This inventor holds 5 USPTO granted patents, plus 1 CIPO patent. Top assignees: Banjo Corporation, Other. Active years: 1985-2005.
Location History:
- New York, NY (US) (1985)
- Crawfordsville, IN (US) (1997)
- Zionsville, IN (US) (2004 - 2005)
Company Filing History:

Years Active: 1985-2005
Title: The Innovative Journey of Mark E Gillen
Introduction
Mark E Gillen, an accomplished inventor based in Zionsville, Indiana, has made significant contributions to the field of technology through his innovative patents. With a total of five patents to his name, Gillen is recognized for his inventive spirit and practical solutions to complex engineering challenges.
Latest Patents
Among his latest innovations, Gillen has developed the following noteworthy patents:
1. **Rotatable Seal for Ball Valve**: This patent presents a ball valve assembly that features two selectively detachable end bodies, each containing a fluid-conveying bore. The key innovation lies in the rotatable ball valve element, which can shift from an open position, allowing fluid flow, to a closed position, where the passage is misaligned with the bores. Importantly, the design facilitates assembly by ensuring the ball valve element is in the open position, significantly reducing the force typically required for assembly.
2. **Venting Lid Apparatus for Tank Opening**: This invention encompasses a lid apparatus designed for tank openings that effectively retains liquid while permitting air to vent in and out of the tank. The innovative air manifold is integrated into an installation ring, enhancing air flow while preventing fluid splashes. This design boasts a series of angularly offset openings which improve venting efficiency and maintain the integrity of the fluid containment.
Career Highlights
Throughout his career, Mark E Gillen has worked with various companies, notably Banjo Corporation, where he honed his skills as an inventor. His experiences in these companies have provided him with a solid foundation in engineering and design, allowing him to develop practical solutions for industrial applications.
Collaborations
In his professional journey, Gillen has collaborated closely with Stephen L Biggs, benefitting from shared insights and expertise. Such collaborations have undoubtedly contributed to the refinement of his innovative ideas and the successful realization of his patented inventions.
Conclusion
Mark E Gillen exemplifies the spirit of innovation through his contributions to technology and engineering. With a focus on practical solutions, his patents, including the rotatable seal for ball valves and venting lid apparatus, reflect his dedication to improving industrial processes. As he continues to innovate, Gillen undoubtedly remains a figure to watch in the world of inventors.