Patents by Inventor Adolph H. Philipp

Adolph H. Philipp 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).

  • Fused .gamma.-pyrone-2-carboxylic acid derivatives and process therefor
    Patent number: 4105778
    Abstract: Compounds of formula 1 ##STR1## in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are the same or different selected from the group consisting of hydrogen, halogen, nitro, trifluoromethyl, lower alkyl and lower alkoxy, or R.sup.1 and R.sup.2, R.sup.2 and R.sup.3, or R.sup.3 and R.sup.4 together form a CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 chain and R.sup.3 and R.sup.4, R.sup.1 and R.sup.4 and R.sup.1 and R.sup.2, respectively, are as defined above, R.sup.5 is hydrogen, lower alkyl or a radical of formula --Alk--OR.sup.6 wherein Alk is an alkylene selected from the group consisting of CR.sup.7 R.sup.8, CR.sup.7 R.sup.8 CR.sup.9 R.sup.10, CR.sup.7 R.sup.8 CR.sup.9 R.sup.10 CR.sup.11 R.sup.12 and CR.sup.7 R.sup.8 CR.sup.9 R.sup.10 CR.sup.11 R.sup.12 CR.sup.13 R.sup.14 wherein each of R.sup.7, R.sup.8, R.sup.9, R.sup.10, R.sup.11, R.sup.12, R.sup.13 and R.sup.14 is hydrogen or lower alkyl and R.sup.6 is hydrogen or lower alkyl; R.sup.15 is hydrogen or lower alkyl; X is O, S, SO or SO.sub.2 ; Y is O or NR.sup.
    Type: Grant
    Filed: September 8, 1977
    Date of Patent: August 8, 1978
    Assignee: Ayerst, McKenna & Harrison, Ltd.
    Inventors: Adolph H. Philipp, Ivo L. Jirkovsky