Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6326413 | Process and apparatus for producing plastics and polymeric foam | James B. Blackwell, John James Blackwell, Stephen William Blackwell | 2001-12-04 |
| 6241220 | Apparatus and process for producing polymeric foam | James B. Blackwell, John James Blackwell, Stephen William Blackwell | 2001-06-05 |
| 6005014 | Apparatus and process for producing polymeric foam | James B. Blackwell, John James Blackwell, Stephen William Blackwell | 1999-12-21 |