Chien Wen Tseng from San Mateo, CA, age 91

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1-Hydroxy-2-(Alkylketo)-4,4,6,6-Tetramethyl Cyclohexen-3,5-Diones
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US Patent:

42028400, May 13, 1980
Filed:

Sep 29, 1978
Appl. No.:

5/947217
Inventors:

Reed A. Gray - Saratoga CA
Chien K. Tseng - El Cerrito CA
Ronald J. Rusay - Lafayette CA
Assignee:

Stauffer Chemical Company - Westport CT
International Classification:

C07C 4944
US Classification:

2604381
Abstract:

Compounds having the following structural formula ##STR1## wherein R is alkyl which are useful as herbicides.

1-Hydroxy-2-(Alkylketo)-4,4,6,6-Tetramethyl Cyclohexen-3,5-Dione Herbicides
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US Patent:

42279194, Oct 14, 1980
Filed:

Aug 6, 1979
Appl. No.:

6/064243
Inventors:

Reed A. Gray - Saratoga CA
Chien K. Tseng - El Cerrito CA
Ronald J. Rusay - Lafayette CA
Assignee:

Stauffer Chemical Company - Westport CT
International Classification:

A01N 924
US Classification:

71122
Abstract:

Compounds having the following structural formula ##STR1## wherein R is alkyl which are useful as herbicides.

Derivatives Of Certain Geranyl Phenyl Ethers
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US Patent:

39949818, Nov 30, 1976
Filed:

Jul 5, 1973
Appl. No.:

5/376787
Inventors:

Ferenc M. Pallos - Walnut Creek CA
Chien K. Tseng - El Cerrito CA
Assignee:

Stauffer Chemical Company - Westport CT
International Classification:

C07C14932
C07C 4322
US Classification:

260609F
Abstract:

Compounds having the formula ##SPC1## In which R is hydrogen, lower alkyl, lower alkenyl, lower alkoxy, halogen, nitro; or lower alkylthio; X is chlorine or bromine; A and B are each hydrogen, together form an epoxide link or together form a bond; the use of these compounds in controlling insects; and a method of preparing these compounds.

Thiolcarbamate Sulfoxides Stabilized With Acetylenic Compounds
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US Patent:

40814688, Mar 28, 1978
Filed:

Sep 8, 1976
Appl. No.:

5/721248
Inventors:

Don Robert Baker - Orinda CA
Francis Harry Walker - Mill Valley CA
Chien Knei Tseng - El Cerrito CA
Assignee:

Stauffer Chemical Company - Westport CT
International Classification:

C07C14714
A01N 914
US Classification:

260551R
Abstract:

Certain herbicidal thiolcarbamate sulfoxides can be stabilized by adding an acetylenic compound of the formula R. sub. 3 --C. tbd. C--R. sub. 4 wherein R. sub. 3 is selected from the group consisting of hydroxy, hydroxyalkyl, hydroxyalkenyl, hydroxyalkynyl, hydroxy substituted cycloalkyl, hydroxy substituted phenyl, hydroxy substituted phenalkyl, amino substituted alkyl and alkyl substituted by the group --O--C(O)-alkyl and R. sub. 4 is selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, phenyl, phenalkyl, hydroxyalkyl, hydroxyalkenyl, hydroxy cycloalkyl, hydroxy substituted phenyl, hydroxy substituted phenalkyl, amino alkyl and alkyl substituted by the group --O--C(O)-alkyl.