Company Filing History:
1 out of 48 
1 out of 832,891 Years Active: 1977
Title: Jack C Loh: Innovator in Gas Detection Technology
Introduction
Jack C Loh is a notable inventor based in White Plains, NY (US). He holds 2 patents that showcase his contributions to the field of gas detection technology. His innovative designs reflect a commitment to enhancing safety and efficiency in various applications.
Latest Patents
One of Loh's latest patents is a gas detector designed to sense the presence of a gaseous medium. This device utilizes a helical coil connected to a DC power source, generating both an electromagnetic field and radiant heat. The coil is wrapped around a tubular sleeve made of a sensing material, such as a semiconductor, which is placed within the magnetic and heating fields of the coil. An electrode is positioned in the sleeve, allowing for the detection of gas concentrations by producing a current proportional to the gas detected. The sleeve can be constructed from various materials, including n-type semiconductors like zinc oxide, stannic oxide, or gallium oxide for hydrocarbon detection. Alternatively, tungsten trioxide or molybdenum trioxide mixed with silicon dioxide can be used for hydrogen detection. The device operates at temperatures ranging from 100°C to 450°C, and an additional battery can enhance the sensitivity of the sleeve.
Another significant patent is a coulometer signaling device that indicates when a machine has been used for a predetermined amount of time. This device features a mercury coulometer with an electrolyte that changes color when the mercury on the anode is depleted. The design includes an enlarged end of the tube with a lens to enhance the visibility of the color change.
Career Highlights
Throughout his career, Jack C Loh has worked with various companies, including Curtis Instruments Inc. His experience in the industry has contributed to his innovative approach to gas detection technologies.
Collaborations
Loh has collaborated with notable individuals, including Edward M Marwell, to further his research and development efforts.
Conclusion
Jack C Loh's contributions to gas detection technology through his patents demonstrate his innovative spirit and dedication to safety. His work continues to influence advancements in the field, making a significant impact on various industries.