Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6797326 | Method of making polycrystalline diamond with working surfaces depleted of catalyzing material | Nigel Dennis Griffin | 2004-09-28 |
| 6749033 | Polycrystalline diamond partially depleted of catalyzing material | Nigel Dennis Griffin | 2004-06-15 |
| 6739214 | Polycrystalline diamond partially depleted of catalyzing material | Nigel Dennis Griffin | 2004-05-25 |