Patents by Inventor Gopinathan Sarada

Gopinathan Sarada 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 cabofuran
    Patent number: 5387702
    Abstract: A process for the preparation of carbofuran which is used as an insecticide. Carbofuran is the N-methylcarbamate of 7-benzofuranol. Carbofuran is prepared by reacting catechol with beta methallyl halide or the alcohol in the presence of a catalyst composite containing a heteropoly acid and reacting the 7-hydroxy 2, 3, dihydro-2, 2, dimethyl benzofuranol thus obtained with methyl isocyanate or with phosgene and methylamine to obtain carbofuran.
    Type: Grant
    Filed: September 29, 1993
    Date of Patent: February 7, 1995
    Assignee: Council of Scientific And Industrial Research
    Inventors: Gopinathan Changaramponnath, Gopinathan Sarada, Mitra R. Baran, Ratnasamy Paul