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For the Inventor, By the Inventor

Wilmington, DE, United States of America

William H Gumprecht

USPTO Granted Patents = 15

Average Co-Inventor Count = 1.4

ph-index = 6

Forward Citations = 165(Granted Patents)


Company Filing History:

goldMedal15 out of 16,338 
 
E.i. Dupont De Nemours and Company
 patents

Years Active: 1982-1997

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15 patents (USPTO):Explore Patents
1. 5663478 - Recovery of aluminum and/or fluoride values from used aluminum (1997-09-02),
2. 5608127 - Halogen exchange process for manufacture of hydrochlorofluoropropanes (1997-03-04),
3. 5399549 - Process for the manufacture of pentafluoroethane (1995-03-21),
4. 5334787 - Process for the manufacture of pentafluoroethane (1994-08-02),
5. 5302766 - Isomerization process (1994-04-12),
6. H001129 - Process for manufacture of 1,1,1,2-tetrafluoroethane (1993-01-04),
7. 5051538 - Process for 1,1-dichloro-1-fluoroethane (1991-09-24),
8. 5045634 - Fluorination of haloolefins (1991-09-03),
9. 4990320 - Process for purifying hydrogen fluoride (1991-02-05),
10. 4967024 - Catalyzed hydrofluorination process (1990-10-30),
11. 4960742 - Spent antimony halide catalysts treatment (1990-10-02),
12. 4960580 - Process for purifying hydrogen fluoride (1990-10-02),
13. 4851595 - Liquid phase halogen exchange process for the manufacture of (1989-07-25),
14. 4843181 - Process for the manufacture of 1,1,1-trifluorodichloroethane and (1989-06-27),
15. 4311863 - Process for the manufacture of 1,1,1,2-tetrafluoroethane (1982-01-19),

Title: The Innovative Contributions of William H. Gumprecht

Introduction

William H. Gumprecht is a notable inventor based in Wilmington, Delaware, with a remarkable portfolio of 15 patents. His work primarily focuses on chemical processes that enhance the recovery of valuable materials from used substances. His innovative approaches have significantly contributed to advancements in the field of chemistry and materials science.

Latest Patents

Among his latest patents, one notable invention is the "Recovery of aluminum and/or fluoride values from used aluminum." This process involves treating used aluminum chlorofluoride catalyst, either alone or mixed with organics. It includes forming a solution of the catalyst in water or an aqueous acid, followed by adjusting the pH and/or composition of the aqueous phase to precipitate compounds containing aluminum and/or fluorine. Another significant patent is the "Halogen exchange process for manufacture of hydrochlorofluoropropanes." This process utilizes halogen exchange to manufacture hydrochlorofluoropropanes using SbF5-yCly, where y ranges from 0 to 1, at temperatures between 50°C and 100°C. This method fluorinates a hydrochlorofluoropropane precursor, resulting in a more highly fluorinated product that is substantially free of perhalogenated or carbon-carbon cleavage products.

Career Highlights

William H. Gumprecht has made significant strides in his career while working at E.I. DuPont De Nemours and Company. His innovative contributions have not only advanced the company's research initiatives but have also positioned him as a leading figure in the field of chemical engineering.

Collaborations

Throughout his career, Gumprecht has collaborated with esteemed colleagues, including Vinci Martinez Felix and Barry Asher Mahler. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

William H. Gumprecht's contributions to the field of chemistry through his patents and collaborative efforts exemplify the spirit of innovation. His work continues to influence advancements in material recovery and chemical processes, showcasing the importance of inventive thinking in addressing modern challenges.

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