Westlake has a total of 1049 patents globally, out of which 648 have been granted. Of these 1049 patents, more than 54% patents are active. The United States of America is where Westlake has filed the maximum number of patents, followed by China and Canada. Parallelly, the United States of America seems to be the main focused R&D centre and also is the origin country of Westlake.
Westlake was founded in the year 1986. Westlake produces a variety of industrial goods as well as necessities. The company sells items for the home and workplace, including siding, stone veneer, windows, outdoor living, roofing, pipe and fittings, medical devices, soaps and detergents, clothing, toys, shoes, furniture, and electronics. As of April 2023, Westlake Chemical has a market cap of $14.79 Billion.
Do read about some of the most popular patents of Westlake which have been covered by us in this article and also you can find Westlake patents information, the worldwide patent filing activity and its patent filing trend over the years, and many other stats over Westlake patent portfolio.
How many patents does the founder and the CEO of Westlake have?
The founder Ting Tsung Chao have 0 patents and CEO Stephen Albert Chao have 0 patents.
How many patents does Westlake have?
Westlake has a total of 1049 patents globally. These patents belong to 361 unique patent families. Out of 1049 patents, 573 patents are active.
How Many Patents did Westlake 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 | Westlake Applications Filed | Westlake Patents Granted |
| 2023 | – | 7 |
| 2022 | 22 | 40 |
| 2021 | 43 | 30 |
| 2020 | 28 | 35 |
| 2019 | 22 | 45 |
| 2018 | 57 | 38 |
| 2017 | 62 | 35 |
| 2016 | 31 | 43 |
| 2015 | 59 | 18 |
| 2014 | 43 | 35 |
| 2013 | 35 | 27 |
| 2012 | 39 | 34 |
| 2011 | 42 | 42 |
How many Westlake patents are Alive/Dead?
How Many Patents did Westlake File in Different Countries?
Countries in which Westlake Filed Patents
| Country | Patent |
| United States Of America | 282 |
| China | 100 |
| Canada | 89 |
| Europe | 86 |
| Germany | 69 |
| Japan | 60 |
| Korea (South) | 49 |
| Mexico | 46 |
| Brazil | 39 |
| Taiwan | 18 |
| Russia | 17 |
| India | 17 |
| Austria | 16 |
| Gulf Cooperation Council | 12 |
| Norway | 10 |
| South Africa | 7 |
| Spain | 7 |
| Australia | 7 |
| Italy | 7 |
| Saudi Arabia | 6 |
| Indonesia | 6 |
| Hungary | 5 |
| Egypt | 2 |
| France | 2 |
| Colombia | 2 |
| Denmark | 2 |
| Israel | 2 |
| Malaysia | 2 |
| Poland | 2 |
| Argentina | 2 |
| Viet Nam | 1 |
| Singapore | 1 |
| Turkey | 1 |
| Hong Kong (S.A.R.) | 1 |
| United Arab Emirates | 1 |
Where are Research Centres of Westlake Patents Located?
10 Best Westlake Patents
US20020130950A1 is the most popular patent in the Westlake portfolio. It has received 146 citations so far from companies like Intouch Technologies, Pantech and Teladoc Health.
Below is the list of 10 most cited patents of Westlake:
| Publication Number | Citation Count |
| US20020130950A1 | 146 |
| US20090056257A1 | 113 |
| US6988345B1 | 72 |
| US7186457B1 | 62 |
| US6726864B2 | 62 |
| US6359050B1 | 60 |
| US20060197257A1 | 59 |
| US7579509B2 | 55 |
| USD471292S1 | 51 |
| USD453845S1 | 51 |
How many inventions of other companies were rejected due to Westlake patents?
The statistics below share strategic R&D insights. It tells the companies that were trying to protect inventions similar to Westlake invention. They couldn’t because Westlake had protected those before them.
Examiners at the USPTO referred 68 Westlake patents in 257 rejections (35 USC § 102 or 35 USC § 103 types).
The top citing companies in the Westlake patent portfolio are Dow Global Technologies, Chevron Phillips Chemical and Plastic Trends.
List of the Companies whose Patents were rejected citing Westlake –
| Company | Number of Patent Applications that faced Rejection Citing Westlake Patents | Number of Rejections (102 & 103) |
| Dow Global Technologies | 10 | 13 |
| Chevron Phillips Chemical | 4 | 9 |
| Plastic Trends | 3 | 6 |
| Georgia Gulf | 3 | 6 |
| Bank Of America | 3 | 6 |
| Exterior Portfolio | 3 | 6 |
| Sika Corporation | 2 | 2 |
| Lehigh Technologies | 2 | 5 |
| Enduris Extrusions | 2 | 4 |
| United States Gypsum | 2 | 8 |
Count of 102 and 103 Type Rejections based on Westlake Patents
Top Westlake Patents used in Rejecting Most Patent Applications
| Patent Number | Count of Rejected Applications |
| US8864901B2 | 9 |
| US20090056257A1 | 6 |
| US6517727B2 | 5 |
| US7144933B2 | 4 |
| US7618527B2 | 4 |
| US7202290B2 | 4 |
| US6509106B1 | 4 |
| US10030126B2 | 4 |
| US6649694B2 | 4 |
| US6765048B2 | 4 |
| US6899355B2 | 3 |
| US7439286B2 | 3 |
| US7081232B1 | 3 |
| US6726864B2 | 3 |
| US6739106B2 | 3 |