Issued Patents All Time
Showing 26–50 of 67 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4662459 | Drilling system and method employing torsional sonic vibration for lubrication of journal type bit bearings | — | 1987-05-05 |
| 4653587 | Method and apparatus for the sonic cementing of wells in porous formations | — | 1987-03-31 |
| 4652309 | Sonic method and apparatus for heap leaching | — | 1987-03-24 |
| 4645017 | Vibrational isolation system for sonic pile driver | — | 1987-02-24 |
| 4640360 | Sonic cementing | James N. Gregory | 1987-02-03 |
| 4629135 | Cycloidal sonic mill for comminuting material suspended in liquid and powdered material | — | 1986-12-16 |
| 4621688 | Clamping jaw device for well servicing machine | — | 1986-11-11 |
| 4615400 | Sonic drilling system employing spherical drill bit | — | 1986-10-07 |
| 4566800 | Sonic device for extracting minerals from ore | — | 1986-01-28 |
| 4559911 | Modification of diesel engine precombustion chamber to attenuate detonation and improve combustion | — | 1985-12-24 |
| 4548281 | Apparatus and method for installing well casings in the ground employing resonant sonic energy in conjunction with hydraulic pulsating jet action | — | 1985-10-22 |
| 4544031 | Sonic apparatus for augmenting fluid flow from fluid-bearing strata employing sonic fracturing of such strata | — | 1985-10-01 |
| 4527637 | Cycloidal drill bit | — | 1985-07-09 |
| 4522271 | Method and apparatus for damping vibrations in drill collar strings | James N. Gregory | 1985-06-11 |
| 4512401 | Method for forming a cement annulus for a well | — | 1985-04-23 |
| 4487554 | Sonic pump for pumping wells and the like employing a rod vibration system | — | 1984-12-11 |
| 4471838 | Sonic method and apparatus for augmenting fluid flow from fluid-bearing strata employing sonic fracturing of such strata | — | 1984-09-18 |
| 4446933 | Rotary earth boring drill bit with centrifugal lubrication system | — | 1984-05-08 |
| 4436452 | Sonic pile driver system employing resonant drive member and phased coupling | — | 1984-03-13 |
| 4434944 | Mass (inductive) reactance vibratory mill or crusher employing mechanical drive force | — | 1984-03-06 |
| 4429743 | Well servicing system employing sonic energy transmitted down the pipe string | — | 1984-02-07 |
| 4403665 | Sonic system for propelling pilings, drills and the like into the earth employing screw device | — | 1983-09-13 |
| 4393830 | Acoustic detonation suppression in a catalytic environment in internal combustion engine | — | 1983-07-19 |
| 4393932 | Method and apparatus for uniformly packing gravel around a well casing or liner | — | 1983-07-19 |
| 4366988 | Sonic apparatus and method for slurry well bore mining and production | — | 1983-01-04 |