Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10821353 | Color or pattern matching toy | Klause Pfeffer | 2020-11-03 |
| D834108 | Toy stacking construction block set | Klaus Pfeffer | 2018-11-20 |
| D787612 | Toy stacking construction block set | Klaus Pfeffer | 2017-05-23 |
| D760847 | Game piece | — | 2016-07-05 |
| D664215 | Toy stacking block construction set | — | 2012-07-24 |
| D650866 | Toy stacking construction block | — | 2011-12-20 |