| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 6 | |
| #2 | Japan | 2 | |
| #3 | Denmark | 1 | |
| #4 | EPO (European Patent Office) | 1 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Civil engineering | |
| #3 | Materials and metallurgy |
| # | Technology | |
|---|---|---|
| #1 | Soldering, welding and flame cutting | |
| #2 | Machines for making railways | |
| #3 | Pig-iron processing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Knothe Wolfgang | 4 |
| #2 | Menzinger Manfred | 4 |
| #3 | Farrenkopf Wolfgang | 4 |
| #4 | Gruenauer Heinrich | 3 |
| #5 | Opitz Reinhard | 2 |
| #6 | Opitz Reinhard Dr-Ing | 2 |
| #7 | Grunauer Heinrich | 1 |
| #8 | Von Hirsch Joachim | 1 |
| #9 | Rainharuto Opitsutsu | 1 |
| #10 | Manfureeto Mentsuingaa | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JP2002266301A | Point switch for rail-car and roller device therefor | |
| DE19729208A1 | Rolling device for carrying the tongue of a switch | |
| DE19724977A1 | Device for fastening rails | |
| DE19621822A1 | Tracking device for railroad tracks | |
| DE3644577C1 | Friction welding process | |
| DE3600813A1 | Welding process for joining a spheroidal-graphite cast iron component to a steel component | |
| DE3447244C1 | Process for producing nodular cast iron and vermicular cast iron |