Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7235116 | High temperature corrosion and oxidation resistant valve guide for engine application | Sundaram L. Narasimhan, Sinharoy Shubhayu, Kevin Martus | 2007-06-26 |
| 6676724 | Powder metal valve seat insert | Sundaram L. Narasimhan, Yushu Wang | 2004-01-13 |
| 6599345 | Powder metal valve guide | Yushu Wang, Sundaram L. Narasimhan | 2003-07-29 |
| 6214080 | Powdered metal valve seat insert | Sundaram L. Narasimhan, Yushu Wang | 2001-04-10 |
| 6139598 | Powdered metal valve seat insert | Sundaram L. Narasimhan, Yushu Wang | 2000-10-31 |