This inventor holds 1 USPTO granted patent. Top assignee: E.i. Dupont De Nemours and Company. Active years: 1984.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1984
Title: Cecil L. Long and Continuous Chromium Dioxide Synthesis.
Introduction
Cecil L. Long is an inventor associated with Wilmington, Delaware, and E. I. du Pont de Nemours and Company. His recorded invention concerns a continuous process for producing ferromagnetic chromium dioxide.
Latest Patents
Long is credited with 1 patent, titled “Continuous Synthesis of Chromium Dioxide.” The process feeds a preheated paste of hydrated chromium oxides and additives into a twin-screw reactor. At elevated temperature and pressure, the materials react for a short time as oxygen and steam are vented. Water is injected near the end of the reaction zone to create a viscous chromium dioxide-water mixture, which is then cooled as it passes through a pressure-letdown extruder.
Career Highlights
Long’s listed patent reflects work on continuous chemical processing and the production of ferromagnetic chromium dioxide. The invention’s reactor and extrusion stages are designed to carry the material through reaction, water addition, cooling, and pressure reduction in a continuous operation.
Collaborations
The supplied information lists Robert A. Covington, Jr., and David W. Williston as Long’s coworkers. The patent is associated with E. I. du Pont de Nemours and Company.
Conclusion
Cecil L. Long’s recorded contribution is a continuous synthesis process for ferromagnetic chromium dioxide, developed in connection with E. I. du Pont de Nemours and Company.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile