Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10507945 | Low frequency modulated heat sealing apparatus and method | — | 2019-12-17 |
| 5624511 | Method and apparatus for joining heat sealable material | — | 1997-04-29 |
| 4894112 | Method and apparatus for joining overlapping sheets of thermally sealable material | — | 1990-01-16 |
| 4872941 | Automatic welding apparatus for welding thermoplastic materials in sheet form | Gerald Lippman | 1989-10-10 |