| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 4 | |
| #2 | EPO (European Patent Office) | 4 | |
| #3 | Japan | 3 | |
| #4 | United States | 3 | |
| #5 | Brazil | 1 | |
| #6 | China | 1 | |
| #7 | Republic of Korea | 1 | |
| #8 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Materials and metallurgy | |
| #3 | Machines | |
| #4 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Electric switches | |
| #2 | Unspecified technologies | |
| #3 | Working metallic powder | |
| #4 | Alloys | |
| #5 | Climate change mitigation in goods production |
| # | Name | Total Patents |
|---|---|---|
| #1 | Siefken Udo | 13 |
| #2 | Renner Gerd | 9 |
| #3 | Renner Gerhard | 5 |
| #4 | Mueller Martin | 5 |
| #5 | Siefken Udo Dr Dipl-Chem | 2 |
| #6 | Renner Gerd Dipl-Ing | 2 |
| #7 | Muller Martin | 1 |
| #8 | Siefken Udo Dipl Chem Dr | 1 |
| #9 | Renner Gerd Dipl Ing | 1 |
| #10 | Martin Renner Gerhard Siefken | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE10318223A1 | Contact piece made of tungsten with a corrosion-inhibiting layer of base metal | |
| DE19916082A1 | Composite material produced by powder metallurgy, process for its production and its use | |
| DE19903619C1 | Powder metallurgical composite material, especially for high voltage vacuum switch contacts, comprises refractory solid solution or intermetallic phase grains embedded in a metal matrix | |
| DE19650752C1 | Sintered copper@-chromium@ vacuum contact material |