Barrett; Leonard W.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Barrett; Leonard W..The latest application filed is for "permeable shaped structures of active particulate bonded with psa polymer microparticulate".
- Barrett; Leonard W. - Maplewood MN
- Barrett; Leonard W. - St. Paul MN
| Patent | Date |
|---|---|
| Permeable shaped structures of active particulate bonded with PSA polymer microparticulate Grant 6,391,429 - Senkus , et al. May 21, 2 | 2002-05-21 |
| Molded respirator containing sorbent particles Grant 6,234,171 - Springett , et al. May 22, 2 | 2001-05-22 |
| Molded respirator containing sorbent particles Grant 6,102,039 - Springett , et al. August 15, 2 | 2000-08-15 |
| Pressure-sensitive adhesive polyacrylate polymer microparticulate and method of making Grant 5,952,420 - Senkus , et al. September 14, 1 | 1999-09-14 |
| Pressure-sensitive adhesive polyacrylate polymer and method of making Grant 5,696,199 - Senkus , et al. December 9, 1 | 1997-12-09 |
| Respirator having thermochromic fit-indicating seal Grant 5,617,849 - Springett , et al. April 8, 1 | 1997-04-08 |
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