Location History:
- Gaithersburg, MD (US) (2004 - 2006)
- Charlestown, MA (US) (2005 - 2010)
Company Filing History:
3 out of 736 
1 out of 31 
Years Active: 2004-2010
Title: Innovations of Timothy J Johnson
Introduction
Timothy J Johnson is an accomplished inventor based in Charlestown, MA (US). He holds a total of 4 patents that showcase his contributions to the field of microfluidics. His work focuses on developing innovative devices and methods that enhance the efficiency of fluid manipulation.
Latest Patents
One of his latest patents is a microfluidic flow manipulation device. This apparatus and method facilitate the mixing of two microfluidic channels, where several wells are oriented diagonally across the width of a mixing channel. The device effectively mixes confluent streams using electrokinetic flow, and to a lesser extent, pressure-driven flow. It can also adapt to split confluent streams into two or more streams with varying concentrations of reactants. Additionally, the surfaces of the wells can be specially coated to improve mixing efficiency by leveraging differing electroosmotic mobility. Another significant patent involves surface charge modification within preformed polymer microchannels. This method allows for the modification of channels made from various substrate materials, including PMMA. It can modulate electroosmotic flow and immobilize chemical compounds or biological species at modified surfaces, thus enhancing the functionality of microfluidic systems.
Career Highlights
Throughout his career, Timothy has worked with notable organizations, including the Government of the United States of America, as represented by the Secretary of Commerce, and the National Institute of Standards and Technology. His experience in these institutions has contributed to his expertise in the field of microfluidics.
Collaborations
Timothy has collaborated with esteemed colleagues such as Laurie E Locascio and David Judson Ross. Their joint efforts have further advanced the research and development of innovative microfluidic technologies.
Conclusion
Timothy J Johnson's contributions to microfluidics through his patents and collaborations highlight his significant role as an inventor. His innovative approaches continue to influence the field and pave the way for future advancements.