Company Filing History:

24 out of 12,157

Bayer Aktiengesellschaft

patents

7 out of 343

Deutsche Gold- Und Silber-scheideanstalt Vormals Roessler

where one patent can have more than one assignee

Years Active: 1977-2003

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24 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6667401 - Method for producing heterocyclic compounds (2003-12-23),

2. 6211379 - Process for preparing heterocyclic compounds (2001-04-03),

3. 6124504 - Process for preparing 4-hydroxyanilines (2000-09-26),

4. 5948930 - Process for preparing O-alkyl, O-alkylphosphorochloridothioates (1999-09-07),

5. 5162529 - Process for the preparation of 5-hydroxy-3,4,5,6-tetrahydro-pyrimidine (1992-11-10),

6. 4537730 - Preparation of O,S-dimethyl-thiolophosphoric acid amide (1985-08-27),

7. 4387252 - Process for the preparation of polyhydric phenols (1983-06-07),

8. 4369096 - Process for the purification of epoxides (1983-01-18),

9. 4360682 - Stabilizing caprolactones with dihydroxybenzenes (1982-11-23),

10. 4344897 - Process for the preparation of percarboxylic acid solutions (1982-08-17),

11. 4341709 - Preparation of .epsilon.-caprolactone (1982-07-27),

12. 4324925 - Process for the preparation of polyhydric phenols (1982-04-13),

13. 4214105 - Process for the hydroxylation of phenol (1980-07-22),

14. 4212809 - Process for the preparation of 5-(oxiranylmethyl)-1,3-benzodioxole (1980-07-15),

15. 4182918 - Process for the preparation of polyhydric phenols (1980-01-08),

Title: Hermann Seifert - Innovator in Heterocyclic Compounds

Introduction

Hermann Seifert is a notable inventor based in Cologne, Germany, recognized for his significant contributions to the field of chemistry with a total of 24 patents to his name. His work primarily focuses on the development and preparation of heterocyclic compounds, which play a crucial role in various chemical applications.

Latest Patents

Among his recent innovations, Seifert has developed a method for producing heterocyclic compounds. This process includes specific procedures for preparing compounds of the formula (I), which showcases his expertise in synthetic chemistry and innovation.

Career Highlights

Throughout his career, Hermann Seifert has worked with prominent companies such as Bayer Aktiengesellschaft and Deutsche Gold- und Silber-Scheideanstalt Vormals Roessler. His tenure at these institutions has significantly contributed to his knowledge and experience in chemical innovation and patent development.

Collaborations

Seifert has collaborated with esteemed professionals in the industry, including Helmut Waldmann and Wolfgang Swodenk. These partnerships have enabled him to further enhance his research capabilities and foster advancements in the chemical field.

Conclusion

Hermann Seifert's dedicated work in the realm of heterocyclic compounds has established him as a key figure in the field of chemistry. His extensive patent portfolio reflects his commitment to innovation and his impact on the industry. As he continues to explore new methodologies and processes, his contributions will undoubtedly shape the future of chemical research.

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