Otsuka Corporation has a total of 146 patents globally, out of which 65 have been granted. Of these 146 patents, more than 67% patents are active. Japan is where Otsuka Corporation has filed the maximum number of patents, followed by United States Of America and Korea (South). Parallelly, Japan seems to be the main focused R&D centre of Otsuka Corporation.
Otsuka Corporation was founded in the year 1947. Company is involved in the manufacturing and supply of PET raw cotton, non-woven fabrics, needle punching and textile machinery.
Do read about some of the most popular patents of Otsuka Corporation which have been covered by us in this article and also you can find Otsuka Corporation patents information, the worldwide patent filing activity and its patent filing trend over the years, and many other stats over Otsuka Corporation patent portfolio.
How many patents does Otsuka Corporation have?
Otsuka Corporation has a total of 146 patents globally. These patents belong to 117 unique patent families. Out of 146 patents, 98 patents are active.
How Many Patents did Otsuka Corporation 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 | Otsuka Corporation Applications Filed | Otsuka Corporation Patents Granted |
| 2022 | – | 5 |
| 2021 | 6 | 12 |
| 2020 | 16 | 2 |
| 2019 | 8 | 2 |
| 2018 | 3 | 1 |
| 2017 | 9 | 3 |
| 2016 | 14 | 3 |
| 2015 | 14 | 7 |
| 2014 | 12 | 3 |
| 2013 | 3 | 1 |
| 2012 | 10 | 3 |
| 2011 | 4 | 3 |
How many Otsuka Corporation patents are Alive/Dead?
How Many Patents did Otsuka Corporation File in Different Countries?
Where are Research Centres of Otsuka Corporation Patents Located?
10 Best Otsuka Corporation Patents
JP2005018742A is the most popular patent in the Otsuka Corporation portfolio. It has received 25 citations so far from companies like Sysmex Corp, Oki Data Corp and Seiko Epson Corp.
Below is the list of 10 most cited patents of Otsuka Corporation:
| Publication Number | Citation Count |
| JP2005018742A | 25 |
| US20060168005A1 | 14 |
| JP2016071829A | 14 |
| JP2014112278A | 14 |
| US20100293939A1 | 9 |
| US20130179550A1 | 8 |
| JP2003337595A | 8 |
| JP3197748U | 7 |
| JP2018003544A | 6 |
| JP2012230584A | 6 |