Lydall has a total of 337 patents globally, out of which 170 have been granted. Of these 337 patents, more than 27% patents are active. The USA is where Lydall has filed the maximum number of patents, followed by Europe (EPO) and Germany. Parallelly, the USA seems to be the main focused R&D centre of Lydall and is also the origin country of the firm.
Lydall was founded in the year 1913 by Henry Lydall. The company designs and manufactures specialty engineered filtration media, industrial thermal insulating solutions.
Do read about some of the most popular patents of Lydall which have been covered by us in this article and also you can find Lydall patents information, the worldwide patent filing activity and its patent filing trend over the years, and many other stats over Lydall patent portfolio.
How many patents does Lydall have?
Lydall has a total of 337 patents globally. These patents belong to 111 unique patent families. Out of 337 patents, 91 patents are active.
How Many Patents did Lydall 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 | Lydall Applications Filed | Lydall Patents Granted |
| 2022 | 5 | 9 |
| 2021 | 3 | 9 |
| 2020 | 3 | – |
| 2019 | 6 | 5 |
| 2018 | 24 | 2 |
| 2017 | 4 | 6 |
| 2016 | 38 | 10 |
| 2015 | 12 | 8 |
| 2014 | 19 | 7 |
| 2013 | 8 | 19 |
| 2012 | 17 | 8 |
| 2011 | 1 | 6 |
How many Lydall patents are Alive/Dead?
Worldwide Patents
How Many Patents did Lydall File in Different Countries?
List of Countries in which Lydall Filed Patents
| Country | Patents |
| United States Of America | 64 |
| Europe | 42 |
| Germany | 31 |
| Japan | 26 |
| Korea (South) | 19 |
| China | 18 |
| Austria | 15 |
| Mexico | 15 |
| Canada | 14 |
| Australia | 10 |
| Spain | 7 |
| Brazil | 6 |
| Poland | 4 |
| Czech Republic | 4 |
| Slovakia | 4 |
| Denmark | 3 |
| India | 3 |
| Portugal | 2 |
| Italy | 2 |
| Taiwan | 1 |
| Hungary | 1 |
| Croatia | 1 |
| Serbia | 1 |
| Netherlands | 1 |
| Ireland | 1 |
Where are Research Centres of Lydall Patents Located?
10 Best Lydall Patents
US6579350B2 is the most popular patent in the Lydall portfolio. It has received 80 citations so far from companies like Illinois Tool Works and 3M Innovative Properties Company.
Below is the list of 10 most cited patents of Lydall:
| Publication Number | Citation Count |
| US6521077B1 | 80 |
| US20060277877A1 | 77 |
| US6521077B1 | 66 |
| US20100230351A1 | 58 |
| US20080280040A1 | 51 |
| US6626439B1 | 40 |
| US20080176050A1 | 34 |
| WO2009013340A1 | 28 |
| US8137436B2 | 26 |
| USRE39260E1 | 26 |
What are Lydall‘s key innovation segments?
What Technologies are Covered by Lydall?
The chart below distributes patents filed by Lydall