Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7934697 | Apparatus and methods for gripping an elongated item | Jianmin Li | 2011-05-03 |
| 7478794 | Apparatus and methods for gripping an elongated item | Jianmin Li | 2009-01-20 |
| 7410608 | Methods for manufacturing a diaphragm for an air admittance valve | — | 2008-08-12 |
| 7395835 | Air admittance valve | — | 2008-07-08 |
| 6851342 | Anti-ovaling mechanical coupler | Larry M. Dugan, Steven X. Johnson, Jianmin Li | 2005-02-08 |
| 6029412 | Intumescent interlocking collar | — | 2000-02-29 |
| 5357727 | Expansion joint | Glen Duckworth, Bill Heisterberg, Mark Honstra, Trest Polina, Stephen L. Newcomb | 1994-10-25 |
| 5351448 | Fire barrier | Roger L. Rumsey | 1994-10-04 |
| 5326609 | Expansion joint fire barrier | — | 1994-07-05 |
| 5263293 | Expansion joint fire barrier systems | Tom LOVE, Loren W. Keely, Michael D. Wilson | 1993-11-23 |
| 5140797 | Expansion joint fire barrier systems | Tom LOVE, Loren W. Keely, Michael D. Wilson | 1992-08-25 |
| 4999962 | Expansion joint fire barrier systems | Tom LOVE, Loren W. Keely, Michael D. Wilson | 1991-03-19 |
| 4967527 | Expansion joint fire barrier systems | — | 1990-11-06 |