Company Filing History:
2 out of 8 
1 out of 7 Years Active: 1981-1982
Title: The Innovations of John A. Bushman: A Pioneer in Gas Detection Technologies
Introduction
John A. Bushman, a notable inventor based in London, GB, has made significant strides in the field of gas detection technology. With a total of three patents to his name, Bushman's work reflects a commitment to innovative solutions that address pressing environmental and safety concerns.
Latest Patents
Among his latest inventions is a gas detecting and measuring apparatus designed to detect carbon dioxide (CO₂) concentration in the air. This sophisticated device employs a vessel containing water and a layer of ion-exchange resin, strategically sandwiched between water-permeable electrode gauze discs. When CO₂ from the ambient atmosphere dissolves in the water, the resulting dissociated ions reduce the resistance between the electrodes. These electrodes can be connected to a bridge circuit that is calibrated to be out of balance at a specific CO₂ concentration. Alternatively, dissimilar metals can be utilized to form a galvanic cell that generates a measurable output current when the predetermined CO₂ concentration is reached.
Career Highlights
Throughout his career, Bushman has demonstrated exceptional expertise in developing groundbreaking technologies. His contributions have not only advanced the field but also positioned him as a notable figure among inventors dedicated to improving public safety and environmental monitoring.
Collaborations
Bushman has worked closely with various companies that have facilitated his innovative endeavors. Notable among these are Ferraris Development and Engineering Company Limited and Neotronics Limited. His collaborations often include esteemed colleagues such as Garnet M. Williams and Stanley P. Hutton, who have contributed to the successful realization of his projects.
Conclusion
John A. Bushman's inventive spirit and dedication to technological advancement have resulted in innovative solutions such as his gas detecting device. As he continues to explore new frontiers in gas detection and measurement, his contributions remain vital to the fields of environmental safety and technological progress.