Patents by Inventor Ramachandran Kumar

Ramachandran Kumar 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).

  • Methods for purifying p,p-bisphenol-A
    Patent number: 7371902
    Abstract: Methods for purifying a p,p-bisphenol A generally include distilling a feed stream comprising p,p-BPA in a distillation column at a pressure less than or equal to 20 millibars. The distillation column separates the bisphenol feed stream to produce a light fraction, an intermediate fraction and a heavy fraction. The intermediate fraction comprising the purified bisphenol contains lesser impurities that the p,p-BPA in the feed stream. In one embodiment, the intermediate stream is recovered using a side-draw. The side-draw is located between a first zone and a third zone in the distillation column.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: May 13, 2008
    Assignee: General Electric Company
    Inventors: Ramachandran Kumar, Gomatam Raghavan Ravi, Hyacinth Mary Bastian, Gururaj Sathyanarayana, Sheldon Jay Shafer, Kumar Krishna Ramamurthy, Dwijaraja Mouli Murukutla, Venkata Rama Narayanan Ganapathy Bhotla
  • Automatic critical health care service system using wireless communication, positioning and/or RF ID
    Publication number: 20060073838
    Abstract: Three solutions for an automatic critical health care service system are proposed. First two solutions include a mobile phone device, a service provider system, a home hospital system and a nearest hospital system. The third solution also includes a RF ID technology based storage means. The mobile phone device comprises location measurement means, storage means, tagging means, wireless ground communication means and wireless satellite communication means; solution 3 includes RF ID reader means. The service provider system comprises storage means, wireless ground communication means, wireless satellite communication means, wired communication means, tagging means and Geographic and Health Data Retrieval Means (in solution 2 and 3 this is Geographic Data Retrieval Means). The home hospital system comprises mobile receiver means and storage means (storage only in solution 1). The nearest hospital system comprises mobile receiver means, email receiver means and fax receiver means (fax only in solution 1).
    Type: Application
    Filed: September 10, 2004
    Publication date: April 6, 2006
    Inventors: Tayeb Kamali, Hamad Odhabi, Senthil Nathan, Ramachandran Kumar
  • Methods for purifying p,p-bisphenol-A
    Publication number: 20060069292
    Abstract: Methods for purifying a p,p-bisphenol A generally include distilling a feed stream comprising p,p-BPA in a distillation column at a pressure less than or equal to 20 millibars. The distillation column separates the bisphenol feed stream to produce a light fraction, an intermediate fraction and a heavy fraction. The intermediate fraction comprising the purified bisphenol contains lesser impurities that the p,p-BPA in the feed stream. In one embodiment, the intermediate stream is recovered using a side-draw. The side-draw is located between a first zone and a third zone in the distillation column.
    Type: Application
    Filed: September 29, 2004
    Publication date: March 30, 2006
    Inventors: Ramachandran Kumar, Gomatam Ravi, Hyacinth Bastian, Gururaj Sathyanarayana, Sheldon Shafer, Kumar Ramamurthy, Dwijaraja Murukutla, G.V. Ramanarayanan