Tokyo Gas has a total of 6761 patents globally, out of which 4243 have been granted. Of these 6761 patents, more than 32% patents are active. Japan is where Tokyo Gas has filed the maximum number of patents, followed by United States of America and European Countries. Parallelly, Japan seems to be the main focused R&D centre of Tokyo Gas.
Tokyo Gas was founded in the year 1885. Company is the primary provider of natural gas to the main cities in Japan.
Do read about some of the most popular patents of Tokyo Gas which have been covered by us in this article and also you can find Tokyo Gas patents information, the worldwide patent filing activity and its patent filing trend over the years, and many other stats over Tokyo Gas patent portfolio.
How many patents does Tokyo Gas have?
Tokyo Gas has a total of 6761 patents globally. These patents belong to 6301 unique patent families. Out of 6761 patents, 2208 patents are active.
How Many Patents did Tokyo Gas 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 | Tokyo Gas Applications Filed | Tokyo Gas Patents Granted |
| 2022 | 33 | 220 |
| 2021 | 142 | 122 |
| 2020 | 238 | 145 |
| 2019 | 297 | 114 |
| 2018 | 367 | 109 |
| 2017 | 241 | 152 |
| 2016 | 210 | 164 |
| 2015 | 118 | 95 |
| 2014 | 189 | 178 |
| 2013 | 230 | 199 |
| 2012 | 180 | 179 |
| 2011 | 120 | 224 |
How many Tokyo Gas patents are Alive/Dead?
How Many Patents did Tokyo Gas File in Different Countries?
Countries in which Tokyo Gas Filed Patents
| Country | Patents |
| Japan | 6301 |
| United States Of America | 72 |
| Europe | 71 |
| Germany | 47 |
| China | 30 |
| Korea (South) | 29 |
| Australia | 28 |
| Canada | 20 |
| Spain | 15 |
| Denmark | 9 |
| Norway | 8 |
| Austria | 7 |
| Portugal | 5 |
| New Zealand | 5 |
| Taiwan | 4 |
| Indonesia | 4 |
| India | 3 |
| Mexico | 2 |
| Italy | 2 |
| United Kingdom | 2 |
| Hong Kong (S.A.R.) | 2 |
| Malaysia | 2 |
| Argentina | 1 |
| Gulf Cooperation Council | 1 |
| Poland | 1 |
| United Arab Emirates | 1 |
| Russia | 1 |
Where are Research Centres of Tokyo Gas Patents Located?
10 Best Tokyo Gas Patents
US6505866B1 is the most popular patent in the Tokyo Gas portfolio. It has received 99 citations so far from companies like Lazarus Medical, Value Plastics, and Coolit Systems.
Below is the list of 10 most cited patents of Tokyo Gas:
| Publication Number | Citation Count |
| US6505866B1 | 99 |
| JP2006031989A | 81 |
| JP2006032262A | 76 |
| WO2002098790A1 | 75 |
| WO2004088783A1 | 68 |
| JP2002022062A | 65 |
| JP2006135412A | 58 |
| JP2005166439A | 58 |
| US20110223500A1 | 55 |
| JP2009077457A | 55 |