Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9833117 | Floor finish application pad and method | Nathan E. Ludtke, Glenn N. Weaver, Axel Schmitz | 2017-12-05 |
| 8782843 | Floor finish application pad and method | Nathan E. Ludtke, Glenn N. Weaver, Axel Schmitz | 2014-07-22 |
| 8662778 | Floor finish application assembly and method | Charles A. Crawford, Andrew M. Bober, Christopher F. Lang, Axel Schmitz, Alfred Adolf Widmer | 2014-03-04 |
| 7897002 | Method of modifying a surface | Andrew M. Bober, James H. Gaston | 2011-03-01 |
| 6403546 | Floor cleaner and gloss enhancer | Pablo Hernandez, Russell O. Carlsen, Melwyn Turner, Ryan E. Kron | 2002-06-11 |
| 4924009 | Xanthene dye complexes | Douglas C. Neckers | 1990-05-08 |