DUERENER METALLWERKE AKTIENGES has a total of 27 patent applications. Its first patent ever was published in 1937. It filed its patents most often in Switzerland. Its main competitors in its focus markets materials and metallurgy, machine tools and electrical machinery and energy are RENER METALLWERKE AG DU, ZHEJIANG KEYU METAL MAT CO LTD and CHINA RAILWAY CONSTRUCTION ELECTRIFICATION BUREAU GROUP KANG YUAN NEW MAT CO LTD.
| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 27 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Machine tools | |
| #3 | Electrical machinery and energy | |
| #4 | Mechanical elements | |
| #5 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Casting metal | |
| #2 | Alloys | |
| #3 | Making metal sheets | |
| #4 | Changing non-ferrous metals | |
| #5 | Doors and windows | |
| #6 | Electric discharge tubes | |
| #7 | Punching metal | |
| #8 | Making screws | |
| #9 | Nails | |
| #10 | Foundry moulding |
| # | Name | Total Patents |
|---|---|---|
| #1 | Metallwerke Aktiengesellschaft | 27 |
| #2 | Karl H Werning | 1 |