Patents by Inventor R. Sankaran

R. Sankaran 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: 20060042414
    Abstract: A system and method for making nanoparticles. The system includes a first cathode including a first metal tube associated with a first end and a second end, a first anode including a second metal tube associated with a third end and a fourth end, and a first container including a first gas inlet. The first end and the third end are located inside the first container. The first end and the third end are separated by a first gap, the first metal tube is configured to allow a first gas to flow from the second end to the first end, and the first container is configured to allow a second gas to flow from the first gas inlet into the second metal tube through at least a first part of the first gap.
    Type: Application
    Filed: May 4, 2005
    Publication date: March 2, 2006
    Applicant: California Institute of Technology
    Inventors: R. Sankaran, Konstantinos Giapis, Richard Flagan, Dean Holunga
  • Publication number: 20050258419
    Abstract: A nanoparticle for emitting or absorbing light, and a system and method for making thereof. A nanoparticle for emitting or absorbing light includes a nanoparticle core including a core material and a nanoparticle surface passivated by at least a passivating material.
    Type: Application
    Filed: May 4, 2005
    Publication date: November 24, 2005
    Applicant: California Institute of Technology
    Inventors: R. Sankaran, Konstantinos Giapis
  • Patent number: 6027600
    Abstract: A method for printing comprises the steps of feeding a multi-layer compound sheet into a dual-simplex printer, printing on each side of the multi-layer compound sheet, and separating the layers of the multi-layer compound sheet to produce at; least two sheets having with printed material on one side. The multi-layer sheets comprise a first layer and second layer bonded to the first layer with pressure sensitive adhesive.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: February 22, 2000
    Assignee: International Business Machines Corporaiton
    Inventors: Velliyur R. Sankaran, Fred A. Willis, Ronald W. Wisnesky
  • Patent number: 5376996
    Abstract: A fuser roll for fusing toner (12) onto paper (10) in electrophotographic printers and copiers is made of a hollow metal tube (14) provided with a coating (18), of about 60 to 90 wt % polyphenylene sulfide (PPS) and about 10 to 40 wt % polytetrafluoroethylene (PTFE). Up to about 40 wt % of a filler may be added to the total composition. The fuser roll coated with the PPS-PTFE composition of the invention results in improved fusing of the toner, providing a matt finish of the fused toner on paper, improved uniformity of print quality, longer wear of the fuser roll, and reduced toner smear. The PPS-PTFE roll produces better toner fusing with both rough and smooth papers, and performs better at the same fuser roll temperature of 190.degree. C. than PTFE fuser rolls.
    Type: Grant
    Filed: December 16, 1992
    Date of Patent: December 27, 1994
    Assignee: International Business Machines Corporation
    Inventor: Velliyur R. Sankaran