Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12023615 | Cartridge filter cleaning system and method | Earl L. Ewen | 2024-07-02 |
| 10176172 | Matching insurance policy related objects | Geoffrey Clarke, Solomon In Kwon, Douglas E. McCreary | 2019-01-08 |
| 5379853 | Diamond drag bit cutting elements | Michael C. Lockwood, Richard H. Dixon, Christopher Reed, Ronald B. Crockett | 1995-01-10 |
| 5282513 | Thermally stable polycrystalline diamond drill bit | — | 1994-02-01 |
| 5217592 | Electrophoresis and vacuum molecular transfer apparatus | — | 1993-06-08 |
| 5103922 | Fishtail expendable diamond drag bit | — | 1992-04-14 |
| 4858707 | Convex shaped diamond cutting elements | George Fyfe | 1989-08-22 |
| 4846290 | Underreamer with revolving diamond cutter elements | — | 1989-07-11 |
| 4813500 | Expendable diamond drag bit | — | 1989-03-21 |
| 4776411 | Fluid flow control for drag bits | — | 1988-10-11 |
| 4756631 | Diamond bearing for high-speed drag bits | — | 1988-07-12 |
| 4751972 | Revolving cutters for rock bits | George Fyfe | 1988-06-21 |
| D295133 | Scoop for french fries | — | 1988-04-12 |
| 4719979 | Expendable diamond drag bit | — | 1988-01-19 |
| 4718595 | Paperboard container for fast food | — | 1988-01-12 |
| 4619637 | Carton forming apparatus | — | 1986-10-28 |
| 4554986 | Rotary drill bit having drag cutting elements | — | 1985-11-26 |
| 4444281 | Combination drag and roller cutter drill bit | Percy W. Schumacher, Henry W. Murdoch, Paul E. Pastusek | 1984-04-24 |
| 4420050 | Oil well drilling bit | — | 1983-12-13 |
| 4256191 | Intermittent high-drag oil well drilling methods and apparatus | — | 1981-03-17 |
| 4241798 | Drilling bits for plastic formations | — | 1980-12-30 |