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For the Inventor, By the Inventor

Wuppertal, Germany

Christa Fest

USPTO Granted Patents = 50

Average Co-Inventor Count = 6.7

ph-index = 5

Forward Citations = 72(Granted Patents)

Forward Citations (Not Self Cited) = 55(Oct 12, 2025)


Inventors with similar research interests:


Company Filing History:

goldMedal50 out of 12,157 
 
Bayer Aktiengesellschaft
 patents

Years Active: 1977-1994

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50 patents (USPTO):Explore Patents
1. 5328896 - Preparing herbicidal sulphonylurea salts (1994-07-12),
2. 5221317 - Herbicidal sulphonylaminoguanidinoazines (1993-06-22),
3. 5217522 - Herbicidal sulphonylguanidinoazines (1993-06-08),
4. 5213608 - Herbicidal substituted sulphonylamidinohydrazones (1993-05-25),
5. 5211740 - Herbicidal aminoguanidinoazines (1993-05-18),
6. 5167692 - Herricidal substituted sulphonylamidinohydrazones (1992-12-01),
7. 5125960 - Herbicidal substituted arylsulphonylaminoguanidinoazines (1992-06-30),
8. 5092917 - Herbicidal aminoguanidinoazines (1992-03-03),
9. 5091529 - Herbicidal substituted sulphonylaminoazoles (1992-02-25),
10. 5021082 - Herbicidal substituted sulphonylaminoazoles (1991-06-04),
11. 4990637 - 1-benzylsulphonyl-3-heteroaryl-(thio)urea herbicides (1991-02-05),
12. 4988379 - Sulphonyliso(thio)urea derivatives as herbicides (1991-01-29),
13. 4952233 - Herbicidal sulphonylaminoguanidinoazines (1990-08-28),
14. 4941912 - Herbicidal substituted sulphonylaminoazoles (1990-07-17),
15. 4931465 - Benzaldoxime carbamate derivatives (1990-06-05),

Title: Christa Fest: Innovator in Herbicidal Chemistry

Introduction: Christa Fest, a prominent inventor based in Wuppertal, Germany, has made significant contributions to the field of herbicidal chemistry. With an impressive portfolio of 50 patents, his work continues to impact agricultural practices and pest management.

Latest Patents: Among Christa Fest's latest innovations are two notable patents:

1. **Preparing herbicidal sulphonylurea salts** - This patent presents a herbicidal sulphonylurea salt of a specific formula, where M represents an alkali metal ion or the counterion derived from protonating a basic organic nitrogen compound.

2. **Herbicidal sulphonylaminoguanidinoazines** - This innovation involves herbicidally active sulphonylamino guanidinoazines characterized by a formula where R stands for a radical that may be optionally substituted and derived from categories such as alkyl, aralkyl, aryl, and hetaryl.

Career Highlights: Christa Fest currently works at Bayer Aktiengesellschaft, a leading global company in the agriculture sector. His extensive knowledge and expertise have earned him recognition in the field, paving the way for advancements in herbicide development.

Collaborations: Throughout his career, Christa Fest has collaborated with esteemed colleagues like Hans-Jochem Riebel and Klaus-Helmut Muller. Their joint efforts exemplify the spirit of innovation within Bayer Aktiengesellschaft, contributing to the development of effective agricultural solutions.

Conclusion: Christa Fest's dedication to innovation in herbicidal chemistry is evident through his numerous patents and collaborative efforts. As agricultural demands evolve, his contributions will continue to shape the future of pest management and crop protection.

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