Patents by Inventor Hak-Foon Chan
Hak-Foon Chan 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).
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Patent number: 5216007Abstract: This invention relates to substituted ethylenic imidazoles and triazoles, their enantiomorphs, acid addition salts and metal complexes as well as their methods of preparation and use as broad spectrum systemic fungicides useful in controlling phytopathogenic fungi such as barley net blotch (Helminthosporium teres), bean powdery mildew (Erysiphe polygoni), peanut cercospora (Cercospora arachidicola), and wheat stem rust (Puccinia graminis f. sp. tritici race 15B-2).Type: GrantFiled: January 15, 1992Date of Patent: June 1, 1993Assignee: Rohm and Haas CompanyInventors: George A. Miller, Hak-Foon Chan
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Patent number: 5192783Abstract: This invention relates to 1 and 4-aralkyl-1,2,4-triazoles, their enantiomorphs, acid addition salts and metal salt complexes. This invention also relates to the method of preparation and use of these compounds. These compounds are highly active broad-spectrum systemic fungicides effective in controlling phytopathogenic fungi such as barley net blotch (Helminthosporium teres), grey mold (Botrytis cinerea), bean powdery mildew (Erysiphe polygoni), grape downy mildew (Plasmopora viticola), rice blast (Piricularia oryzae), tomato late blight (Phytophthora infestans) and wheat stem rust (Puccinia graminis f. sp. tritici race 15B-2).Type: GrantFiled: September 30, 1985Date of Patent: March 9, 1993Assignee: Rohm and Haas CompanyInventors: George A. Miller, Hak-Foon Chan, Hak-Foon Chan
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Patent number: 4753957Abstract: This invention relates to substituted 2,4-imidazolidinediones, their method of preparation and use as broad spectrum systemic fungicides effective in controlling phytopathogenic fungi such as barley net blotch (Helminthosporium teres), bean powdery mildew (Erysiphi polygoni), grape downy mildew (Plasmorpora viticola), tomato late blight (Phytophthora infestans), and wheat stem rust (Puccinia graminis f. sp. tritici race 15 B-2.Type: GrantFiled: September 28, 1981Date of Patent: June 28, 1988Assignee: Rohm and Haas CompanyInventor: Hak-Foon Chan
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Patent number: 4675316Abstract: This invention relates to substituted azoylmethylarylsulfides, sulfoxides and sulfones, their agronomically acceptable acid addition salts, their method of preparation and their pesticidal use, especially their use as highly active fungicides.Type: GrantFiled: March 10, 1978Date of Patent: June 23, 1987Assignee: Rohm and Haas CompanyInventor: Hak-Foon Chan
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Patent number: 4414210Abstract: This invention relates to 2-hydroxyarylethyl-1,2,4-triazoles, their acid addition salts and metal salt complexes. This invention also relates to the method of preparation and use of these compounds. These compounds and salts thereof are highly active broad-spectrum systemic fungicides effective in controlling phytopathogenic fungi such as barley net blotch (Helminthosporium teres), grey mold (Botrytis fabae), bean powdery mildew (Erysiphe polygoni), grape downy mildew (Plasmopora viticola), rice blast (Piricularia oryzae), tomato late blight (Phytophthora infestans) and wheat stem rust (Puccinia graminis f. sp. tritici race 158-2).Type: GrantFiled: May 19, 1981Date of Patent: November 8, 1983Assignee: Rohm and Haas CompanyInventors: George A. Miller, Hak-Foon Chan
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Patent number: 4413003Abstract: This invention relates to .beta.-hydroxyarylethylimidazoles, their enantiomorphs, acid addition salts and metal salt complexes. This invention also relates to the method of preparation and use of these compounds. These compounds and salts thereof are highly active broad-spectrum systemic fungicides effective in controlling phytopathgogenic fungi such as barley net blotch (Helminthosporium teres), grey mold (Botrytis cinerea), bean powdery mildew (Erysiphe polygoni), grape downy mildew (Plasmopora viticola), rice blast (Piricularia oryzae), tomato late blight (Phytophthora infestans), and wheat stem rust (Puccinia graminis f. sp. tritici race 15B-2).Type: GrantFiled: July 29, 1977Date of Patent: November 1, 1983Assignee: Rohm and Haas CompanyInventors: George A. Miller, Hak-Foon Chan
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Patent number: 4372972Abstract: This invention relates to N-substituted alkynyl anilines, methods for their preparation and their use as systemic eradicant phytopathogenic fungicides which are useful in controlling Oomycetes.Type: GrantFiled: September 14, 1979Date of Patent: February 8, 1983Assignee: Rohm and Haas CompanyInventor: Hak-Foon Chan
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Patent number: 4366165Abstract: This invention relates to 1 and 4-arylcyanoalkyl-1,2,4-triazoles, their enantiomorphs, and acid addition salts and metal salt complexes. This invention also relates to the method of preparation and use of these compounds. These compounds enantiomorphs, salts and complexes are highly active broad-spectrum systemic fungicides effective in controlling phytopathogenic fungi such as barley net blotch (Helminthosporium teres), grey mold (Botrytis cinerea), bean powdery mildew (Erysiphe polygoni), grape downy mildew (Plasmopora viticola), rice blast (Piricularia oryzae), tomato late blight (Phytophthora infestans) and wheat stem rust (Puccinia graminis f. sp. tritici race 15B-2).Type: GrantFiled: February 11, 1981Date of Patent: December 28, 1982Assignee: Rohm and Haas CompanyInventors: George A. Miller, Hak-Foon Chan
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Patent number: 4351839Abstract: This invention relates to 2-aryl-2-1-H-azoyl-(alkyl)gamma-butyrolactone of the formula: ##STR1## wherein Z is optionally substituted aryl;R is hydrogen, alkyl, alkenyl, alkynyl, optionally substituted aryl or optionally substituted aralkyl;Azo is 1-H-imidiazoyl, 1-H-1,2,4-triazoyl or 4-H-1,2,4-triazoyl;n is zero or an integer from 1 to 5, and the agronomically acceptable acid addition salts and metal salt complexes thereof, methods for their preparation and their use as pesticides.Type: GrantFiled: March 30, 1981Date of Patent: September 28, 1982Assignee: Rohm and Haas CompanyInventor: Hak-Foon Chan
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Patent number: 4259339Abstract: This invention relates to phenoxy, phenylthio, phenylsulfinyl and phenylsulfonyl substituted cyano aralkyl imidazoles and triazoles, their enantiomorphs, acid addition salts and metal salt complexes thereof as well as their methods of preparation and use as broad spectrum systemic fungicides useful in controlling phytopathogenic fungi.Type: GrantFiled: February 28, 1979Date of Patent: March 31, 1981Assignee: Rohm and Haas CompanyInventors: George A. Miller, Hak-Foon Chan
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Patent number: 4225723Abstract: This invention relates to a process for the preparation of substituted arylcyanoalkyl and diarylcyanoalkylimidazoles, their acid addition salts and their metal salt complexes. These compounds are useful as broad spectrum protectant-eradicant fungicides.Type: GrantFiled: January 8, 1979Date of Patent: September 30, 1980Assignee: Rohm and Haas CompanyInventors: George A. Miller, Hak-Foon Chan, Harold E. Carley
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Patent number: 4182862Abstract: This invention involves an improved process for the preparation of pesticidal 1,3-disubstituted-2-azoyl-2-propen-1-ones from the corresponding dibromoketones and azoles at a temperature from about 60.degree. C. to 180.degree. C. either neat or in the presence of an inert solvent.Type: GrantFiled: October 18, 1978Date of Patent: January 8, 1980Assignee: Rohm and Haas CompanyInventor: Hak-Foon Chan
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Patent number: 4167576Abstract: This invention relates to phenoxy, phenylthio, phenylsulfinyl and phenylsulfonyl substituted cyano aralkyl imidazoles and triazoles, their enantiomorphs, acid addition salts and metal salt complexes thereof as well as their methods of preparation and use as broad spectrum systemic fungicides useful in controlling phytopathogenic fungi.Type: GrantFiled: October 6, 1977Date of Patent: September 11, 1979Assignee: Rohm and Haas CompanyInventors: George A. Miller, Hak-Foon Chan
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Patent number: 4143137Abstract: This invention relates to substituted arylcyanoalkyl and diarylcyanoalkylimidazoles, their acid addition salts and their metal salt complexes and their use as broad spectrum protectant-eradicant fungicides.Type: GrantFiled: October 6, 1977Date of Patent: March 6, 1979Assignee: Rohm and Haas CompanyInventors: George A. Miller, Hak-Foon Chan, Harold E. Carley
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Patent number: 4118461Abstract: This disclosure describes novel aralkyl imidazoles, their acid addition salts, their metal complex salts and processes for their preparation. These compounds possess biological activity and in particular are useful as systemic protectant/eradicant fungicidal agents for controlling plant diseases caused by fungi and as plant growth regulators. The metal complex salts of these compounds are particularly useful in their ability to reduce undesirable plant growth regulatory activity and phytotoxicity while retaining their ability for controlling plant diseases caused by fungi.Type: GrantFiled: November 12, 1976Date of Patent: October 3, 1978Assignee: Rohm and Haas CompanyInventors: George A. Miller, Hak-Foon Chan
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Patent number: 4079146Abstract: This invention is concerned with metal salts of mixed dithiocarbamic acids, the process for their preparation and their biological activity. In particular, these salts are useful as broad spectrum fungicidal agents.Type: GrantFiled: September 26, 1975Date of Patent: March 14, 1978Assignee: Rohm and Haas CompanyInventors: George Allen Miller, Harold Edwin Carley, Hak-Foon Chan
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Patent number: 4073921Abstract: This invention relates to substituted arylcyanoalkyl and diarylcyanoalkylimidazoles, their acid addition salts and their metal salt complexes and their use as broad spectrum protectant-eradicant fungicides.Type: GrantFiled: January 7, 1976Date of Patent: February 14, 1978Assignee: Rohm and Haas CompanyInventors: George A. Miller, Hak-Foon Chan, Harold E. Carley