Company Filing History:

9 out of 1,384

Schering Aktiengesellschaft

patents

2 out of 161

Hoechst Schering Agrevo Gmbh

Schering Agrochemicals Limited

patents

Years Active: 1990-1997

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13 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5668278 - Bicyclic pyrazolo compounds (1997-09-16),

2. 5556986 - Pyrazole hydrazine compounds (1996-09-17),

3. 5502028 - Herbicidal pyrimidinyl or triazinyl haloacetic acid derivatives (1996-03-26),

4. 5424443 - Substituted benzothiazole derivatives, their preparation and use as (1995-06-13),

5. 5405829 - Substituted pyrazolypyrazoles and their use as herbicides (1995-04-11),

6. 5270289 - Herbicidal dimethoxy pyrimidinyloxy-fluorinated acids and salts (1993-12-14),

7. 5238907 - Substituted 2-pyrimidinyl-acetic acid derivatives, and their use as (1993-08-24),

8. 5098465 - 2-triazinylacetics acid derivatives, and their use as herbicides, (1992-03-24),

9. 5094682 - 1-methoxypyrimidinyl-N-nitrophenyl-1H-1,2,4-triazole-3-sulphonamides and (1992-03-10),

10. 5089044 - Substituted pyrimidinyloxy(thio)- and triazinyloxy (thio)acrylic acid (1992-02-18),

11. 4959094 - 1-chloropyrimidinyl-1H-1,2,4-triazole-3-sulphonamides as herbicides (1990-09-25),

12. 4943310 - Cyclohexenecarboxylic acid derivatives as plant growth regulants (1990-07-24),

13. 4925481 - Substituted bicyclic triazole herbicides (1990-05-15),

Title: Gerhard Johann: Innovator in Pyrazolo Compounds

Introduction

Gerhard Johann is a notable inventor based in Berlin, Germany. He has made significant contributions to the field of chemistry, particularly in the development of pyrazolo compounds. With a total of 13 patents to his name, Johann's work has had a considerable impact on herbicide technology.

Latest Patents

Among his latest patents, Johann has developed innovative bicyclic pyrazolo compounds. These compounds are characterized by a general formula (I) where R.sup.1, R.sup.2, R.sup.3, R.sup.4, and R.sup.5 have specific meanings as described in his patent documentation. The invention details processes for their preparation, intermediates, and their application as herbicides. Additionally, he has worked on pyrazole hydrazine compounds, which share similar characteristics and applications in herbicide technology.

Career Highlights

Throughout his career, Gerhard Johann has been associated with prominent companies such as Schering Aktiengesellschaft and Hoechst Schering Agrevo GmbH. His work in these organizations has allowed him to advance his research and contribute to the development of effective agricultural solutions.

Collaborations

Johann has collaborated with notable colleagues in his field, including Richard Rees and Peter Wegner. These partnerships have fostered innovation and have been instrumental in the success of his projects.

Conclusion

Gerhard Johann's contributions to the field of pyrazolo compounds and herbicide technology are noteworthy. His extensive patent portfolio and collaborations highlight his role as a significant innovator in chemistry.

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