This inventor holds 42 USPTO granted patents and 6 published patent applications, primarily in Exhaust Aftertreatment. Top assignees: Gm Global Technolgoy Operations, Inc., Other. Active years: 1992-2018.
Location History:
- Los Angeles, CA (US) (1992)
- Fairfax, VA (US) (1992)
- Rochester, MI (US) (2011 - 2018)
Company Filing History:
40 out of 31,896Â 
2 out of 834,453Â Years Active: 1992-2018
Areas of Expertise:
Title: Innovations by Chang H Kim in Exhaust After-Treatment Systems
Introduction
Chang H Kim, based in Rochester, MI, is an accomplished inventor with an impressive portfolio of 40 patents. His work focuses primarily on advancements in exhaust after-treatment systems, which play a vital role in enhancing fuel efficiency and reducing emissions in combustion engines.
Latest Patents
One of Chang H Kim's latest patents details a method for providing fuel-efficient regeneration of an exhaust after-treatment system that includes a lean oxides of nitrogen (NO) trap (LNT) and a selective catalytic reduction filter (SCRF) positioned downstream of the LNT. This innovative method involves regulating a selectable position valve that allows a first portion of exhaust gas to pass through the LNT while diverting a second portion to bypass it. This method also includes a device to inject fuel into the first portion of exhaust gas, facilitating efficient regeneration of the LNT as well as promoting NO conversion and ammonia formation.
Another notable patent involves the use of perovskite oxide compounds in exhaust after-treatment systems. This method aims to remove NO from an oxygen-rich exhaust flow produced by a combustion source utilizing a lean air-fuel mixture. The exhaust flow is treated using a system that includes a NO oxidation catalyst comprising perovskite oxide particles, a NO storage catalyst, and a NO reduction catalyst.
Career Highlights
Chang H Kim is currently associated with GM Global Technology Operations LLC, where he continues to drive innovation in the automotive sector. His extensive experience and dedication to research have positioned him as a leading figure in developing technologies that significantly improve the efficiency of exhaust systems.
Collaborations
In his quest for innovation, Chang H Kim has collaborated with notable professionals such as Wei Ping Li and Steven Jeffrey Schmieg. Their combined expertise fosters a creative environment that contributes to the advancement of emission control technologies.
Conclusion
Chang H Kim's contributions to the field of exhaust after-treatment systems underscore the importance of innovation in reducing environmental impact and enhancing vehicle efficiency. His ongoing work not only reflects his passion for sustainable engineering but also paves the way for future advancements in automotive technologies.