Issued Patents All Time
Showing 25 most recent of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10627142 | Apparatus and method for determining the quantity of dissolved refrigerant in oil recovered from an air conditioning system | Mark McMasters, Mahendra Hospet Basavapura Srinivasa | 2020-04-21 |
| 10429110 | System and method for recovering refrigerant | Dylan M. Lundberg, Mark McMasters, Jacob Hanson | 2019-10-01 |
| 9732999 | System and method for recovering refrigerant | Dylan M. Lundberg, Mark McMasters | 2017-08-15 |
| 9470443 | Modified hose flush device and method | Mark McMasters, Dylan M. Lundberg | 2016-10-18 |
| 9447998 | Method and apparatus for improving the charge accuracy of a refrigerant recovery unit | Mark McMasters, Dylan M. Lundberg | 2016-09-20 |
| 9366465 | System and method for improving charge accuracy by temperature compensation | Mark McMasters, Gary P. Murray | 2016-06-14 |
| 9207006 | Method for accurately recharging A/C systems | Mark McMasters | 2015-12-08 |
| 9074801 | Apparatus and method for identifying and operating air purge in safe mode and having a dip tube | Mark McMasters | 2015-07-07 |
| 8661836 | Apparatus to clear oil from the hoses and front end of a recovery recharge machine | Gary P. Murray, Mark McMasters | 2014-03-04 |
| 8621879 | Air conditioning system recharging method and apparatus | Mark McMasters | 2014-01-07 |
| 8616011 | Internal clearing function for a refrigerant recovery/recharge machine | Gary P. Murray | 2013-12-31 |
| 8590335 | Method and apparatus for clearing oil inject circuit for changing oil types | Mark McMasters, Gary P. Murray | 2013-11-26 |
| 8572992 | Method for recovery and recharge of blend refrigerants with blend sent for reclamation | Gary P. Murray, Mark McMasters | 2013-11-05 |
| 8516836 | System and method for accurately recharging an air conditioning system | Mark McMasters | 2013-08-27 |
| 8434344 | Verification of scale calibration method and apparatus | Mark McMasters | 2013-05-07 |
| 8406931 | A/C service tool controller | Mark McMasters, Michael Steven Schoenoff | 2013-03-26 |
| 8272228 | Apparatus to clear oil from the hoses and front end of a recovery recharge machine | Gary P. Murray, Mark McMasters | 2012-09-25 |
| 8272227 | System and method for accurately recharging an air conditioning system | Mark McMasters | 2012-09-25 |
| 8261564 | Refrigerant recovery apparatus with variable vacuum time and method | Gary P. Murray | 2012-09-11 |
| 8122731 | Method and apparatus for clearing oil inject circuit for changing oil types | Mark McMasters, Gary P. Murray | 2012-02-28 |
| 8079226 | Method for accurately recharging A/C systems | Mark McMasters | 2011-12-20 |
| 8070857 | Particulate removal tool | Jim Jirele, Stan Norland, Jamie Stringfield, David Painter, Mark Alan Gasper +6 more | 2011-12-06 |
| 7854133 | Air conditioning service station with electrically driven analog-display pressure gauges | Travis Bakker | 2010-12-21 |
| 7854130 | Internal clearing function for a refrigerant recovery/recharge machine | Gary P. Murray | 2010-12-21 |
| 7739895 | Verification of scale calibration method and apparatus | Mark McMasters | 2010-06-22 |