Location History:
- Seattle, WA (US) (1979 - 1991)
- Tallassee, AL (US) (1996)
- Brigham City, UT (US) (2002 - 2012)
- Radford, VA (US) (2013)
Company Filing History:
8 out of 492 
2 out of 832,843 Years Active: 1979-2013
Title: **Harold E. Johnston: Innovator in Percussion Primer Technology**
Introduction
Harold E. Johnston, based in Brigham City, Utah, is a prolific inventor recognized for his significant contributions to the field of explosive materials and percussion primer systems. With a total of 12 patents to his name, Johnston has played a pivotal role in advancing technology related to ammunition and ordnance.
Latest Patents
Among Harold E. Johnston's latest patents is the innovative design of a percussion primer composition and systems incorporating the same. This composition features a moderately insensitive explosive, such as CL-20, PETN, RDX, or HMX, along with a sensitizer composed of materials like aluminum, titanium, or magnesium. His patent outlines the formulation of a primer composition that may contain an oxidizer, including conventional oxidizers or bismuth compounds. Furthermore, the methodology for forming sensitized explosives and percussion primers indicates a sophisticated understanding of materials science and explosives technology.
Another notable patent involves methods of forming a sensitized explosive that incorporates a melt binder, enhancing the stability and efficacy of the primer. The detailed invention takes into account the specific properties of the explosive and sensitizers, demonstrating Johnston's expertise in the field.
Career Highlights
Throughout his career, Johnston has contributed to various companies that enhance his professional portfolio. Notably, he worked with Alliant Techsystems Inc., where he developed innovative solutions for ordnance and munitions technologies. His extensive experience within this sector has allowed him to become a recognized figure in the field of explosive inventions.
Collaborations
Collaboration has played a significant role in Johnston's career. He has worked alongside notable peers, including Thomas K. Highsmith and Gary K. Lund. This teamwork has fostered a dynamic environment for innovation, leading to the successful development of multiple patents and advancements in percussion primer technology.
Conclusion
Harold E. Johnston's contributions to the field of explosives and percussion primers represent a blend of innovation and technical expertise. His substantial patent portfolio and notable collaborations highlight his commitment to advancing technology in these critical areas. As an inventor, Johnston continues to influence the landscape of explosives, paving the way for future advancements in the industry.