Air Liquide has a total of 25951 patents globally, out of which 11379 have been granted. Of these 25951 patents, more than 41% patents are active. Europe is where Air Liquide has filed the maximum number of patents, followed by United States of America and France. Parallelly, France seems to be the main focused R&D centre and also is the origin country of Air Liquide.
Air Liquide was founded in the year 1902. The Company produces, markets and sells industrial and healthcare gases, including liquid nitrogen, argon, carbon dioxide and oxygen worldwide. The Company also produces welding and technical-medical equipment. As of March 2023, the market cap of Air Liquide is $85.47 Billion.
Do read about some of the most popular patents of Air Liquide which have been covered by us in this article and also you can find Air Liquide patents information, the worldwide patent filing activity and its patent filing trend over the years, and many other stats over Air Liquide patent portfolio.
How many patents does the founder and the CEO of Air Liquide have?
The founders Georges Claude has 91 patents and Paul Delorme has 0 patent. The CEO Benoit Potier has 0 patent.
How many patents does Air Liquide have?
Air Liquide has a total of 25951 patents globally. These patents belong to 8481 unique patent families. Out of 25951 patents, 10777 patents are active.
How Many Patents did Air Liquide 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 | Air Liquide Applications Filed | Air Liquide Patents Granted |
| 2023 | 1 | 143 |
| 2022 | 301 | 891 |
| 2021 | 767 | 858 |
| 2020 | 1226 | 682 |
| 2019 | 1098 | 698 |
| 2018 | 1284 | 523 |
| 2017 | 1155 | 295 |
| 2016 | 1251 | 715 |
| 2015 | 1060 | 739 |
| 2014 | 1277 | 594 |
| 2013 | 1234 | 453 |
| 2012 | 1229 | 367 |
How many Air Liquide patents are Alive/Dead?
How Many Patents did Air Liquide File in Different Countries?
Top 30 Countries in which Air Liquide Filed Patents
| Country | Patents |
| Europe | 3590 |
| United States Of America | 3587 |
| France | 3323 |
| Germany | 2276 |
| China | 2063 |
| Japan | 1542 |
| Canada | 813 |
| Korea (South) | 797 |
| Spain | 795 |
| Australia | 640 |
| Austria | 449 |
| Brazil | 422 |
| India | 355 |
| Taiwan | 311 |
| Russia | 258 |
| Poland | 247 |
| Singapore | 221 |
| Denmark | 193 |
| Portugal | 175 |
| South Africa | 155 |
| Italy | 123 |
| Mexico | 112 |
| United Kingdom | 111 |
| Norway | 106 |
| Indonesia | 89 |
| Malaysia | 73 |
| Argentina | 48 |
| Eurasia | 42 |
| New Zealand | 34 |
| Hungary | 27 |
Where are Research Centres of Air Liquide Patents Located?
10 Best Air Liquide Patents
US6752832B2 is the most popular patent in the Air Liquide portfolio. It has received 543 citations so far from companies like Sdgi Holdings, Depuy Spine and Biospine.
Below is the list of 10 most cited patents of Air Liquide:
| Publication Number | Citation Count |
| US6752832B2 | 543 |
| US20150270140A1 | 531 |
| US6400272B1 | 510 |
| US6402752B2 | 468 |
| US20150376211A1 | 402 |
| US6805714B2 | 361 |
| US20050020071A1 | 354 |
| US20160111272A1 | 322 |
| US20090075490A1 | 319 |
| US20090302434A1 | 293 |
How many inventions of other companies were rejected due to Air Liquide patents?
The statistics below share strategic R&D insights. It tells the companies that were trying to protect inventions similar to Air Liquide invention. They couldn’t because Air Liquide had protected those before them.
Examiners at the USPTO referred 1020 Air Liquide patents in 4365 rejections (35 USC § 102 or 35 USC § 103 types).
The top citing companies in the Air Liquide patent portfolio are The Linde Group, Applied Materials and General Electric.
List of the Companies whose Patents were rejected citing Air Liquide –
| Company | Number of Patent Applications that faced Rejection Citing Air Liquide Patents | Number of Rejections (102 & 103) |
| The Linde Group | 63 | 144 |
| Applied Materials | 56 | 129 |
| General Electric | 50 | 129 |
| Praxair | 47 | 87 |
| Certusview Technologies | 41 | 122 |
| Air Products And Chemicals | 33 | 88 |
| Seppic | 29 | 80 |
| Asm Ip Holding | 29 | 75 |
| Tokyo Electron | 28 | 53 |
| Lam Research | 19 | 49 |
Count of 102 and 103 Type Rejections based on Air Liquide Patents
Top Air Liquide Patents used in Rejecting Most Patent Applications
| Patent Number | Count of Rejected Applications |
| US20060282280A1 | 37 |
| US20150270140A1 | 20 |
| US6646564B1 | 18 |
| US6752832B2 | 18 |
| US20090075490A1 | 16 |
| US6551860B2 | 14 |
| US8020585B2 | 11 |
| US8911535B2 | 11 |
| US8188745B2 | 11 |
| US20160111272A1 | 10 |
| US20060055584A1 | 10 |
| US7619523B2 | 9 |
| US20090141583A1 | 9 |
| US20110252827A1 | 8 |
| US20150371869A1 | 8 |
What Percentage of Air Liquide US Patent Applications were Granted?
Air Liquide (Excluding its subsidiaries) has filed 614 patent applications at USPTO so far (Excluding Design and PCT applications). Out of these 348 have been granted leading to a grant rate of 63.16%.
Below are the key stats of Air Liquide patent prosecution at the USPTO.
Which Law Firms Filed Most US Patents for Air Liquide?
| Law Firm | Total Applications | Success Rate |
| American Air Liquide | 361 | 54.08% |
| Nixon & Vanderhye | 52 | 67.31% |
| Buchanan Ingersoll & Rooney | 50 | 91.84% |
| Linda K Russell | 30 | 63.16% |
| Air Liquide | 23 | 63.64% |
| Oblon Mcclelland Maier & Neustadt | 17 | 100.00% |
| Air Liquide Intellectual Property Dept | 8 | 87.50% |
| Faegre Drinker Biddle & Reath | 7 | 100.00% |
| Jeffrey L Wendt | 7 | 100.00% |
| E Joseph Gess | 5 | 80.00% |