PS

Philipp A Seyfried

General Motors: 1 patents #591 of 1,592Top 40%
📍 Rochester, MI: #25 of 63 inventorsTop 40%
🗺 Michigan: #3,136 of 9,501 inventorsTop 35%
Overall (2023): #294,811 of 537,848Top 55%
1
Patents 2023

Issued Patents 2023

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11629625 Systems and methods of engine exhaust air injection before and after catalytic converters Chengke Liu, Rafat F. Hattar, John Michael Ellenberger 2023-04-18