Location History:
- Chelsea, MI (US) (1993 - 1996)
- Glendale, AZ (US) (1997 - 1998)
Company Filing History:
Years Active: 1993-1998
Title: John E Letcher: Innovator in Evaporative Emission Control Systems
Introduction
John E Letcher is a notable inventor based in Chelsea, MI (US), recognized for his contributions to automotive technology. He holds a total of 7 patents, showcasing his innovative approach to solving complex engineering challenges.
Latest Patents
Among his latest patents is a method of leak detection during low engine vacuum for an evaporative emission control system. This method involves pulsing a leak detection pump at a predetermined rate and determining whether the engine vacuum level is low. It also includes maintaining pressurization of the evaporative emission control system and detecting leaks once normal engine vacuum levels are restored. Another significant patent is the purge system flow monitor and method, which monitors the purge flow in an evaporative emission control purge system of a motor vehicle. This system utilizes signals indicative of engine speed, fuel control, and automatic idle speed position to ensure the proper operation of the purge flow system.
Career Highlights
John E Letcher has made significant strides in his career, working with Chrysler Corporation, where he has applied his expertise in automotive engineering. His innovative methods have contributed to advancements in emission control technologies, which are crucial for meeting environmental standards.
Collaborations
Throughout his career, John has collaborated with talented individuals such as Mark E Hope and William B Blomquist. These partnerships have fostered a creative environment that has led to the development of impactful automotive technologies.
Conclusion
John E Letcher stands out as a key figure in the field of automotive innovation, particularly in evaporative emission control systems. His patents reflect a commitment to improving vehicle efficiency and environmental sustainability.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.