Patents by Inventor David I. Lerner

David I. Lerner 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).

  • Synthesis of methyl N-methylanthranilate
    Patent number: 4633009
    Abstract: Methyl N-methylanthranilate is prepared by reductive alkylation of methylanthranilate with formaldehyde and hydrogen in the presence of a hydrogenation catalyst and an acid catalyst.
    Type: Grant
    Filed: June 18, 1985
    Date of Patent: December 30, 1986
    Assignee: Frizsche Dodge & Olcott Inc.
    Inventor: David I. Lerner
  • Process for the manufacture of 3,6-dialkyl resorcylic acid esters
    Patent number: 4339593
    Abstract: Dialkyl-substituted .beta.-resorcylic acid esters having the structure: ##STR1## wherein each of R.sub.1, R.sub.2, and R.sub.3 is lower alkyl may be readily prepared by reacting the corresponding dihydroresorcylic acid esters with sulfuryl chloride. These compounds, particularly, methyl 3,6-dimethyl-resorcylate and methyl 3-ethyl-6-methyl-resorcylate, have oakmoss-like odors rendering them valuable as perfume ingredients.
    Type: Grant
    Filed: December 16, 1980
    Date of Patent: July 13, 1982
    Assignee: Fritzsche Dodge & Olcott Inc.
    Inventors: Brian J. Willis, David I. Lerner, Derek H. R. Barton