Company Filing History:

8 out of 1,008

Bayer Corporation

patents

7 out of 12,157

Bayer Aktiengesellschaft

patents

Years Active: 1996-2003

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15 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6545154 - Method for the production of N-(5-amino-2-cyano-4-fluoro-phenyl)-sulphonamides and new intermediate products (2003-04-08),

2. 6541667 - Methods for preparation of thioamides (2003-04-01),

3. 6489525 - Methods for preparing primary alkyl bromides (2002-12-03),

4. 6472535 - Oxidative hydrolysis of heteroaromatic thiones (2002-10-29),

5. 6372916 - Method for producing triazolinethione derivatives (2002-04-16),

6. 6353114 - Method for producing triazolinethione derivatives (2002-03-05),

7. 6310206 - Method for the production of N-(5-amino-2-cyano-4-fluoro-phenyl)-sulphonamides and new intermediate products (2001-10-30),

8. 6271389 - Method for producing triazolinethione derivatives (2001-08-07),

9. 6201128 - Method for producing triazolinthion derivatives (2001-03-13),

10. 6172236 - Process for preparing triazolinethione derivatives (2001-01-09),

11. 6025514 - Process for preparing methyl dithiocarbazinate by reacting methyl (2000-02-15),

12. 5973180 - Process for the production of an N-acyl derivative of O,S-dialkyl (1999-10-26),

13. 5877339 - Process for preparing methyl dithiocarbazinate by reacting methyl (1999-03-02),

14. 5808152 - Synthesis of N-(4-fluorophenyl)-2-hydroxy-N-(1-methylethyl)acetamide (1998-09-15),

15. 5502190 - Process for the production of dialkyl pyrimidylphosphates (1996-03-26),

Title: The Innovative Contributions of David T Erdman

Introduction

David T Erdman is a notable inventor based in Kansas City, MO, with a remarkable portfolio of 15 patents. His work primarily focuses on chemical processes and compounds, showcasing his expertise in the field of chemistry and innovation.

Latest Patents

One of Erdman's latest patents is titled "Method for the production of N-(5-amino-2-cyano-4-fluoro-phenyl)-sulphonamides and new intermediate products." This invention details a process for preparing N-(5-amino-2-cyano-4-fluoro-phenyl)-sulphonamides, which involves a two-step reaction. In the first step, 2-amino-4,5-difluoro-benzonitrile is reacted with sulphonyl halides in the presence of an acid acceptor and a diluent at temperatures ranging from 0°C to 150°C. The second step involves reacting the resulting compounds with ammonia in the presence of a diluent at temperatures between 100°C and 200°C. This patent also introduces novel intermediates that enhance the efficiency of the process.

Career Highlights

Throughout his career, David T Erdman has made significant contributions to the field of chemistry. He has worked with prominent companies such as Bayer Corporation and Bayer Aktiengesellschaft, where he has applied his innovative ideas to develop new chemical processes and products.

Collaborations

Erdman has collaborated with esteemed colleagues, including Manfred Jautelat and Peter E Newallis. These partnerships have further enriched his work and contributed to the advancement of chemical innovations.

Conclusion

David T Erdman's contributions to the field of chemistry through his patents and collaborations highlight his role as a significant inventor. His innovative methods and processes continue to impact the industry positively.

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Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.