Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11312088 | Modular carriage assembly for the fusion of polyolefin pipes | Jason A. Lawrence, Seth P. Ahrens, Paul John Donaldson | 2022-04-26 |
| 11034039 | Facer for end fusion of polyolefin pipes | Timothy M. Thoman, Paul John Donaldson, Brian M. O'Connell | 2021-06-15 |
| 11034097 | Method for butt fusion of polyethylene pipe | Amanda Hawkins, James S. Johnston, Dave Hughes | 2021-06-15 |
| 10682780 | Facer for end fusion of polyolefin pipes | Timothy M. Thoman, Jason A. Lawrence, Paul John Donaldson, Brian M. O'Connell, Seth P. Ahrens | 2020-06-16 |
| 9393739 | Rack type pipe feeder for a pipe fusion machine | James R. Perrault, David W. Porter, Brandon William Jackman, William Barton Draeger, Bobby Lee Murray +1 more | 2016-07-19 |
| 8690517 | Rack type pipe feeder for a pipe fusion machine | James R. Perrault, David W. Porter, Brandon William Jackman, William Barton Draeger, Bobby Lee Murray +1 more | 2014-04-08 |
| D657162 | Cabinet for a ceramic cooker | Joshua B. Combs, Hayden Davis, James R. Perrault, Dave Hughes, Wilianto Wongso | 2012-04-10 |
| D657160 | Cabinet for a ceramic cooker | Joshua B. Combs, Hayden Davis, James R. Perrault, Dave Hughes, Wilianto Wongso | 2012-04-10 |
| D657161 | Cabinet for a ceramic cooker | Joshua B. Combs, Hayden Davis, James R. Perrault, Dave Hughes, Wilianto Wongso | 2012-04-10 |
| D657163 | Cabinet for a ceramic cooker | Joshua B. Combs, Hayden Davis, James R. Perrault, Dave Hughes, Wilianto Wongso | 2012-04-10 |
| D656338 | Cabinet for a ceramic cooker | Joshua B. Combs, Hayden Davis, James R. Perrault, Dave Hughes, Wilianto Wongso | 2012-03-27 |
| 6212747 | Self-contained and self-propelled machine for heat fusing polyolefin pipes | David W. Porter | 2001-04-10 |
| 6212748 | Self-contained and self-propelled machine for heat fusing polyolefin pipes | David W. Porter | 2001-04-10 |
| 6021832 | Self-contained and self-propelled machine and method for heat fusing polyolefin pipes | David W. Porter, Kean C. Chin, Richard A. Deaver | 2000-02-08 |
| 5814182 | Self-contained and self-propelled machine for heat fusing polyolefin pipes | David W. Porter, Kean C. Chin, Richard A. Deaver | 1998-09-29 |
| 5440878 | Variable hydraulic machine | Vernon E. Gleasman, Keith E. Gleasman, David W. Porter | 1995-08-15 |
| 5423121 | Automated fin tube process | James C. Calderwood, Chi K. Chim, Richard A. Deaver | 1995-06-13 |
| 5013376 | Programmable computer controlled pipe fusion device | Jim M. Craig | 1991-05-07 |
| 4911229 | Valve systems for purging earth coupled water source heat pumps | — | 1990-03-27 |
| 4533424 | Pipe fusion apparatus with load cell for attaching side wall fittings | — | 1985-08-06 |
| 4521041 | Pipe connection | Russell Cox | 1985-06-04 |
| 4484975 | Hand held apparatus for joining small diameter plastic pipe | — | 1984-11-27 |
| 4352708 | Defined force fusion machine for joining plastic pipe | — | 1982-10-05 |
| 4345956 | Method for making a pipe connection or fitting | Russell Cox | 1982-08-24 |
| 4250130 | Control of pipe tension between extruder die and take-up coiler | Ronald J. LaSpisa | 1981-02-10 |