Patents by Inventor R. N. Datta

R. N. Datta 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).

  • Process for the Preparation of a Vulcanized Blend of Rubbers
    Publication number: 20100137519
    Abstract: This invention relates to a process for preparing a vulcanized rubber blend, said blend comprising (a) natural rubber or poly-isoprene rubber, (b) butadiene based rubber, and (c) rubber with an essentially saturated backbone. The improvement is that rubber c) is pre-heated with at least part of the vulcanization system before mixing with rubbers a) and b) and co-vulcanizing.
    Type: Application
    Filed: February 21, 2006
    Publication date: June 3, 2010
    Inventors: Jacobus Wilhelmus Maria J.W.M. Noordermeer, Nityananda L. Naskar, Rabindra Nath R.N. Datta
  • RUBBER COMPOSITION
    Publication number: 20100048775
    Abstract: A rubber composition containing 100 parts by weight of a diene-based rubber, 20 to 120 parts by weight of silica, a sulfur-containing silane coupling agent of 3 to 15% by weight, based upon the weight of the silica and a tertiary amine compound having the formula (I): wherein, R1 indicates a carbon atom or nitrogen atom and, when R1 is a carbon atom, R2 indicates a hydrogen atom or hydroxyl group and having a pKa value of 6.5 to 13.
    Type: Application
    Filed: December 19, 2007
    Publication date: February 25, 2010
    Applicant: The Yokohama Rubber Co. Ltd
    Inventors: Satoshi Mihara, R. N. Datta, A.G. Talma, J.W. Noordermeer