Severstal has a total of 57 patents globally, out of which 34 have been granted. Of these 57 patents, more than 7% patents are active. United States of America is where Severstal has filed the maximum number of patents, followed by Canada and Australia. Parallelly, United States of America seems to be the main focused R&D centre of Severstal.
Severstal was founded in the year 1955. The Company deals in steel and mining.
Do read about some of the most popular patents of Severstal which have been covered by us in this article and also you can find Severstal patents information, the worldwide patent filing activity and its patent filing trend over the years, and many other stats over Severstal patent portfolio.
How many patents does Severstal have?
Severstal has a total of 57 patents globally. These patents belong to 21 unique patent families. Out of 57 patents, 4 patents are active.
How Many Patents did Severstal File Every Year?
Are you wondering why there is a drop in patent filing for the last two years? It is because a patent application can take up to 18 months to get published. Certainly, it doesn’t suggest a decrease in the patent filing.
| Year of Patents Filing or Grant | Severstal Applications Filed | Severstal Patents Granted |
| 2019 | 1 | – |
| 2014 | – | 1 |
| 2011 | – | 5 |
How many Severstal patents are Alive/Dead?
How Many Patents did Severstal File in Different Countries?
Where are Research Centres of Severstal Patents Located?
10 Best Severstal Patents
US6408667B1 is the most popular patent in the Severstal portfolio. It has received 39 citations so far from companies like Sms Group Gmbh, Corts Engineering and Siemens.
Below is the list of 10 most cited patents of Severstal:
| Publication Number | Citation Count |
| US6408667B1 | 39 |
| US20050273381A1 | 27 |
| US6835229B2 | 26 |
| US20070009755A1 | 19 |
| US20100136362A1 | 15 |
| US6440355B1 | 12 |
| US6468674B2 | 8 |
| US20020136920A1 | 7 |
| US7699686B2 | 4 |
| US7621165B2 | 4 |