Patents by Inventor Ravi K. Varma

Ravi K. Varma 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).

  • 16.alpha.-ARYLCARBONYLPREGNENES
    Patent number: 3976638
    Abstract: Topical and systemic anti-inflammatory activity is exhibited by steroids having the formula ##SPC1##And the 1,2-dehydro derivatives thereof, wherein R.sub.1 is phenyl, naphthyl, or substituted phenyl or naphthyl.
    Type: Grant
    Filed: October 29, 1975
    Date of Patent: August 24, 1976
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Ravi K. Varma, Christopher M. Cimarusti
  • 3,20-Diketopregnenes having an 11.beta.-acetal group
    Patent number: 3976637
    Abstract: 3,20-Diketopregnenes having in the 11.beta.-position a group of the formula ##SPC1##Wherein R.sub.1 is alkyl and R.sub.2 is hydrogen, alkyl, alkoxy, or halogen, and having a cyclic 16,17-acetal or ketal group, have useful anti-inflammatory activity.
    Type: Grant
    Filed: September 8, 1975
    Date of Patent: August 24, 1976
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Ravi K. Varma, Christopher M. Cimarusti
  • Steroidal (16.alpha.,17-d)cyclohexenes
    Patent number: 3944584
    Abstract: A series of novel steroidal[ 16.alpha., 17-d]cyclohexenes having a 9-fluoro group is disclosed herein for use as anti-inflammatory agents.
    Type: Grant
    Filed: February 3, 1975
    Date of Patent: March 16, 1976
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Sam T. Chao, Christopher M. Cimarusti, Ravi K. Varma
  • Steroidal[16.alpha.,17-.beta.]naphthalenes
    Patent number: 3937720
    Abstract: Novel steroids having the structure ##SPC1##And the 1,2-dehydro derivatives thereof, wherein R.sub.1 is chlorine, fluorine, or hydroxy and R'.sub.1 is hydrogen or R.sub.1 and R'.sub.1 together are =0; R.sub.2 is hydrogen or halogen; R.sub.3 is hydrogen, methyl, or fluorine; R.sub.4 is hydrogen, hydroxy, ##EQU1## or halogen; R.sub.5 and R.sub.6 are the same or different and are hydrogen, alkyl, alkylthio, alkoxy, carboalkoxy, formyl, ##EQU2## hydroxy, halogen, phenyl or cyano, with the proviso that when R.sub.5 and R.sub.6 are different, one of R.sub.5 and R.sub.6 is hydrogen.
    Type: Grant
    Filed: November 25, 1974
    Date of Patent: February 10, 1976
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Ravi K. Varma, Christopher M. Cimarusti