This inventor holds 7 USPTO granted patents and 2 EPO patents. Top assignees: Dana Corporation, Mahle Engine Components USA, Inc., Mahle Industries Inc.. Active years: 1998-2015.
Location History:
- Richmond, IN (US) (1998 - 1999)
- Muskegon, MI (US) (2006 - 2015)
Company Filing History:
3 out of 1,558 
3 out of 6 
1 out of 4 Years Active: 1998-2015
Title: The Innovative Contributions of John C. Lahrman
Introduction
John C. Lahrman is a notable inventor based in Muskegon, MI (US). He has made significant contributions to the field of engineering, particularly in the development of piston ring technologies. With a total of 7 patents to his name, Lahrman has demonstrated a commitment to innovation and excellence in his work.
Latest Patents
Among his latest patents is the "Piston ring with localized nitrided coating." This invention features a piston ring that includes an upper face, a lower face, an inner perimeter wall, and an outer perimeter wall. The outer perimeter wall has upper and lower corner regions, with a band of a nitrided conversion layer extending between them. Additionally, a PVD nitride layer is applied to both corner regions, enhancing the durability and performance of the piston ring.
Another significant patent is the "Multi-rail piston ring." This assembly includes a ring or rail that defines a seal surface designed to seal against a piston bore surface of an engine. The design incorporates two positioning rings, one above and one below the oil control rail, ensuring that the outermost peripheries of the positioning rings do not contact the bore surface.
Career Highlights
Throughout his career, John C. Lahrman has worked with prominent companies such as Dana Corporation and Mahle Engine Components USA, Inc. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects.
Collaborations
Lahrman has collaborated with talented individuals in the industry, including Steven John Sytsma and Hugo A. Rita. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.
Conclusion
John C. Lahrman is a distinguished inventor whose work in piston ring technology has made a lasting impact on the engineering field. His innovative patents and collaborations reflect his dedication to advancing technology and improving engine performance.