Patents by Inventor Lawrence Drzal

Lawrence Drzal 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: 20070287795
    Abstract: A composite composition which comprises a synthetic polymer, and corncob granules which have been modified, such as with a chemical reacted with the hydroxyl groups on the granules is described. The corncob granules are modified so as to be compatible with the polymer.
    Type: Application
    Filed: June 8, 2007
    Publication date: December 13, 2007
    Applicant: Board of Trustees of Michigan State University
    Inventors: Masud Huda, Venkatesh Balan, Lawrence Drzal, Bruce Dale, Shishir Chundawat, Manjusri Misra
  • Publication number: 20070101824
    Abstract: A method for producing nanoparticles on a substrate using a metal precursor in an ionic liquid and microwave heating is described. The composite compositions are useful as catalysts for chemical reactions, fuel cell, supercapacitor and battery components, and the like.
    Type: Application
    Filed: May 17, 2006
    Publication date: May 10, 2007
    Applicant: Board of Trustees of Michigan State University
    Inventors: Lawrence Drzal, In-Hwan Do, Hiroyuki Fukushima
  • Publication number: 20060241237
    Abstract: Graphite nanoplatelets of expanded graphite and composites and products produced therefrom are described. The graphite is expanded by microwaves or radiofrequency waves in the presence of a gaseous atmosphere. Various devices are described for expanding the intercalated graphite by means of microwaves or other radiofrequency waves to produce the expanded graphite. These devices can be used in a continuous process.
    Type: Application
    Filed: May 16, 2006
    Publication date: October 26, 2006
    Applicant: Board of Trustees of Michigan State University
    Inventors: Lawrence Drzal, Hiroyuki Fukushima, Brian Rook, Michael Rich
  • Publication number: 20060231792
    Abstract: Graphite nanoplatelets of expanded graphite and polymer composites produced therefrom are described. The graphite is expanded from an intercalated graphite by microwaves or radiofrequency waves in the presence of a gaseous atmosphere. The composites have barrier and/or conductive properties due to the expanded graphite.
    Type: Application
    Filed: May 17, 2006
    Publication date: October 19, 2006
    Applicant: Board of Trustees of Michigan State University
    Inventors: Lawrence Drzal, Hiroyuki Fukushima
  • Publication number: 20060148965
    Abstract: Graphite nanoplatelets of expanded graphite and composites and products produced therefrom are described. The preferred method of expanding the graphite is by microwaves or other radiofrequency wave treatment of intercalated graphite. The expanded graphite is preferably then crushed to nanometer (substantially all 200 microns or less). The expanded graphite is used in polymer composites. The expanded graphite is particularly useful for batteries, anodes and fuel cells.
    Type: Application
    Filed: February 24, 2006
    Publication date: July 6, 2006
    Applicant: Board of Trustees operating Michigan State University
    Inventors: Lawrence Drzal, Hiroyuki Fukushima
  • Publication number: 20060148966
    Abstract: Graphite nanoplatelets of expanded graphite and composites and products produced therefrom are described. The preferred method of expanding the graphite is by microwaves or other radiofrequency wave treatment of intercalated graphite. The expanded graphite is preferably then crushed to nanometer (substantially all 200 microns or less). The expanded graphite is used in polymer composites. The expanded graphite is particularly useful for batteries, anodes and fuel cells.
    Type: Application
    Filed: February 27, 2006
    Publication date: July 6, 2006
    Applicant: Board of Trustees operating Michigan State University
    Inventors: Lawrence Drzal, Hiroyuki Fukushima
  • Publication number: 20060058425
    Abstract: 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: Application
    Filed: April 21, 2005
    Publication date: March 16, 2006
    Applicant: Board of Trustees of Michigan State University
    Inventors: Amar Mohanty, Lawrence Drzal, Hwanman Park, Manjusri Misra, Arief Wibowo
  • Publication number: 20060043629
    Abstract: 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: Application
    Filed: August 26, 2005
    Publication date: March 2, 2006
    Applicant: Board of Trustees of Michigan State University
    Inventors: Lawrence Drzal, Amar Mohanty, Wanjun Liu, Kelby Thayer, Manjusri Misra
  • Publication number: 20060046042
    Abstract: 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: Application
    Filed: October 15, 2004
    Publication date: March 2, 2006
    Applicant: Board of Trustees of Michigan State University
    Inventors: Lawrence Drzal, Geeta Mehta, Manjusri Misra, Amar Mohanty, Kelby Thayer
  • Publication number: 20050215672
    Abstract: 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: Application
    Filed: February 11, 2005
    Publication date: September 29, 2005
    Applicant: Board of Trustees of Michigan State University
    Inventors: Amar Mohanty, Lawrence Drzal, Shrojal Desai, Manjusri Misra, Prasad Mulukutla
  • Publication number: 20050136259
    Abstract: 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: Application
    Filed: January 10, 2005
    Publication date: June 23, 2005
    Inventors: Amar Mohanty, Lawrence Drzal, Brian Rook, Manjusri Misra
  • Publication number: 20050123744
    Abstract: 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: Application
    Filed: January 10, 2005
    Publication date: June 9, 2005
    Inventors: Amar Mohanty, Lawrence Drzal, Brian Rook, Manjusri Misra
  • Publication number: 20050119371
    Abstract: 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: Application
    Filed: October 15, 2004
    Publication date: June 2, 2005
    Applicant: Board of Trustees of Michigan State University
    Inventors: Lawrence Drzal, Manjusri Misra, Hiroaki Miyagawa, Amar Mohanty