Company Filing History:

7 out of 521

Rhone-poulenc Industries

patents

5 out of 202

Rhone-poulenc Specialites Chimiques

patents

1 out of 3,559

Commissariat a L'energie Atomique

Years Active: 1977-1991

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14 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5055281 - Process for the preparation of calcium fluosilicate as a raw material (1991-10-08),

2. 4822903 - Fluorinated silica catalyst and preparation of aromatic/aliphatic (1989-04-18),

3. 4612184 - High specific surface hydrargillite (1986-09-16),

4. 4545964 - Process for the preparation of porous products based on cobalt fluoride (1985-10-08),

5. 4504595 - Fluorinated silica catalyst and preparation of aromatic/aliphatic (1985-03-12),

6. 4462937 - Process for the preparation of trifluoromethylbenzenes from the (1984-07-31),

7. 4438042 - Preparation of aromatic/aliphatic nitriles (1984-03-20),

8. 4436669 - Preparation of aromatic/aliphatic nitriles (1984-03-13),

9. 4344928 - Process for preparing alumina particulates, at least a fraction of which (1982-08-17),

10. 4315839 - Spheroidal alumina particulates having bifold porosity and process for (1982-02-16),

11. 4314913 - Catalyst for removing NO.sub.x from gas streams (1982-02-09),

12. 4292295 - Highly reactive alumina and process for the preparation thereof (1981-09-29),

13. 4263266 - Process for the preparation of crystalline, alkaline, aluminosilicate (1981-04-21),

14. 4034067 - Hydroxychlorides of aluminum and method (1977-07-05),

Title: Innovations of Laurent Seigneurin

Introduction

Laurent Seigneurin is a notable inventor based in Salindres, France. He has made significant contributions to the field of chemistry, particularly in the development of processes involving calcium fluosilicate and fluorinated silica catalysts. With a total of 14 patents to his name, Seigneurin's work has had a considerable impact on various industrial applications.

Latest Patents

One of Seigneurin's latest patents is a process for the preparation of calcium fluosilicate as a raw material. This innovative method involves the production of anhydrous calcium fluosilicate from anhydrous calcium chloride and impure fluosilicic acid solution, which is a by-product of the acid treatment of phosphorus ores containing fluorine. The process is characterized by the precipitation of calcium fluosilicate dihydrate at low temperatures, achieving yields greater than 94% under specific conditions.

Another significant patent is for an improved fluorinated siliceous catalyst, which is well-suited for the catalytic synthesis of aromatic and aliphatic nitriles from their corresponding formamides, formanilides, or amides. This catalyst comprises silica particulates with specific surface areas and pore volumes, ensuring high efficiency in chemical reactions.

Career Highlights

Throughout his career, Laurent Seigneurin has worked with prominent companies such as Rhone-Poulenc Industries and Rhone-Poulenc Specialites Chimiques. His experience in these organizations has allowed him to refine his expertise in chemical processes and innovations.

Collaborations

Seigneurin has collaborated with notable coworkers, including Roland Jacques and Michel Reppelin. These partnerships have contributed to the advancement of his research and the successful development of his patented technologies.

Conclusion

Laurent Seigneurin's contributions to the field of chemistry through his innovative patents and collaborations highlight his role as a significant inventor. His work continues to influence various industrial applications, showcasing the importance of innovation in advancing technology.

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