Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8636264 | Powder metal component tolerance improvements | Ian W. Donaldson, Michael Doran | 2014-01-28 |
| 6524742 | Electrically conductive, freestanding microporous polymer sheet | James E. Emanuel, Richard W. Pekala | 2003-02-25 |
| 6132899 | Battery Separator having different size ribs and method of making the same | Francis E. Alexander, Daniel E. Weerts | 2000-10-17 |
| 5985484 | Battery separation | Francis E. Alexander, Daniel E. Weerts | 1999-11-16 |
| 5894055 | Battery separator | Francis E. Alexander, Daniel E. Weerts | 1999-04-13 |
| D404976 | Gum holder | — | 1999-02-02 |
| 5789103 | Battery separator and method of making | Francis E. Alexander, Daniel E. Weerts | 1998-08-04 |
| 5762737 | Porous ceramic and process thereof | Raymond L. Bloink | 1998-06-09 |
| 5679479 | Battery separator | Francis E. Alexander | 1997-10-21 |
| 5665488 | Method of making a battery separator and the battery separator produced thereby | Gregory T. Humphrey, Daniel K. Lee | 1997-09-09 |
| 5196825 | Personal security apparatus | — | 1993-03-23 |
| 4960513 | Separator for liquids of different densities | — | 1990-10-02 |