Location History:
- Baton Rouge, LA (US) (1999)
- Baytown, TX (US) (2005)
Company Filing History:
1 out of 4,227 
1 out of 1,780 
Years Active: 1999-2005
Title: Innovations of John C. Coker
Introduction
John C. Coker is a notable inventor based in Baytown, Texas, recognized for his contributions to the field of hydrodesulfurization processes. With a total of two patents to his name, Coker has made significant advancements in the treatment of naphtha streams, which are crucial in the petroleum industry.
Latest Patents
Coker's latest patents include a process for the multi-stage hydrodesulfurization of cracked naphtha streams with interstage fractionation. This innovative process selectively hydrodesulfurizes olefinic naphtha streams that contain a substantial amount of organically bound sulfur and olefins. The process involves fractionating the resulting product stream to produce both a light fraction with less than about 100 wppm organically bound sulfur and a heavy fraction with greater than about 100 wppm organically bound sulfur. The light fraction can be stripped of hydrogen sulfide and either collected or used for gasoline blending.
Another significant patent is the two-stage hydrodesulfurization process, which hydrodesulfurizes naphtha feedstreams by ensuring that the reactor inlet temperature is below the dew point of the feedstock. This allows the naphtha to completely vaporize within the catalyst bed. The preferred catalyst composition includes a specific range of molybdenum trioxide and cobalt oxide, supported on a suitable material, with defined characteristics for optimal performance.
Career Highlights
Throughout his career, John C. Coker has worked with prominent companies such as Exxon Research and Engineering Company and ExxonMobil Research and Engineering Company. His work in these organizations has contributed to the development of advanced technologies in the petroleum sector.
Collaborations
Coker has collaborated with notable coworkers, including Garland B. Brignac and Jeffrey L. Kaufman, who have also made significant contributions to the field.
Conclusion
John C. Coker's innovative patents and career in hydrodesulfurization processes highlight his important role in advancing petroleum technology. His work continues to influence the industry and improve the efficiency of naphtha treatment processes.