Patents by Inventor Sriramakrishna Maruvuda

Sriramakrishna Maruvuda 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: 8084134
    Abstract: Disclosed herein is a thermoplastic composition comprising a combination of: a polysiloxane-polycarbonate copolymer and a poly(aliphatic ester)-polycarbonate copolymer comprising soft block ester units of the formula (8a): wherein m is 4 to 18, wherein the thermoplastic composition has a melt volume rate of 14 cc/10 min to 22 cc/10 min at 300° C. and under a load of 1.2 Kg and a dwell time of 6 minutes, according to ASTM D1238-04, wherein an article molded from the thermoplastic composition and having a thickness of 3.2 mm has a percent transmittance of greater than 85% according to ASTM D1003-00, and wherein 100% of a set of five test articles each having a thickness of 3.2 mm and molded from the thermoplastic composition exhibit ductile fracture at ?40° C. when measured for notched Izod Impact according to ASTM D256-04. An article comprising the thermoplastic composition is also disclosed.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: December 27, 2011
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Jon M. Malinoski, Sriramakrishna Maruvuda, Anirudha Singh
  • Patent number: 7848025
    Abstract: Disclosed herein is a camera lens comprising a thermoplastic composition comprising a poly(aliphatic ester)-polycarbonate copolymer comprising soft block ester units derived from an alpha, omega C6-20 aliphatic dicarboxylic acid or derivative thereof, a dihydroxyaromatic compound, and a carbonate source, wherein the thermoplastic composition has a melt volume rate of 13 to 25 cc/10 min at 250° C. and under a load of 1.2 Kg and a dwell time of 6 minutes, according to ASTM D1238-04, and wherein the camera lens has an effective lens area of 0.5 to 100 mm2. A method of making the camera lens, and a camera lens comprising a thermoplastic composition comprising a redistribution product of a poly(aliphatic ester)-polycarbonate, are also disclosed.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: December 7, 2010
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Akira Hatano, Theodorus Lambertus Hoeks, Dennis Karlik, Ken Kuriki, Jon M. Malinoski, Sriramakrishna Maruvuda
  • Publication number: 20100168370
    Abstract: Disclosed herein is a camera lens comprising a thermoplastic composition comprising a poly(aliphatic ester)-polycarbonate copolymer comprising soft block ester units derived from an alpha, omega C6-20 aliphatic dicarboxylic acid or derivative thereof, a dihydroxyaromatic compound, and a carbonate source, wherein the thermoplastic composition has a melt volume rate of 13 to 25 cc/10 min at 250° C. and under a load of 1.2 Kg and a dwell time of 6 minutes, according to ASTM D1238-04, and wherein the camera lens has an effective lens area of 0.5 to 100 mm2. A method of making the camera lens, and a camera lens comprising a thermoplastic composition comprising a redistribution product of a poly(aliphatic ester)-polycarbonate, are also disclosed.
    Type: Application
    Filed: December 31, 2008
    Publication date: July 1, 2010
    Inventors: Akiro Hatano, Theodorus Lambertus Hoeks, Dennis Karlik, Ken Kuriki, Jon M. Malinoski, Sriramakrishna Maruvuda
  • Publication number: 20100129649
    Abstract: Disclosed herein is a thermoplastic composition comprising a combination of: a polysiloxane-polycarbonate copolymer and a poly(aliphatic ester)-polycarbonate copolymer comprising soft block ester units of the formula (8a): wherein m is 4 to 18, wherein the thermoplastic composition has a melt volume rate of 14 cc/10 min to 22 cc/10 min at 300° C. and under a load of 1.2 Kg and a dwell time of 6 minutes, according to ASTM D1238-04, wherein an article molded from the thermoplastic composition and having a thickness of 3.2 mm has a percent transmittance of greater than 85% according to ASTM D1003-00, and wherein 100% of a set of five test articles each having a thickness of 3.2 mm and molded from the thermoplastic composition exhibit ductile fracture at ?40° C. when measured for notched Izod Impact according to ASTM D256-04. An article comprising the thermoplastic composition is also disclosed.
    Type: Application
    Filed: November 26, 2008
    Publication date: May 27, 2010
    Applicant: SABIC Innovative Plastics, IP B.V
    Inventors: Jon M. Malinoski, Sriramakrishna Maruvuda, Anirudha Singh