Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7712487 | Spirally wound tube with voids and method for manufacturing the same | — | 2010-05-11 |
| 7625616 | Support post with improved axial strength | — | 2009-12-01 |
| 7331504 | Partially adhered tube and methods and apparatus for manufacturing same | Jean-Paul Languillat | 2008-02-19 |
| 7014046 | I-beam wall corner post | Xiaokai Niu, Michael David Zold, Yanping Qiu | 2006-03-21 |
| 6851643 | Spirally wound tube with enhanced inner diameter stiffness, and method of making same | Yanping Qiu, Mark Burns, Xiaokai Niu, Cliff Bellum | 2005-02-08 |
| 6050148 | Dynamic strength tester for paper cores | John Freeman Staples, Dennis Taylor, Steve Lyles, Jason Stephens | 2000-04-18 |
| 6033352 | Method and apparatus for enhancing seam uniformity in spirally wound tubes | David Howard, Jean-Paul Languillat | 2000-03-07 |
| 5833592 | Method and apparatus for enhancing seam unifority in spirally wound tubes | David Howard, Jean-Paul Languillat | 1998-11-10 |