Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10801654 | Tubular pipe fitting insert with interior reinforcement ribs | Duane K. Smith, Douglas L. Kirk | 2020-10-13 |
| 9938680 | Fittings for irrigation systems | Duane K. Smith, Scott L. Blankley | 2018-04-10 |
| D797904 | Fenestrated tip for a spike tap of an irrigation fitting | Duane K. Smith, Scott L. Blankley | 2017-09-19 |
| D783132 | Fenestrated tip for a spike tap of an irrigation fitting | Duane K. Smith, Scott L. Blankley | 2017-04-04 |
| 9599268 | Fittings for pipes, and presses for installing the fittings to pipes | Duane K. Smith | 2017-03-21 |
| 9593789 | Pipe-fitting with adaptor assembly and related methods | Duane K. Smith | 2017-03-14 |
| D778410 | Fenestrated tip for a spike tap of an irrigation fitting | Duane K. Smith, Scott L. Blankley | 2017-02-07 |
| 9297486 | Pipe fittings with insert retaining seals and related methods | Duane K. Smith, Douglas L. Kirk | 2016-03-29 |
| D709994 | Insert portion of a pipe fitting | Duane K. Smith, Douglas L. Kirk | 2014-07-29 |
| 8662541 | Fittings for sealed retention to end portions of pipes and related methods | Duane K. Smith, Douglas L. Kirk | 2014-03-04 |
| 8596691 | Fittings connectable to end portions of pipes and related methods | Duane K. Smith, Douglas L. Kirk | 2013-12-03 |
| 8172276 | Fittings connectable to end portions of pipes and related methods | Duane K. Smith, Douglas L. Kirk | 2012-05-08 |
| 7806718 | Electrical connectors and methods of connecting | Douglas L. Kirk, Dan Julian | 2010-10-05 |
| D575738 | Electrical connector | Douglas L. Kirk, H. Benjamin Bishop | 2008-08-26 |
| D575230 | Electrical connector | H. Benjamin Bishop, Douglas L. Kirk | 2008-08-19 |
| 7335050 | Electrical connector for use in connecting wires | Douglas L. Kirk | 2008-02-26 |
| 7150476 | Saddle tee and tap for irrigation lines | — | 2006-12-19 |
| 6986532 | Saddle tee and tap for irrigation lines | — | 2006-01-17 |
| 6901688 | Illuminated house address sign | — | 2005-06-07 |
| 6850924 | Automated process guidance system and method | Mark Grimse, Pat Neargarder, Michael Ohr | 2005-02-01 |
| 6773036 | Saddle tee, saddle tee and tap, and fluid connection for irrigation lines | — | 2004-08-10 |
| 6658738 | Pipe and tubing cutter | — | 2003-12-09 |
| 6357472 | Self-tapping tee | — | 2002-03-19 |
| 6269355 | Automated process guidance system and method using knowledge management system | Mark Grimse, Pat Neargarder, Michael Ohr | 2001-07-31 |
| 6216723 | Self-tapping tee | — | 2001-04-17 |