Patents by Inventor Narayan Raman

Narayan Raman 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: 20220041776
    Abstract: An aqueous copolymer dispersion is obtained by a multi-stage emulsion polymerization process comprising polymerizing in a reaction zone in a first polymerization stage a first monomer composition comprising at least 88 wt % of a vinyl ester of a C1 to C18 carboxylic acid and up to 12 wt % ethylene to produce a first stage polymer having Tg>20° C.; and polymerizing in the reaction zone, in a second polymerization stage and in the presence of the first stage polymer, a second monomer composition comprising a vinyl ester of a C1 to C18 carboxylic acid and a C2 to C8 alkyl ester of (meth)acrylic acid to produce a second stage polymer having Tg?20° C. Each of the polymerization stages is conducted in the presence of a stabilizing system comprising at least 0.1 wt % of a protective colloid and at least 0.05 wt % of an ionic surfactant.
    Type: Application
    Filed: February 27, 2020
    Publication date: February 10, 2022
    Inventors: Kerstin WENZEL, Narayan RAMAN, Tsz Ming TSANG, James MARTIN
  • Patent number: 8526985
    Abstract: An application server in a communication network receives a plurality of data streams from a plurality of mobile stations that include a client for the application server. The data streams may be video, audio or a combination thereof and include an indicator of originating location of the data stream. A subset of the plurality of data streams that originates from an area are determined. The first set may also be determined based on a tag that is included in each of the data streams of the first set, the tag indicating a sharing status for a respective data stream and/or a subject of the respective data stream. A first data stream of the first subset transmitted to a service subscriber having an interest preference corresponding to the tag of first set data streams. The transmitted first data stream may include overlay content associated with the service provider.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: September 3, 2013
    Assignee: Alcatel Lucent
    Inventors: Bruce R. Cilli, Charles Payette, Narayan Raman
  • Publication number: 20110130087
    Abstract: An application server in a communication network receives a plurality of data streams from a plurality of mobile stations that include a client for the application server. The data streams may be video, audio or a combination thereof and include an indicator of originating location of the data stream. A subset of the plurality of data streams that originates from an area are determined. The first set may also be determined based on a tag that is included in each of the data streams of the first set, the tag indicating a sharing status for a respective data stream and/or a subject of the respective data stream. A first data stream of the first subset transmitted to a service subscriber having an interest preference corresponding to the tag of first set data streams. The transmitted first data stream may include overlay content associated with the service provider.
    Type: Application
    Filed: December 17, 2009
    Publication date: June 2, 2011
    Inventors: Bruce R. Cilli, Charles Payette, Narayan Raman
  • Patent number: 7620273
    Abstract: A technique for improving optical cross-connections comprises placing a switch in front of a number of processing units. So configured, the units are no longer dedicated to a specific link or signal. When necessary, a unit is connected/disconnected to one or more optical links by the switch to carry out any number of processing functions, such as regeneration, Raman pumping, dispersion equalization/compensation or performance monitoring. Because the units are no longer dedicated to specific links the cost of the cross-connections and the network it is a part of can be reduced.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: November 17, 2009
    Assignee: Alcatel-Lucent USA Inc.
    Inventors: Bharat Tarachand Doshi, Stefan Hunsche, Ramesh Nagarajan, Srinivasa Prasanna, Narayan Raman, Meenakshi Sharma
  • Publication number: 20060281009
    Abstract: The present invention is related to treated filler and processes for producing said treated filler. Untreated filler slurry can be treated with a treating material and, optionally, a coupling material and then subjected to conventional drying method(s), to produce the treated filler of the invention. Treated filler has a wide variety of applications including but not limited to battery separators and rubber compositions such as tires.
    Type: Application
    Filed: May 26, 2006
    Publication date: December 14, 2006
    Inventors: James Boyer, Charles Coleman, Timothy Okel, Narayan Raman
  • Publication number: 20060229386
    Abstract: The present invention is related to treated filler and processes by which it can be produced. Untreated filler slurry can be treated with a treating material and then subjected to conventional drying method(s), to produce the treated filler of the invention. Treated filler has a wide variety of applications including but not limited to battery separators and rubber compositions such as tires.
    Type: Application
    Filed: April 11, 2005
    Publication date: October 12, 2006
    Inventors: Narayan Raman, James Boyer, Charles Coleman, Timothy Okel
  • Publication number: 20060225615
    Abstract: The present invention is related to treated filler, processes for producing said treated filler and the use of said treated filler in polymeric compositions. In particular, filler can be treated with at least one non-coupling material and at least one coupling material, then subjected to conventional drying method(s), to produce the treated filler of the present invention. The resultant treated filler has a wide variety of applications including polymeric compositions such as but not limited to rubber compositions such as tires.
    Type: Application
    Filed: April 11, 2005
    Publication date: October 12, 2006
    Inventors: Narayan Raman, James Boyer, Timothy Okel, Charles Coleman
  • Publication number: 20060228632
    Abstract: The present invention is related to treated filler and processes for producing said treated filler. Untreated filler slurry can be treated with a treating material and then subjected to conventional drying method(s), to produce the treated filler of the invention. Treated filler has a wide variety of applications including but not limited to battery separators and rubber compositions such as tires.
    Type: Application
    Filed: April 11, 2005
    Publication date: October 12, 2006
    Inventors: James Boyer, Narayan Raman, Charles Coleman, Timothy Okel
  • Publication number: 20020131153
    Abstract: A technique for improving optical cross-connections comprises placing a switch in front of a number of processing units. So configured, the units are no longer dedicated to a specific link or signal. When necessary, a unit is connected/disconnected to one or more optical links by the switch to carry out any number of processing functions, such as regeneration, Raman pumping, dispersion equalization/compensation or performance monitoring. Because the units are no longer dedicated to specific links the cost of the cross-connections and the network it is a part of can be reduced.
    Type: Application
    Filed: February 14, 2002
    Publication date: September 19, 2002
    Inventors: Bharat Tarachand Doshi, Stefan Hunsche, Ramesh Nagarajan, Srinivasa Prasanna, Narayan Raman, Meenakshi Sharma