Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11215090 | High performance iron-based alloys for engine valvetrain applications and methods of making and use thereof | Cong Yue Qiao, David Doll, Todd Trudeau | 2022-01-04 |
| 11155904 | Cobalt-rich wear resistant alloy and method of making and use thereof | Cong Yue Qiao, David Doll, Heidi Ziegler Doll, Daniel W. Bancroft | 2021-10-26 |
| 10677109 | High performance iron-based alloys for engine valvetrain applications and methods of making and use thereof | Cong Yue Qiao, David Doll, Todd Trudeau | 2020-06-09 |
| 10138766 | Iron-based alloys and methods of making and use thereof | Cong Yue Qiao, Peter Vennema, David Doll | 2018-11-27 |
| 9458743 | Iron-based alloys and methods of making and use thereof | Cong Yue Qiao, Peter Vennema, David Doll | 2016-10-04 |
| 7216427 | Surface treatment of prefinished valve seat inserts | Todd Trudeau, Daniel W. Bancroft, Cong Yue Qiao | 2007-05-15 |
| 6519847 | Surface treatment of prefinished valve seat inserts | Todd Trudeau, Daniel W. Bancroft, Cong Yue Qiao | 2003-02-18 |