Showing 1–3 of 3 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Richard L. Helferich | The Duriron Company | 5 |
| 2 | William J. Minneman | Mtm Molded Products | 1 |
| 2 | Steve William Minneman | Mtm Molded Products | 1 |
Part of Ohio
7 patents · 3 inventors · 0.5/1k pop.
Ranked #4,647 of 20,767 cities Top 25%
Showing 1–3 of 3 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Richard L. Helferich | The Duriron Company | 5 |
| 2 | William J. Minneman | Mtm Molded Products | 1 |
| 2 | Steve William Minneman | Mtm Molded Products | 1 |
Part of Ohio