Patents by Inventor Shahuraj Hanamantrao Kadam

Shahuraj Hanamantrao Kadam 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 hydroquinones
    Patent number: 8846982
    Abstract: The invention relates to a process for the preparation of a hydroquinone compound of formula (I) wherein R2, R3, R5 and R6 have the meaning according to claim 1, with the steps of formylating a substituted phenol and oxidizing the resulting substituted 4-hydroxy-benzaldehyde under acidic conditions to the corresponding hydroquinone of formula (I). Another object of the invention concerns the intermediate 2,3,5-trimethyl-4-hydroxy-benzaldehyde for synthesis of 2,3,5-trimethyl-hydroquinone (TMHQ) and (dl)?-tocopherol.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: September 30, 2014
    Assignee: Merck Patent GmbH
    Inventors: Shahuraj Hanamantrao Kadam, Shashikumar Paknikar
  • Process for the preparation of hydroquinones
    Publication number: 20130211149
    Abstract: The invention relates to a process for the preparation of a hydroquinone compound of formula (I) wherein R2, R3, R5 and R6 have the meaning according to claim 1, with the steps of formylating a substituted phenol and oxidising the resulting substituted 4-hydroxy-benzaldehyde under acidic conditions to the corresponding hydroquinone of formula (I). Another object of the invention concerns the intermediate 2,3,5-trimethyl-4-hydroxy-benzaldehyde for synthesis of 2,3,5-trimethyl-hydroquinone (TMHQ) and (dl)?-tocopherol.
    Type: Application
    Filed: March 17, 2011
    Publication date: August 15, 2013
    Applicant: MERCK PATENT GMBH
    Inventors: Shahuraj Hanamantrao Kadam, Shashikumar Paknikar