Patents by Inventor Ingeborg Hammen

Ingeborg Hammen 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).

  • O-alkyl-S-[1,6-dihydro-6-oxo-pyridazin(1)ylmethyl]-(thiono )-(di)-thiolphosphoric(phosphonic) acid esters
    Patent number: 4112080
    Abstract: O-Alkyl-S-[1,6-dihydro-6-oxo-pyridazin(1)ylmethyl]-(thiono)-(di)-thiolphosp horic(phosphonic) acid esters of the formula ##STR1## in which R.sub.1 is alkyl or alkoxyalkyl with 1 to 6 carbon atoms per alkyl chain,R.sub.2 is alkyl, alkylmercapto, alkylamino or alkenylamino with up to 6 carbon atoms per aliphatic chain, amino or phenyl, andR.sub.3 is alkoxy, cyanoalkoxy, carbalkoxy-alkoxy, alkenyloxy, alkynyloxy, alkanoyloxy, dialkylcarbamoyloxy or alkylsulfonyloxy with up to 5 carbon atoms in each aliphatic chain, halogen, hydroxyl, or a (thiono) (thiol)-phosphoric(phosphonic) acid ester or esteramide radical,R.sub.4 and R.sub.5 each independently is hydrogen, alkyl with 1 to 3 carbon atoms or halogen, or R.sub.4 and R.sub.5 conjointly form a fused benzene ring, andX is oxygen or sulfur,Which possess insecticidal, acaricidal and nematocidal properties.
    Type: Grant
    Filed: January 2, 1976
    Date of Patent: September 5, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolfgang Hofer, Fritz Maurer, Hans-Jochem Riebel, Lothar Rohe, Ingeborg Hammen, Bernhard Homeyer