DD

David Doll

LJ L.E. Jones: 12 patents #2 of 12Top 20%
📍 Houston, TX: #1,675 of 21,073 inventorsTop 8%
🗺 Texas: #11,465 of 125,132 inventorsTop 10%
Overall (All Time): #368,906 of 4,157,543Top 9%
13
Patents All Time

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDate
12018343 Martensitic wear resistant alloy strengthened through aluminum nitrides Cong Yue Qiao 2024-06-25
11988294 Sintered valve seat insert and method of manufacture thereof Cong Yue Qiao 2024-05-21
11566299 Martensitic wear resistant alloy strengthened through aluminum nitrides Cong Yue Qiao 2023-01-31
11525172 Nickel-niobium intermetallic alloy useful for valve seat inserts Cong Yue Qiao 2022-12-13
11215090 High performance iron-based alloys for engine valvetrain applications and methods of making and use thereof Cong Yue Qiao, Todd Trudeau, Douglas W. Dooley 2022-01-04
11155904 Cobalt-rich wear resistant alloy and method of making and use thereof Cong Yue Qiao, Heidi Ziegler Doll, Douglas W. Dooley, 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, Todd Trudeau, Douglas W. Dooley 2020-06-09
10421116 Method of casting valve seat inserts and casting apparatus Cong Yue Qiao, Donald K Morris, Howard Delorme, Jr. 2019-09-24
10138766 Iron-based alloys and methods of making and use thereof Cong Yue Qiao, Peter Vennema, Douglas W. Dooley 2018-11-27
9932867 Iron-based alloys and methods of making and use thereof Cong Yue Qiao, Todd Trudeau, Peter Vennema 2018-04-03
9458743 Iron-based alloys and methods of making and use thereof Cong Yue Qiao, Peter Vennema, Douglas W. Dooley 2016-10-04
9334547 Iron-based alloys and methods of making and use thereof Cong Yue Qiao, Todd Trudeau, Peter Vennema 2016-05-10
8940110 Corrosion and wear resistant iron based alloy useful for internal combustion engine valve seat inserts and method of making and use thereof Cong Yue Qiao 2015-01-27