John Macdonald Liddell

Title: The Innovations of John Macdonald Liddell

Introduction

John Macdonald Liddell is a notable inventor based in Stockton on Tees, GB. He has made significant contributions to the field of biotechnology, holding a total of 11 patents. His work primarily focuses on processes related to antibody purification and plasmid DNA extraction.

Latest Patents

One of Liddell's latest patents is a purification process for fragment antibodies. This innovative process allows for the purification of a fragment antibody from a culture medium that contains impurities. The purification is conducted after reducing the pH of the culture medium to a level where the fragment antibody remains soluble, while one or more impurities become insoluble. Another significant patent is for a plasmid DNA extraction process. This method involves heating a liquid containing cells to an average temperature ranging from 95°C to about 120°C for less than 10 seconds. In preferred aspects, the extraction of pDNA is achieved using flow-through apparatus.

Career Highlights

Throughout his career, Liddell has worked with prominent companies such as Zeneca Limited and Monsanto Company. His experience in these organizations has contributed to his expertise in the field of biotechnology and patent development.

Collaborations

Liddell has collaborated with notable individuals in his field, including Neil George and William Greer. These collaborations have likely enhanced his research and development efforts.

Conclusion

John Macdonald Liddell's contributions to biotechnology through his innovative patents demonstrate his significant impact on the industry. His work continues to influence advancements in antibody purification and DNA extraction processes.