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For the Inventor, By the Inventor

Doylestown, PA, United States of America

Hak-Foon Chan

USPTO Granted Patents = 17

Average Co-Inventor Count = 1.7

ph-index = 7

Forward Citations = 177(Granted Patents)


Location History:

  • Doylestown, PA (US) (1978 - 1993)
  • Walnut Creek, CA (US) (1988 - 1993)

Company Filing History:

goldMedal17 out of 3,395 
 
Rohm and Haas Company
 patents

Years Active: 1978-1993

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17 patents (USPTO):Explore Patents
1. 5216007 - Substituted ethylene imidazole and triazoles (1993-06-01),
2. 5192783 - 1-aralkyl-1,2,4-triazoles (1993-03-09),
3. 4753957 - Substituted 2,4-imidazolidinediones and fungicidal compositions (1988-06-28),
4. 4675316 - Substituted azoylmethylarylsulfides and derivatives and pesticidal use (1987-06-23),
5. 4414210 - 2-Hydroxyarylethyltriazole fungicides (1983-11-08),
6. 4413003 - .beta.-Hydroxyarylethylimidazoles (1983-11-01),
7. 4372972 - N-Substituted alkynyl anilines (1983-02-08),
8. 4366165 - 1 and 4-Arylcyanoalkyl-1,2,4-triazoles and fungicidal use (1982-12-28),
9. 4351839 - Fungicidal 2-aryl-2-1-H-azoyl-(alkyl)-gamma-butyrolactones (1982-09-28),
10. 4259339 - Cyanoaralkylheterocyclic compounds (1981-03-31),
11. 4225723 - Process for the preparation of substituted arylcyanoalkyl and diaryl (1980-09-30),
12. 4182862 - Process for the preparation of 1,3-disubstituted-2-azoyl-2-propen-1-ones (1980-01-08),
13. 4167576 - Cyanoaralkylheterocyclic compounds (1979-09-11),
14. 4143137 - Substituted arylcyanoalkyl and diarylcyanoalkylimidazole metal salt (1979-03-06),
15. 4118461 - 1-Substituted aralkyl imidazoles (1978-10-03),

Title: Hak-Foon Chan: Innovator in Systemic Fungicides

Introduction

Hak-Foon Chan is a notable inventor based in Doylestown, PA (US). He has made significant contributions to the field of systemic fungicides, holding a total of 17 patents. His work focuses on developing compounds that effectively control various phytopathogenic fungi.

Latest Patents

Among his latest patents, Chan has developed substituted ethylene imidazole and triazoles. This invention relates to substituted ethylenic imidazoles and triazoles, their enantiomorphs, acid addition salts, and metal complexes. These compounds are utilized as broad-spectrum systemic fungicides, effective in controlling diseases such as barley net blotch, bean powdery mildew, peanut cercospora, and wheat stem rust. Another significant patent involves 1-aralkyl-1,2,4-triazoles. This invention pertains to 1 and 4-aralkyl-1,2,4-triazoles, their enantiomorphs, acid addition salts, and metal salt complexes. These compounds are also highly active broad-spectrum systemic fungicides, effective against various fungi including grey mold, grape downy mildew, rice blast, and tomato late blight.

Career Highlights

Hak-Foon Chan is associated with Rohm and Haas Company, where he has been instrumental in advancing research and development in fungicides. His innovative approaches have led to the creation of effective solutions for agricultural challenges.

Collaborations

Chan has collaborated with notable coworkers such as George A. Miller and Harold E. Carley. Their combined expertise has contributed to the success of various projects within the company.

Conclusion

Hak-Foon Chan's contributions to the field of systemic fungicides demonstrate his commitment to innovation and agricultural advancement. His patents reflect a deep understanding of phytopathogenic fungi and the need for effective control measures.

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