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For the Inventor, By the Inventor

Metuchen, NJ, United States of America

Roger J Tull

USPTO Granted Patents = 14

Average Co-Inventor Count = 2.7

ph-index = 5

Forward Citations = 55(Granted Patents)


Company Filing History:

goldMedal13 out of 4,770 
 
Merck + Co., Inc.
 patents
silverMedal1 out of 1 
 
Charles E. Frosst & Co.
 patent

Years Active: 1976-1981

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14 patents (USPTO):Explore Patents
1. 4294988 - Method of preparing 2,4-difluoroaniline (1981-10-13),
2. 4216317 - Process for preparing adenine (1980-08-05),
3. 4171440 - Process for purification of 9-(2,6-dihalobenzyl)adenines (1979-10-16),
4. 4167640 - 5-Fluoro-2-methyl-ind-1-ene-3-acetic acid (1979-09-11),
5. 4140719 - Solid-liquid phase transfer catalysis improved method of preparing (1979-02-20),
6. 4127721 - Derivatives of thiadiazolo[3,4-d]pyrimidine (1978-11-28),
7. 4123457 - 2-Methyl-5-fluoro-indanol-3-acetic acid (1978-10-31),
8. 4098787 - Process for preparation of 9-(dihalobenzyl) adenines (1978-07-04),
9. 4051144 - Sinister-3,5-disubstituted oxozolidines their preparation and use (1977-09-27),
10. 4031125 - 3-Sulfonate ester of 2,3-dihydroxypropylamine (1977-06-21),
11. 3998875 - Process of preparing (1976-12-21),
12. 3970693 - Process for preparing indene acetic acids (1976-07-20),
13. 3962338 - Novel methods and compounds employed therein (1976-06-08),
14. 3944600 - Indenylidene-3-acetic acid process for preparing indene acetic acids (1976-03-16),

Title: **The Innovative Journey of Roger J. Tull: A Beacon of Chemical Invention**

Introduction

Roger J. Tull, a distinguished inventor based in Metuchen, NJ, has made significant contributions to the field of chemistry through his innovative inventions. With a commendable portfolio of 14 patents, his work is characterized by breakthroughs in chemical processes that are not only noteworthy but also highly applicable in various industries.

Latest Patents

Among Roger J. Tull's latest patents are two remarkable innovations. The first is a **Method of Preparing 2,4-Difluoroaniline**, which outlines a process involving the reaction of 2,4,5-trichloronitrobenzene with a fluorinating agent. This reaction produces 2,4-difluoro-5-chloronitrobenzene, which is subsequently hydrogenated in the presence of a catalyst to yield 2,4-difluoroaniline. The second patent focuses on a **Process for Preparing Adenine**, where adenine is synthesized by heating hydrogen chloride and hydrogen cyanide in a solvent mixture of phosphorus oxychloride and dichlorophosphoric acid, or through the heating of N-dichloromethylformamidine hydrochloride or triazine hydrochloride in a similar solvent.

Career Highlights

Roger's career has seen him work with reputable companies such as Merck & Company, Inc. and Charles E. Frosst & Co., where he further honed his skills and expertise in chemical innovations. His time spent in these organizations has been instrumental in developing his patented techniques, reflecting his commitment to advancing scientific knowledge.

Collaborations

Throughout his career, Roger has collaborated with notable colleagues, including Leonard M. Weinstock and Ichiro Shinkai. Together, they have contributed to various projects and research efforts, demonstrating the power of teamwork in achieving groundbreaking inventions.

Conclusion

In conclusion, Roger J. Tull exemplifies the spirit of innovation in the chemical industry. With his numerous patents and collaborations, he continues to inspire future generations of inventors. As a testament to his dedication, Tull’s work is likely to influence both academic and industrial practices, paving the way for new advancements in chemistry.

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