Location History:
- Thirsk, GB (2000 - 2004)
- North Yorkshire, GB (1999 - 2010)
Company Filing History:
3 out of 3,840 
2 out of 268 
Years Active: 1999-2010
Title: The Innovations of Bernard John Crewdson
Introduction
Bernard John Crewdson is a notable inventor based in North Yorkshire, GB. He has made significant contributions to the field of chemical engineering, particularly in the area of catalyst development and heat exchange reformers. With a total of five patents to his name, Crewdson's work has had a substantial impact on industrial processes.
Latest Patents
One of Crewdson's latest patents is titled "Metal passivation in a heat exchange reformer." This invention describes a method for reducing the interaction between carbon monoxide present in a heat exchange medium and metals on the shell side of heat exchange reformer apparatus. The method involves treating the shell-side of the apparatus with an effective amount of at least one passivation compound containing elements such as phosphorus, tin, and gold. This innovation not only reduces side reactions but also improves the reformer tube lifetime and allows for in-situ treatment without process shutdown.
Another significant patent is the "Process for oxidation of ammonia." This invention involves a catalyst for oxidation reactions, particularly the oxidation of ammonia. The catalyst comprises oxides of rare earth elements and cobalt, with specific atomic ratios that enhance its effectiveness. The catalyst may be supported on a secondary support, which can be an alkali-free alumina or lanthana wash coat, providing versatility in its application.
Career Highlights
Throughout his career, Bernard John Crewdson has worked with prominent companies such as Imperial Chemical Industries Limited and Johnson Matthey Inc. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in chemical processes.
Collaborations
Crewdson has collaborated with notable professionals in his field, including Peter Edward James Abbott and Martin Fowles. These collaborations have likely enriched his work and led to further innovations in his area of expertise.
Conclusion
Bernard John Crewdson's contributions to the field of chemical engineering through his patents and collaborations highlight his role as a significant inventor. His work continues to influence industrial processes and improve efficiency in chemical reactions.