Patents by Inventor Ramesh Sivarajan

Ramesh Sivarajan 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: 20030211028
    Abstract: Buckyrock is a three-dimensional, solid block material comprising an entangled network of single-wall carbon nanotubes (SWNT), wherein the block comprises greater than 75 wt % SWNT. SWNT buckyrock is mechanically strong, tough and impact resistant. The single-wall carbon nanotubes in buckyrock form are present in a random network of individual single-wall carbon nanotubes, SWNT “ropes” and combinations thereof. The random network of the SWNT or SWNT ropes can be held in place by non-covalent “cross-links” between the nanotubes at nanotube contact points. In one embodiment, SWNT buckyrock is made by forming a SWNT-water slurry, slowly removing water from the slurry which results in a SWNT-water paste, and allowing the paste to dry very slowly, such that the SWNT network of the SWNT-water paste is preserved during solvent evaporation.
    Type: Application
    Filed: March 19, 2003
    Publication date: November 13, 2003
    Inventors: Richard E. Smalley, Ramesh Sivarajan
  • Publication number: 20030170166
    Abstract: The present invention involves fibers of highly aligned single-wall carbon nanotubes and a process for making the same. The present invention provides a method for effectively dispersing single-wall carbon nanotubes. The process for dispersing the single-wall carbon nanotubes comprises mixing single-wall carbon nanotubes with 100% sulfuric acid or a superacid, heating and stirring under an inert, oxygen-free environment. The single-wall carbon nanotube/acid mixture is wet spun into a coagulant to form the single-wall carbon nanotube fibers. The fibers are recovered, washed and dried. The single-wall carbon nanotubes were highly aligned in the fibers, as determined by Raman spectroscopy analysis.
    Type: Application
    Filed: July 2, 2002
    Publication date: September 11, 2003
    Applicant: William Marsh Rice University
    Inventors: Richard E. Smalley, Rajesh Kumar Saini, Ramesh Sivarajan, Robert H. Hauge, Virginia Angelica Davis, Matteo Pasquali, Lars Martin Ericson
  • Publication number: 20030133865
    Abstract: The present invention involves alewives of highly aligned single-wall carbon nanotubes (SWNT), process for making the same and compositions thereof. The present invention provides a method for effectively making carbon alewives, which are discrete, acicular-shaped aggregates of aligned single-wall carbon nanotubes and resemble the Atlantic fish of the same name. Single-wall carbon nanotube alewives can be conveniently dispersed in materials such as polymers, ceramics, metals, metal oxides and liquids. The process for preparing the alewives comprises mixing single-wall carbon nanotubes with 100% sulfuric acid or a superacid, heating and stirring, and slowly introducing water into the single-wall carbon nanotube/acid mixture to form the alewives. The alewives can be recovered, washed and dried. The properties of the single-wall carbon nanotubes are retained in the alewives.
    Type: Application
    Filed: July 2, 2002
    Publication date: July 17, 2003
    Applicant: William Marsh Rice University
    Inventors: Richard E. Smalley, Rajesh Kumar Saini, Ramesh Sivarajan, Robert H. Hauge, Virginia A. Davis, Matteo Pasquali, Lars Martin Ericson, Satish Kumar, Sreekumar Thaliyil Veedu