Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12018343 | Martensitic wear resistant alloy strengthened through aluminum nitrides | David Doll | 2024-06-25 |
| 11988294 | Sintered valve seat insert and method of manufacture thereof | David Doll | 2024-05-21 |
| 11566299 | Martensitic wear resistant alloy strengthened through aluminum nitrides | David Doll | 2023-01-31 |
| 11530460 | Low-carbon iron-based alloy useful for valve seat inserts | — | 2022-12-20 |
| 11525172 | Nickel-niobium intermetallic alloy useful for valve seat inserts | David Doll | 2022-12-13 |
| 11215090 | High performance iron-based alloys for engine valvetrain applications and methods of making and use thereof | David Doll, Todd Trudeau, Douglas W. Dooley | 2022-01-04 |
| 11155904 | Cobalt-rich wear resistant alloy and method of making and use thereof | David Doll, 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 | David Doll, Todd Trudeau, Douglas W. Dooley | 2020-06-09 |
| 10421116 | Method of casting valve seat inserts and casting apparatus | David Doll, Donald K Morris, Howard Delorme, Jr. | 2019-09-24 |
| 10138766 | Iron-based alloys and methods of making and use thereof | Peter Vennema, Douglas W. Dooley, David Doll | 2018-11-27 |
| 9932867 | Iron-based alloys and methods of making and use thereof | David Doll, Todd Trudeau, Peter Vennema | 2018-04-03 |
| 9638075 | High performance nickel-based alloy | Lawrence A. Bowsher, Daniel E. Ward, Scott A. Smith | 2017-05-02 |
| 9458743 | Iron-based alloys and methods of making and use thereof | Peter Vennema, Douglas W. Dooley, David Doll | 2016-10-04 |
| 9334547 | Iron-based alloys and methods of making and use thereof | David Doll, 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 | David Doll | 2015-01-27 |
| 8613886 | Nickel-rich wear resistant alloy and method of making and use thereof | Todd Trudeau | 2013-12-24 |
| 8479700 | Iron-chromium alloy with improved compressive yield strength and method of making and use thereof | Todd Trudeau | 2013-07-09 |
| 8430075 | Superaustenitic stainless steel and method of making and use thereof | Todd Trudeau | 2013-04-30 |
| 7754143 | Cobalt-rich wear resistant alloy and method of making and use thereof | Daniel W. Bancroft | 2010-07-13 |
| 7216427 | Surface treatment of prefinished valve seat inserts | Todd Trudeau, Daniel W. Bancroft, Douglas W. Dooley | 2007-05-15 |
| 6881280 | Iron-based alloy for internal combustion engine valve seat inserts and the like | — | 2005-04-19 |
| 6702905 | Corrosion and wear resistant alloy | Todd Trudeau | 2004-03-09 |
| 6519847 | Surface treatment of prefinished valve seat inserts | Todd Trudeau, Daniel W. Bancroft, Douglas W. Dooley | 2003-02-18 |
| 6482275 | Nickel based alloys for internal combustion engine valve seat inserts, and the like | — | 2002-11-19 |
| 6436338 | Iron-based alloy for internal combustion engine valve seat inserts | — | 2002-08-20 |