Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12358201 | Method and apparatus for handling a die unit for a sheet extrusion system | Mitchell L. Gritzner, Ryan E. Leopold, Donovan Petry | 2025-07-15 |
| 12296367 | Method for handling components of a sheet extrusion system | Ryan E. Leopold | 2025-05-13 |
| 11890801 | Method and system for processing an extruded sheet | Mitchell L. Gritzner | 2024-02-06 |
| 11865757 | Method and apparatus for processing a formable material | Mitchell L. Gritzner, Matthew Banach | 2024-01-09 |
| 11052592 | Extruder assembly and method of extruding a meltable material using the extruder assembly | Ryan E. Leopold | 2021-07-06 |
| 10406738 | Die assembly and method of setting up an extrusion system utilizing the die assembly | Mitchell L. Gritzner, Ryan E. Leopold | 2019-09-10 |
| 10350810 | Barrel assembly and method of setting up an extrusion system utilizing the barrel assembly | Mitchell L. Gritzner, Ryan E. Leopold | 2019-07-16 |
| 10207444 | Diverter valve | Mitchell L. Gritzner | 2019-02-19 |
| 10071517 | Polymer filter assembly and method of setting up an extruding system utilizing the polymer filter assembly | Mitchell L. Gritzner, Ryan E. Leopold | 2018-09-11 |
| RE45965 | Diverter valve | Mitchell L. Gritzner | 2016-04-05 |
| 9182067 | Extrusion roll with selectable skew capability | Mitchell L. Gritzner | 2015-11-10 |
| 9139393 | Roll stand assembly | Mitchell L. Gritzner | 2015-09-22 |
| 8631925 | Adjusting mechanism for rolls on a roll stand assembly | Ryan E. Leopold | 2014-01-21 |
| 8490643 | Diverter valve | Mitchell L. Gritzner | 2013-07-23 |
| 8342118 | Sheet coating system on an apparatus for extrusion forming a sheet product | Mitchell L. Gritzner, Ryan E. Leopold | 2013-01-01 |
| 8240180 | Height positioning mechanism for roll stand assembly on an apparatus for continuously forming an extruded sheet product | Mitchell L. Gritzner, Ryan E. Leopold | 2012-08-14 |
| 8152509 | Gap adjusting mechanism for rolls on a roll stand used in the extrusion forming of a sheet product | Mitchell L. Gritzner, Ryan E. Leopold | 2012-04-10 |
| 8021140 | Linear bearing assembly to guide movement of roll stand on apparatus for forming an extruded sheet product | Mitchell L. Gritzner, Ryan E. Leopold | 2011-09-20 |
| 7165962 | Web handling roll stand | — | 2007-01-23 |