| 9995508 | Systems for heating water used in hydraulic fracturing | Oct 28, 15 | Jun 12, 18 | MULTITEK NORTH AMERICA, LLC |
| 9857013 | System for waste heat recovery for a fluid heater | Jun 27, 13 | Jan 02, 18 | Not available |
| 9829213 | Heater with telescoping tower | Jun 30, 14 | Nov 28, 17 | OIL, GAS AND INDUSTRIAL PROCESS EQUIPMENT, TOTAL ENERGY RESOURCES, INC., |
| 9814645 | Circulating hot water nursing machine | Apr 03, 15 | Nov 14, 17 | SUZHOU ALTON ELECTRICAL & MECHANICAL INDUSTRY CO., LTD. |
| 9808107 | Portable steam-producing apparatus and methods of making and using the same | Jul 22, 15 | Nov 07, 17 | Not available |
| 9802459 | Self-contained flameless fluid heating system | Dec 21, 12 | Oct 31, 17 | Multitek North America, LLC |
| 9797621 | Portable device to improve the connection of plastic tubing to fittings | Jul 02, 12 | Oct 24, 17 | Parzick, Charles |
| 9719729 | Heating system for heating fluid in a tank | Apr 10, 14 | Aug 01, 17 | Not available |
| 9655811 | Liquid heater | Aug 31, 15 | May 23, 17 | Divine Solutions Inc. |
| 9441859 | Portable open-loop wellwater source heat pump for standalone and duct-connected installation | Mar 07, 13 | Sep 13, 16 | Terra Caloric, LLC |
| 9404691 | Condensing heat recovery unit for a portable fluid heater | Jul 24, 13 | Aug 02, 16 | Not available |
| 9351611 | Portable water heater | Dec 28, 10 | May 31, 16 | Taph, LLC |
| 9316408 | Energy supply module and method of assembling the same | Feb 27, 14 | Apr 19, 16 | Not available |
| 9303898 | Portable temperature-controlled water heater | Dec 05, 10 | Apr 05, 16 | Not available |
| 9228760 | Flameless heating system | Apr 27, 12 | Jan 05, 16 | MAC, INC. |
| 9157634 | Indirect fired heater with inline fuel heater | Aug 30, 11 | Oct 13, 15 | WACKER NEUSON PRODUCTION AMERICAS LLC |
| 9103561 | Frac water heating system and method for hydraulically fracturing a well | Jan 31, 14 | Aug 11, 15 | Not available |
| 9062546 | Method for heating treatment fluid using an oil-fired frac water heater | May 20, 13 | Jun 23, 15 | Not available |
| 9052121 | Mobile water heating apparatus | Nov 29, 12 | Jun 09, 15 | INTELLIGENT ENERGY, LLC, INTELLIGENT HEATING, LLC, |
| 8960564 | Method for hydraulically fracturing a well using an oil-fired frac water heater | Oct 30, 13 | Feb 24, 15 | Not available |