Patents by Inventor Robert G. Stein

Robert G. Stein 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).

  • Erythromycin A silylated compounds and method of use
    Patent number: 4640910
    Abstract: Novel O-alkylsilyl derivatives of macrolide antibiotics are disclosed. These compounds have markedly superior taste properties when compared to the corresponding parent compounds.
    Type: Grant
    Filed: November 12, 1985
    Date of Patent: February 3, 1987
    Assignee: Abbott Laboratories
    Inventors: Hermann Faubl, Robert G. Stein
  • Ovicides
    Patent number: 4318920
    Abstract: It has been found that substituted aminoacetonitriles of the structure ##STR1## wherein X and Y, independently, stand for hydrogen, halogen, loweralkyl, loweralkyloxy, nitro or CF.sub.3 ; R is hydrogen or methyl; and R' is hydrogen or loweralkyl are excellent insect ovicides.
    Type: Grant
    Filed: February 8, 1979
    Date of Patent: March 9, 1982
    Assignee: Abbott Laboratories
    Inventor: Robert G. Stein
  • Molluscicide compositions and methods of use
    Patent number: 4238484
    Abstract: This invention provides a method for the control of mollusks by treating said mollusk or its habitat with a synergistic composition including O,O-dialkyl-O-(3-benzothienglyoxylonitrile oximino)phosphate of the structure ##STR1## wherein each R is an alkyl group of 1-4 carbon atoms and at least one other known molluscicide.
    Type: Grant
    Filed: April 27, 1979
    Date of Patent: December 9, 1980
    Assignee: Abbott Laboratories
    Inventors: Robert G. Stein, Terry L. Couch, Aldo J. Crovetti
  • Ovicides
    Patent number: 4200654
    Abstract: It has been found that compounds of the structure ##STR1## wherein X is O, S or SO.sub.2, R represents H or one or more halogen, loweralkyl, --CH.dbd.CH--CH.dbd.CH--, CN, NO.sub.2, loweralkyloxy, loweralkylcarbonyl or loweralkylmercapto, R' is H, loweralkyl, benzyl or R", and R" is CH.sub.2 C.tbd.CH, CMe.sub.2 C.tbd.CH or CHMeC.tbd.CH are excellent insect ovicides.
    Type: Grant
    Filed: November 24, 1978
    Date of Patent: April 29, 1980
    Assignee: Abbott Laboratories
    Inventors: Robert G. Stein, Terry L. Couch, Raymond J. Michaels
  • Herbicides derived from dihalo isonicotinoyl derivatives of amino acids
    Patent number: 4195984
    Abstract: New agriculturally useful compounds are described which are the 2,6-dibromo- or -dichloro- iso- nicotinoyl derivatives of aminoacids.
    Type: Grant
    Filed: March 12, 1979
    Date of Patent: April 1, 1980
    Assignee: Abbott Laboratories
    Inventors: Robert G. Stein, Donald S. Kenney
  • Certain ovicidal piperazines
    Patent number: 4180574
    Abstract: It has been found that compounds of the structure ##STR1## wherein "pyr" stands for 2-, 3-, or 4-pyridyl; Z is CO or (CH.sub.2).sub.n ; n is 0, 1 or 2; R is hydrogen, halogen, loweralkyl, loweralkyloxy, nitro, or hydroxymethyl; and R' is hydrogen or halogen are excellent insect ovicides.
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: December 25, 1979
    Assignee: Abbott Laboratories
    Inventor: Robert G. Stein
  • Insecticidal pyrazole-4-methanol esters
    Patent number: 4151293
    Abstract: Compounds of the formula ##STR1## wherein R is phenyl, benzyl, 1-isopropylbenzyl wherein each of said aromatic rings may carry a chlorine substituent, ##STR2## R' is H, --C.tbd.N or --C.tbd.CH; R" is chlorine, bromine, fluorine or methyl; X and Y both but independently are H or loweralkyl; and Z is phenyl or benzyl which may carry an optional aromatic chlorine substituent, have been found to be excellent insecticides, ovicides and/or miticides.
    Type: Grant
    Filed: October 23, 1978
    Date of Patent: April 24, 1979
    Assignee: Abbott Laboratories
    Inventor: Robert G. Stein