby Thayer
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Patent number: 7125950Abstract: A solvent-free process for making a polyol fatty acid polyester composition useful for preparation of polyurethanes is described. These compositions are preferably made by reaction of a natural oil (from plant or animal) with a multi-functional hydroxyl compound derived from a natural source, such as sorbitol, in presence of an alkali metal salt or base such as potassium hydroxide as a catalyst which also acts to saponify the reaction mixture. The hydroxyl content of the prepared composition depends on the amount of the multi-functional hydroxyl compound used in the preparation. In another embodiment, the hydroxyl groups of these compositions are reacted with an isocyanate, such as the polymeric diphenylmethane diisocyanate (also known as 4,4?-diphenyl methane diisocyanate, or MDI) to form polyurethanes in a conventional manner.Type: GrantFiled: April 29, 2004Date of Patent: October 24, 2006Assignee: Board of Trustees of Michigan State UniversityInventors: Jean-Pierre L. Dwan'Isa, Lawrence T. Drzal, Amar K. Mohanty, Manjusri Misra
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Publication number: 20060058425Abstract: Composites of cellulose esters, plasticizer, a maleated compatibilizer and organically modified clay are described. The composites have superior tensile and flexural strengths, modulus, dimensional stability and heat deflection temperature (HDT).Type: ApplicationFiled: April 21, 2005Publication date: March 16, 2006Applicant: Board of Trustees of Michigan State UniversityInventors: Amar Mohanty, Lawrence Drzal, Hwanman Park, Manjusri Misra, Arief Wibowo
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Publication number: 20060043629Abstract: A process for the manufacture of natural fiber and polymer composites is described. Thermoplastically processed plasticized soy flour based plastics are used with thermoplastic polymers. Polymers of soy flour and an in situ polymerized polyvinyl polymer which links proteins and carbohydrates in the flour to form the polymer are used. The composites are useful in engineering materials.Type: ApplicationFiled: August 26, 2005Publication date: March 2, 2006Applicant: Board of Trustees of Michigan State UniversityInventors: Lawrence Drzal, Amar Mohanty, Wanjun Liu, Kelby Thayer, Manjusri Misra
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Publication number: 20060046042Abstract: A Sheet Molding Compound (SMC) as prepregs and cured compositions with naturally derived fibers which have been dried for at least three hours is described. The SMC process combines polyester polymer or resin with the fibers preferably continuously. The molded products are useful for a variety a purposes where glass fiber filled polyester polymers are conventionally used.Type: ApplicationFiled: October 15, 2004Publication date: March 2, 2006Applicant: Board of Trustees of Michigan State UniversityInventors: Lawrence Drzal, Geeta Mehta, Manjusri Misra, Amar Mohanty, Kelby Thayer
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Publication number: 20050215672Abstract: A process and composition using anhydride grafted polyhydroxyalkanoate (PHA) polymer (grafted polymer) which has been extruded with a PHA polymer (non-grafted) and a dried cellulose fiber which reacts with the maleated PHA is described. The composites formed have improved mechanical properties.Type: ApplicationFiled: February 11, 2005Publication date: September 29, 2005Applicant: Board of Trustees of Michigan State UniversityInventors: Amar Mohanty, Lawrence Drzal, Shrojal Desai, Manjusri Misra, Prasad Mulukutla
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Publication number: 20050136259Abstract: Polymeric materials and products, including sheet flooring materials prepared from the polymeric materials, and processes for preparing the polymeric materials, are disclosed. The polymeric materials include a polylactic acid-based polymer in combination with plasticizer and a compatibilizer, and optionally include a filler. The polymeric material can include between about 30 to about 50 percent by weight polyvinyl chloride, polyethylene glycol, polyglycolide, ethylene vinyl acetate, polycarbonate, polycaprolactone, polyhydroxyalkanoates, or polyolefins modified with polar groups, for example, ionomers. The plasticizer is typically an epoxidized vegetable oil or esterified and epoxidized vegetable oil and is typically present in an amount of between about 10 and about 50% by weight. In some embodiments, the compatibilizer is a polyolefin modified with one or more polar functional groups, and is typically present in an amount of between about 5 and about 10% by weight.Type: ApplicationFiled: January 10, 2005Publication date: June 23, 2005Inventors: Amar Mohanty, Lawrence Drzal, Brian Rook, Manjusri Misra
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Publication number: 20050123744Abstract: Polymeric materials and products, including sheet flooring materials prepared from the polymeric materials, and processes for preparing the polymeric materials, are disclosed. The polymeric materials include a polylactic acid-based polymer in combination with plasticizer and a compatibilizer, and optionally include a filler. The polymeric material can include between about 30 to about 50 percent by weight polyvinyl chloride, polyethylene glycol, polyglycolide, ethylene vinyl acetate, polycarbonate, polycaprolactone, polyhydroxyalkanoates, or polyolefins modified with polar groups, for example, ionomers. The plasticizer is typically an epoxidized vegetable oil or esterified and epoxidized vegetable oil and is typically present in an amount of between about 10 and about 50% by weight. In some embodiments, the compatibilizer is a polyolefin modified with one or more polar functional groups, and is typically present in an amount of between about 5 and about 10% by weight.Type: ApplicationFiled: January 10, 2005Publication date: June 9, 2005Inventors: Amar Mohanty, Lawrence Drzal, Brian Rook, Manjusri Misra
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Publication number: 20050119371Abstract: Precursor epoxidized vegetable oil or ester derivatives of the oil is mixed and cured with a biodegradation resistant epoxy resin precursor to provide a cured composition. The composition preferably includes a filler as a composite and/or continuous carbon fibers as a mat or strand. Novel epoxidized linseed/soybean oil compositions are described. The compositions are useful in place of the standard epoxy resin compositions making articles of manufacture.Type: ApplicationFiled: October 15, 2004Publication date: June 2, 2005Applicant: Board of Trustees of Michigan State UniversityInventors: Lawrence Drzal, Manjusri Misra, Hiroaki Miyagawa, Amar Mohanty
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Patent number: 6869985Abstract: Polymeric materials and products, including sheet flooring materials prepared from the polymeric materials, and processes for preparing the polymeric materials, are disclosed. The polymeric materials include a polylactic acid-based polymer in combination with plasticizer and a compatibilizer, and optionally include a filler. The polymeric material can include between about 30 to about 50 percent by weight polyvinyl chloride, polyethylene glycol, polyglycolide, ethylene vinyl acetate, polycarbonate, polycaprolactone, polyhydroxyalkanoates, or polyolefins modified with polar groups, for example, ionomers. The plasticizer is typically an epoxidized vegetable oil or esterified and epoxidized vegetable oil and is typically present in an amount of between about 10 and about 50% by weight. In some embodiments, the compatibilizer is a polyolefin modified with one or more polar functional groups, and is typically present in an amount of between about 5 and about 10% by weight.Type: GrantFiled: November 26, 2002Date of Patent: March 22, 2005Assignee: AWI Licensing CompanyInventors: Amar Kumar Mohanty, Lawrence T. Drzal, Brian P. Rook, Manjusri Misra
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Publication number: 20040242910Abstract: A solvent-free process for making a polyol fatty acid polyester composition useful for preparation of polyurethanes is described. These compositions are preferably made by reaction of a natural oil (from plant or animal) with a multi-functional hydroxyl compound derived from a natural source, such as sorbitol, in presence of an alkali metal salt or base such as potassium hydroxide as a catalyst which also acts to saponify the reaction mixture. The hydroxyl content of the prepared composition depends on the amount of the multi-functional hydroxyl compound used in the preparation. In another embodiment, the hydroxyl groups of these compositions are reacted with an isocyanate, such as the polymeric diphenylmethane diisocyanate (also known as 4,4′-diphenyl methane diisocyanate, or MDI) to form polyurethanes in a conventional manner.Type: ApplicationFiled: April 29, 2004Publication date: December 2, 2004Applicant: Board of Trustees of Michigan State UniversityInventors: Jean-Pierre L. Dwan ' Isa, Lawrence T. Drzal, Amar K. Mohanty, Manjusri Misra
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Publication number: 20040122133Abstract: A thermoplastic polymer composition reinforced with fibers such as cellulose or other fillers, particularly from natural sources, and a process for manufacturing the composition are disclosed. The preferred process for making the fiber-reinforced thermoplastic polymer composition comprises melting a high melting temperature thermoplastic polymer, mixing the melted thermoplastic polymer with an organic or inorganic salt to reduce the melting temperature of the melted thermoplastic polymer to a melting temperature which does not degrade the fibers, and then adding the fibers to the reduced melting temperature thermoplastic polymer-salt mixture to produce the natural fiber-reinforced thermoplastic polymer composition. The natural fiber-reinforced thermoplastic polymer composition can then be melted at the reduced melting temperature to manufacture a plurality of articles.Type: ApplicationFiled: November 5, 2003Publication date: June 24, 2004Applicant: Board of Trustees of Michigan State UniversityInventors: Amar K. Mohanty, Praveen Tummala, Manjusri Misra, Lawrence T. Drzal
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Publication number: 20030216496Abstract: Polymeric materials and products, including sheet flooring materials prepared from the polymeric materials, and processes for preparing the polymeric materials, are disclosed. The polymeric materials include a polylactic acid-based polymer in combination with plasticizer and a compatibilizer, and optionally include a filler. The polymeric material can include between about 30 to about 50 percent by weight polyvinyl chloride, polyethylene glycol, polyglycolide, ethylene vinyl acetate, polycarbonate, polycaprolactone, polyhydroxyalkanoates, or polyolefins modified with polar groups, for example, ionomers. The plasticizer is typically an epoxidized vegetable oil or esterified and epoxidized vegetable oil and is typically present in an amount of between about 10 and about 50% by weight. In some embodiments, the compatibilizer is a polyolefin modified with one or more polar functional groups, and is typically present in an amount of between about 5 and about 10% by weight.Type: ApplicationFiled: November 26, 2002Publication date: November 20, 2003Inventors: Amar Kumar Mohanty, Lawrence T. Drzal, Brian P. Rook, Manjusri Misra