Company Filing History:

8 out of 759

Rhone-poulenc Chimie

patents

2 out of 460

Rhodia Chimie

patents

Years Active: 1990-2001

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10 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6225502 - Use of an aniline depleted in electron to release hydrochloric acid present in a reaction mixture and method for displacing, at least partially, an aniline from its chlorhydrate (2001-05-01),

2. 6194616 - Acylation method for an aromatic compound (2001-02-27),

3. 5786520 - O-alkylation of phenolic compounds via rare earth orthophosphate (1998-07-28),

4. 5670659 - Preparation of citraconic anhydride (1997-09-23),

5. 5132468 - C-alkylation of hydroquinone or monoethers thereof (1992-07-21),

6. 5118651 - Chemical compound containing alkali metals or alkaline earth metals, (1992-06-02),

7. 5019657 - Process for the preparation of halophenols (1991-05-28),

8. 5001280 - Preparation of phenol by direct hydroxylation of benzene (1991-03-19),

9. 4982013 - Preparation of polyhydroxybenzenes by direct hydroxylation of phenols (1991-01-01),

10. 4950811 - Process for the preparation of trifluoro-ethanol by hydrolysis, in the (1990-08-21),

Title: The Innovative Contributions of Philippe-Jean Tirel

Introduction

Philippe-Jean Tirel, based in Oullins, France, is a notable inventor with a portfolio of 10 patents to his name. His work primarily focuses on organic synthesis, showcasing his deep understanding of chemical processes and methodologies.

Latest Patents

Among his recent contributions, Tirel has developed a method that utilizes an aniline depleted in electrons to release hydrochloric acid present in a reaction mixture. This innovative technique involves displacing an aniline from its chlorhydrate, particularly focusing on anilines where the conjugate acid has a pKa not more than 6. The process entails subjecting the aniline to a temperature of at least 50°C, preferably around 70°C, within a reaction medium containing the chlorhydrate dissolved in a weakly polar solvent. This invention promises significant applications in organic synthesis.

Another notable patent from Tirel includes an acylation method for an aromatic compound, further emphasizing his expertise in chemical reactions and their industrial applications.

Career Highlights

Philippe-Jean Tirel has had a distinguished career, contributing his innovative skills at prominent companies such as Rhone-Poulenc Chimie and Rhodia Chimie. His work within these organizations has been instrumental in advancing chemical technologies and fostering new methods in the field.

Collaborations

Tirel has collaborated with esteemed colleagues, including Michel Gubelmann and Claude Doussain, enhancing the collaborative spirit of innovation within the chemical industry. Their combined efforts reflect a commitment to pushing the boundaries of existing chemical knowledge and practices.

Conclusion

In summary, Philippe-Jean Tirel stands out as an accomplished inventor whose patents significantly contribute to organic synthesis and chemical methodologies. His collaborations and career milestones underline his role in advancing innovation within the chemical sector, making him a key figure in the world of inventions and patents.

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