ROY Y YIH
Real Estate Commission in Gardenville, PA

4330324, May 18, 1982

Jan 14, 1980

6/111560

Horst O. Bayer - Levittown PA
Colin Swithenbank - Perkasie PA
Roy Y. Yih - Doylestown PA

Rohm and Haas Company - Philadelphia PA

A01N 3734, C07C12175

71105

Compounds of the formula ##STR1## wherein X is a cyano group, Y is a hydrogen atom, a halogen atom, or a trihalomethyl group, and Z is a substituted alkoxy group, and compositions containing these compounds exhibit herbicidal activity.

RE31731, Nov 13, 1984

Sep 1, 1978

5/939291

Horst O. Bayer - Levittown PA
Colin Swithenbank - Perkasie PA
Roy Y. Yih - Doylestown PA

C07C 7946

562435

Compounds of the formula ##STR1## wherein X is a hydrogen atom, a halogen atom, a trihalomethyl group, an alkyl group, or a cyano group, Y is a hydrogen atom, or a trihalomethyl group, and Z is an alkoxy group, an alkoxyalkoxy group, a hydroxyalkoxy group, an alkyl group, a halogen atom, an alkylamino group, a dialkylamino group, an alkylthio group, a carboxy group, a carbalkoxy group, a carboxyalkoxy group, a carbalkoxyalkoxy group, a carboxyalkyl group, a carbalkoxyalkyl group, a dialkylureido group, an alkanoylamino group, or carbalkoxyamino group, and compositions containing these compounds exhibit herbicidal activity.

4220468, Sep 2, 1980

Feb 27, 1978

5/881227

Horst O. Bayer - Levittown PA
Colin Swithenbank - Perkasie PA
Roy Y. Yih - Doylestown PA

Rohm and Haas Company - Philadelphia PA

C07C 4322, A01N 924

71124

Compounds of the formula ##STR1## wherein X is a hydrogen atom, a halogen atom, a trihalomethyl group, or an alkyl group, Y is a hydrogen atom, a halogen atom, or a trihalomethyl group, and Z is a substituted alkoxy group, and compositions containing these compounds exhibit herbicidal activity.

4445930, May 1, 1984

Sep 16, 1981

6/302921

Horst O. Bayer - Levittown PA
Colin Swithenbank - Perkasie PA
Roy Y. Yih - Doylestown PA

Rohm and Haas Company - Philadelphia PA

A01N 920

71105

Compounds of the formula ##STR1## wherein X is a hydrogen atom, a halogen atom, a trihalomethyl group, an alkyl group, or a cyano group, Y is a hydrogen atom, a halogen atom, or a trihalomethyl group, and Z is a hydroxy group, an alkoxy group, and alkyl group, a halogen atom, an amino group, an alkylthio group, a cyano group, a carboxy group, a carbalkoxy group, a carboxyalkyl group, an carbalkoxyalkyl group, an alkanoyloxy group, or a carbamoyloxy group, and compositions containing these compounds exhibit herbicidal activity.

4063929, Dec 20, 1977

Sep 29, 1975

5/617560

Horst O. Bayer - Levittown PA
Colin Swithenbank - Perkasie PA
Roy Y. Yih - Doylestown PA

Rohm and Haas Company - Philadelphia PA

C07C 6514, A01N 924

71115

Salts of compounds of the formula ##STR1## wherein X is a hydrogen atom, a halogen atom, a trihalomethyl group, an alkyl group, or a cyano group, and Y is a hydrogen atom, a halogen atom, or a trihalomethyl group, And compositions containing these salts exhibit herbicidal activity.

4515988, May 7, 1985

Sep 16, 1981

6/302916

Horst O. Bayer - Levittown PA
Colin Swithenbank - Perkasie PA
Roy Y. Yih - Doylestown PA

Rohm and Haas Company - Philadelphia PA

C07C 43263

568586

Compounds of the formula ##STR1## wherein X is a hydrogen atom, a halogen atom, a trihalomethyl group, an alkyl group, or a cyano group, Y is a hydrogen atom, a halogen atom, or a trihalomethyl group, and Z is a hydroxy group, an alkoxy group, an alkyl group, a halogen atom, an amino group, an alkylthio group, a cyano group, a carboxy group, a carbalkoxy group, a carboxyalkyl group, a carbalkoxyalkyl group, an alkanoyloxy group, or a carbamoyloxy group, and compositions containing these compounds exhibit herbicidal activity.

4083713, Apr 11, 1978

Mar 14, 1975

5/558568

Roy Y. Yih - Doylestown PA
Wayne O. Johnson - Warminster PA
Gerald E. Kollman - Chalfont PA

Rohm and Haas Company - Philadelphia PA

A01N 922

71 92

This invention relates to the selective herbicidal activity of fluoroaminopyridazines. In particular, these compounds exhibit preemergence and postemergence herbicidal activity on many of the major weeds including perennial weeds such as nutsedge and quackgrass. These compounds are particularly effective in selectively controlling weeds in agronomic crops.

4422868, Dec 27, 1983

Sep 16, 1981

6/302922

Horst O. Bayer - Levittown PA
Colin Swithenbank - Perkasie PA
Roy Y. Yih - Doylestown PA

Rohm and Haas Company - Philadelphia PA

A01N 3900, A01N 3734, C07C12175, C07C14900

71 98

Compounds of the formula ##STR1## wherein X is a hydrogen atom, a halogen atom, a trihalomethyl group or an alkyl group. Y is a hydrogen atom, a halogen atom, or a trihalomethyl group, and Z is a cyano group or a (C. sub. 1 -C. sub. 4) alkylthio group and compositions containing these compounds exhibit herbicidal activity.

4613360, Sep 23, 1986

Sep 16, 1981

6/302895

Horst O. Bayer - Levittown PA
Colin Swithenbank - Perkasie PA
Roy Y. Yih - Doylestown PA

Rohm and Haas Company - Philadelphia PA

C07C 7934, C07C 43263, A01N 3100

71124

Compounds of the formula ##STR1## wherein X is a hydrogen atom, a halogen atom, a trihalomethyl group, an alkyl group, or a cyano group, Y is a hydrogen atom, a halogen atom, or a trihalomethyl group, and Z is a substituted alkoxy group, and compositions containing these compounds exhibit herbicidal activity.

4594100, Jun 10, 1986

Sep 16, 1981

6/302948

Horst O. Bayer - Levittown PA
Colin Swithenbank - Perkasie PA
Roy Y. Yih - Doylestown PA

Rohm and Haas Company - Philadelphia PA

A01N 3114

71124

Compounds of the formula ##STR1## wherein X is a hydrogen atom, a halogen atom, a trihalomethyl group, an alkyl group, or a cyano group, Y is a hydrogen atom, a halogen atom, or a trihalomethyl group, and Z is a hydroxy group, an alkoxy group, an alkyl group, a halogen atom, an amino group, an alkylthio group, a cyano group, a carboxy group, a carbalkoxy group, a carboxyalkyl group, a carbalkoxyalkyl group, an alkanoyloxy group, or a carbamoyloxy group, and compositions containing these compounds exhibit herbicidal activity.