| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 4 | |
| #2 | France | 3 | |
| #3 | Italy | 2 | |
| #4 | United States | 2 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | Japan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Hats |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schleicher Wolfram | 6 |
| #2 | Piech Von Planta Corina | 4 |
| #3 | Piech Corina | 1 |
| #4 | Buorufuramu Shiyuraihiyaa | 1 |
| #5 | Planta Corina Piech Von | 1 |
| #6 | Koriina Piichi | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ITMI950182D0 | Protective helmet, in particular for motorcyclists or the like | |
| FR2729056A1 | SAFETY HELMET | |
| DE3607483A1 | Hard hat | |
| DE3515938A1 | Protective helmet having a chin-strap tightening device | |
| US4100619A | Protective helmet | |
| DE2608626A1 | Full face safety helmet - has spherical transparent visor pivotal on outside of helmet shell and has catch device | |
| DE2603490A1 | Crash helmet with easily operated visor - has swivel or slide mountings for visor inside helmet shell |