Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D971443 | Paving stone | — | 2022-11-29 |
| D971444 | Paving stone | — | 2022-11-29 |
| D950106 | Paving stone | — | 2022-04-26 |
| D900340 | Paving stone | — | 2020-10-27 |
| D896997 | Paving stone | — | 2020-09-22 |
| 10767321 | Integrated pavement systems for collecting and recycling de-icing fluid | — | 2020-09-08 |
| 10494770 | Paving element having drainage channels and pavement system incorporating same | William Edward James | 2019-12-03 |
| D864420 | Paving stone | — | 2019-10-22 |
| D802165 | Paving stone | — | 2017-11-07 |
| D802166 | Paving stone | — | 2017-11-07 |
| D783862 | Paving stone | — | 2017-04-11 |
| 9540776 | Pollutant sequestering paving system | — | 2017-01-10 |
| D762882 | Paving stone | — | 2016-08-02 |
| D759843 | Paving stone | — | 2016-06-21 |
| D675345 | Paving stone | — | 2013-01-29 |
| 7270497 | Paving element | — | 2007-09-18 |
| D521592 | Paving stone | — | 2006-05-23 |
| D511012 | Paving stone | — | 2005-10-25 |
| D510443 | Paving block with ribs | — | 2005-10-04 |
| D417514 | Paving | Fritz von Langsdorff | 1999-12-07 |
| D399978 | Paving element | Gunther Barth, Fritz von Langsdorff | 1998-10-20 |
| D396901 | Paving element | — | 1998-08-11 |
| D391647 | Paving | Fritz von Langsdorff | 1998-03-03 |
| 5713173 | Hexagonal mosaic paving pattern | Fritz von Langsdorff | 1998-02-03 |
| 5360285 | Set of shaped stones and shaped stone for paving ground areas with wide gaps therebetween | Gunther Barth, Fritz von Lansdorff | 1994-11-01 |