Patents per Year
Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 10682695 | Method for the semi-permanent mold casting process | David D. Goettsch, Allen Birschbach, Kyle W. Lehrmann | 2020-06-16 | $18,970,000 |
| 6845810 | Lost-foam casting apparatus for improved recycling of sprue-metal | June-Sang Siak, Gordon Alwin Tooley, Jerry Barendreght | 2005-01-25 | $8,479,000 |
| 6619373 | Lost foam casting apparatus for reducing porosity and inclusions in metal castings | Gordon Alwin Tooley, June-Sang Siak, Richard Simerson | 2003-09-16 |