Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7260871 | Ventable interlocking closure strip | Michael G. Borchardt | 2007-08-28 |
| 5056933 | Multiposition interlocking closure fastening device | — | 1991-10-15 |
| 4922588 | Single hinge interlocking closure profile configuration | Michael G. Borchardt, Robert T. Dorsey, Kevin H. Erwin | 1990-05-08 |
| 4854017 | Multiposition interlocking closure fastening device | — | 1989-08-08 |
| 4844248 | Elasticized gusseted dish cover, method of making same and article of dispensing | Elizabeth A. Forberg | 1989-07-04 |
| 4778282 | Trident interlocking closure profile configuration | Michael G. Borchardt, Robert T. Dorsey | 1988-10-18 |
| 4767220 | Interlocking closure bar for use in high temperature environment | — | 1988-08-30 |
| 4710968 | Trident interlocking closure profile configuration | Michael G. Borchardt, Robert T. Dorsey | 1987-12-01 |
| 4665557 | Multiple omega closures | — | 1987-05-12 |
| 4581007 | Adhesive closure bags and method for producing same | — | 1986-04-08 |
| 4561108 | Interlocking closure bag for use in high temperature environment | — | 1985-12-24 |
| 4540537 | Method and extruding die apparatus for producing a plastic closure strip | — | 1985-09-10 |
| 4516268 | Pentabar closure device | — | 1985-05-07 |
| 4513445 | Adhesive closure bags and method for producing same | — | 1985-04-23 |
| 4477950 | Closure | Kenneth E. Cisek | 1984-10-23 |
| 4450996 | Safety blade for severing stretchable film | — | 1984-05-29 |
| 4428788 | Film-tape-closure device slot cast integrated interlocking structure and extrusion method | — | 1984-01-31 |
| 4426029 | Safety blade for severing stretchable film | — | 1984-01-17 |
| 4362198 | Closure device | — | 1982-12-07 |
| 4306924 | Method and apparatus for producing a plastic container having a reclosable fastener | — | 1981-12-22 |
| 4273550 | Method for producing a flat bottom plastic bag | — | 1981-06-16 |
| 4216899 | Plastic bag handle construction | — | 1980-08-12 |
| 4212337 | Closure fastening device | — | 1980-07-15 |