Patents by Inventor Malladi Sairam

Malladi Sairam 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 preparation of cinnamates using polyaniline salts as catalysts
    Patent number: 6982345
    Abstract: The present invention relates to a process for preparation of cinnamates using polyaniline salts as catalysts. The present invention more particularly relates to a process for producing cinnamic esters by the direct esterification of cinnamic acid with aliphatic alcohols over polyaniline salts as catalysts. The process of esterification may be carried out by reacting cinnamic acid with aliphatic mono hydric alcohol in presence of catalyst, removing the catalyst by conventional methods. The ester can be isolated such as filtration followed by isolation of esters by conventional column chromatography using adsorbent such as silica gel and solvent such as chloroform, ethylacetate, hexane and mixture there off.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: January 3, 2006
    Assignee: Council of Scientific & Industrial Research
    Inventors: Srinivasan Palaniappan, Malladi Sairam
  • Process for preparation of cinnamates using polyaniline salts as catalysts
    Publication number: 20040049068
    Abstract: The present invention relates to a process for preparation of cinnamates using polyaniline salts as catalysts. The present invention more particularly relates to a process for producing cinnamic esters by the direct esterification of cinnamic acid with aliphatic alcohols over polyaniline salts as catalysts.
    Type: Application
    Filed: February 13, 2002
    Publication date: March 11, 2004
    Inventors: Srinivasan Palaniappan, Malladi Sairam