Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6554428 | Method and apparatus for adjusting optical device to correspond to eye positions | John D. Fergason | 2003-04-29 |
| 5857215 | Helmet with high performance head and face protection utilizing molded composite materials and method | John D. Fergason | 1999-01-12 |
| 5749096 | Helmet with high performance head and face protection utilizing complementary materials | David Fry, Stephen M. Brunnell | 1998-05-12 |
| 5751258 | Liquid crystal lens driver electronics for eye protection, high speed shuttering with consistent performance | John D. Fergason | 1998-05-12 |
| 5519522 | Eye protection device for welding helmets and the like with hot mirror and indium tin oxide layer | — | 1996-05-21 |
| 5515186 | Eye protection device for welding helmets which reduces obliquely incident light | Arthur Berman, James L. Fergason, John D. Fergason | 1996-05-07 |
| 5377032 | Electro-optic light shutter and frame assembly with integrated switching mechanism | John D. Fergason | 1994-12-27 |
| D353692 | Welding lens assembly | John D. Fergason | 1994-12-20 |
| 5252817 | Detector system for detecting the occurrence of welding using detector feedback | John D. Fergason | 1993-10-12 |
| 5208688 | Eye protection device for welding helmets | John D. Fergason, Arthur Berman, James L. Fergason | 1993-05-04 |
| 5074647 | Liquid crystal lens assembly for eye protection | John D. Fergason | 1991-12-24 |