Chunqing Liu has filed 397 patents, out of which 179 have been granted. Of these 397 patents, more than 42% patents are active. Out of these 397 patents, 154 patents filed only in the US, out of which 97 patents has been granted.
Do read about some of the most popular patents of Chunqing Liu which have been covered by us in this article and also you can find his patents filing trend over the years, the worldwide coverage and many other stats over Chunqing Liu patent portfolio.
The data of inventors patents made available here is solely intended for informational purposes. Although we make every effort to maintain the accuracy and comprehensiveness of the provided information, we cannot guarantee that all data is completely free of errors or entirely up-to-date. If you happen to be the Inventor and wish to contribute additional data for your respective portfolio, kindly get in touch with us.
How many patents does Chunqing Liu have?
Chunqing Liu has a total of 397 patents. These patents belong to 123 unique patent families. Out of 397 patents, 167 patents are active.
How Many Patents did Chunqing Liu 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 | Chunqing Liu Applications Filed | Chunqing Liu Patents Granted |
| 2023 | – | 1 |
| 2022 | 11 | 17 |
| 2021 | 21 | 12 |
| 2020 | 5 | 18 |
| 2019 | 18 | 15 |
| 2018 | 39 | 5 |
| 2017 | 30 | 8 |
| 2016 | 10 | 22 |
| 2015 | 21 | 17 |
| 2014 | 30 | 20 |
| 2013 | 26 | 13 |
| 2012 | 25 | 11 |
How many Chunqing Liu patents are Alive/Dead?
How Many Patents did Chunqing Liu File in Different Countries?
Countries in which Chunqing Liu Filed Patents
| Country | Patents |
| United States Of America | 154 |
| China | 33 |
| Malaysia | 22 |
| Europe | 21 |
| Japan | 16 |
| Canada | 14 |
| Brazil | 12 |
| Korea (South) | 12 |
| Australia | 10 |
| Russia | 7 |
| Saudi Arabia | 2 |
| Argentina | 2 |
| Singapore | 2 |
| India | 1 |
| Taiwan | 1 |
Where are Research Centres of Chunqing Liu Patents Located?
10 Best Chunqing Liu Patents
US20090277837A1 is the most popular patent in the Chunqing Liu portfolio. It has received 122 citations so far from companies like Siluria Technologies, Inc, Uop Llc, Inc, and Lummus Technology Llc.
Below is the list of 10 most cited patents of Chunqing Liu:
| Publication Number | Citation Count |
| US20090277837A1 | 122 |
| US7410525B1 | 113 |
| US7637983B1 | 111 |
| US8127937B2 | 78 |
| US8127936B2 | 77 |
| US7485173B1 | 66 |
| US7943543B1 | 63 |
| US20090114089A1 | 58 |
| US7758751B1 | 53 |
| US20090149565A1 | 44 |
How many inventions of other companies were rejected due to Chunqing Liu patents?
The statistics below share strategic R&D insights. It tells the companies that were trying to protect inventions similar to Chunqing Liu invention. They couldn’t because Chunqing Liu had protected those before them.
Examiners at the USPTO used 65 Chunqing Liu patents in 339 rejections (35 USC § 102 or 35 USC § 103 types).
The top companies whose faced patents application rejections citing Chunqing Liu patent portfolio are Honeywell, Fujifilm, and Ube Corp.
List of the Companies whose Patents were rejected citing Chunqing Liu –
| Company | Number of Patent Applications that faced Rejection Citing Chunqing Liu Patents | Number of Rejections (102 & 103) |
| Honeywell | 42 | 91 |
| Fujifilm | 6 | 9 |
| Ube Corp | 6 | 8 |
| 3M | 5 | 5 |
| Utc Aerospace Systems | 5 | 12 |
| Sabic Global Technologies Bv | 5 | 19 |
| Air Liquide | 5 | 7 |
| Samsung Electronics | 2 | 3 |
| Shin Etsu Polymer Co Ltd | 1 | 1 |
| Dow Global Technologies Inc | 1 | 3 |
Count of 102 and 103 Type Rejections based on Chunqing Liu Patents
Top Chunqing Liu Patents used in Rejecting Most Patent Applications
| Patent Number | Count of Rejected Applications |
| US20090277837A1 | 16 |
| US8366804B2 | 16 |
| US7637983B1 | 8 |
| US7758751B1 | 7 |
| US10471381B2 | 6 |
| US8016124B2 | 5 |
| US8613362B2 | 5 |
| US20090114089A1 | 5 |
| US8048198B2 | 4 |
| US8704030B2 | 4 |
| US8710173B2 | 4 |
| US20090126567A1 | 4 |
| US8561812B2 | 3 |
| US8337598B2 | 3 |
| US8083833B2 | 3 |