Issued Patents All Time
Showing 51–75 of 77 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8834012 | Electric or natural gas fired small footprint fracturing fluid blending and pumping equipment | Leonard R. Case, Ed B. Hagan, Ron Hyden | 2014-09-16 |
| 8734081 | Methods and systems for material transfer | Ed B. Hagan | 2014-05-27 |
| 8727004 | Methods of treating subterranean formations utilizing servicing fluids comprising liquefied petroleum gas and apparatus thereof | Brad Robert Bull, David Mark Stribling, Leonard R. Case, Ronald Glen Dusterhoft, Gary P. Funkhouser | 2014-05-20 |
| 8444312 | Methods and systems for integral blending and storage of materials | Ed B. Hagan, Leonard R. Case | 2013-05-21 |
| 8313269 | Pneumatic particulate material fill systems and methods | Chad Adam Fisher | 2012-11-20 |
| 7931088 | Methods for treating a well by simultaneously introducing into a mixer streams of water, a viscosity-increasing agent, and a particulate and introducing the mixture into the well | Max L. Phillippi, Billy Slabaugh | 2011-04-26 |
| 7926564 | Portable well treating fluid mixing system and method | Max L. Phillippi | 2011-04-19 |
| 7703518 | Dust control system for transferring dry material used in subterranean wells | Max L. Phillippi | 2010-04-27 |
| 6948535 | Apparatus and method for accurately metering and conveying dry powder or granular materials to a blender in a substantially closed system | — | 2005-09-27 |
| 6398453 | Telescoping spreader box with replaceable strike-off system | — | 2002-06-04 |
| 6194472 | Petroleum hydrocarbon in water colloidal dispersion | Sundaram Logaraj, Thomas J. Ernzen, Moon-Sun Lin, Antonio C. Ng, Todd Lesley Hays +2 more | 2001-02-27 |
| 5980153 | Telescoping auger shaft and method of manufacture | Carl D. PLEMONS | 1999-11-09 |
| 5590976 | Mobile paving system using an aggregate moisture sensor and method of operation | Kenneth E. Kilheffer, Lesley Todd Hays | 1997-01-07 |
| 5570743 | Continuous multi-component slurrying process at oil or gas well | Paul O. Padgett, Stephen F. Crain, Wayne A. Handke, Jerry L. Logan, Ricky L. Covington +2 more | 1996-11-05 |
| 5522459 | Continuous multi-component slurrying process at oil or gas well | Paul O. Padgett, Stephen F. Crain, Wayne A. Handke, Jerry L. Logan, Ricky L. Covington +2 more | 1996-06-04 |
| 5452954 | Control method for a multi-component slurrying process | Wayne A. Handke, Stephen F. Crain, Paul O. Padgett, Vincent P. Rivera, Charles Edward Neal, III | 1995-09-26 |
| 5111955 | Non-metallic acid hatch | Robert L. Baker, Larry D. Billingsley | 1992-05-12 |
| 5006034 | Lifting apparatus | Dale E. Bragg | 1991-04-09 |
| 4919540 | Self-leveling mixer apparatus | Gail F. Davis | 1990-04-24 |
| 4913554 | Lifting apparatus | Dale E. Bragg | 1990-04-03 |
| 4900157 | Blender system with concentrator | Lonnie R. Walker | 1990-02-13 |
| 4898473 | Blended system with concentrator | Lonnie R. Walker | 1990-02-06 |
| 4854714 | Blender vehicle apparatus | Gail F. Davis, Robert L. Baker, Dale E. Bragg | 1989-08-08 |
| 4850750 | Integrated blending control system | Randall B. Cogbill, Timothy James Dodd, Paul W. Heilman, Daryl L. Heronemus, Leslie R. Sears, III +7 more | 1989-07-25 |
| 4850701 | Skid-mounted self-leveling mixer apparatus | Gail F. Davis, Lonnie R. Walker | 1989-07-25 |