Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
QC

Qifan Chen — 27 Patents

Qualcomm: 16 patents #1,365 of 12,104Top 15%
HEHewlett Packard Enterprise: 4 patents #683 of 4,473Top 20%
HP: 3 patents #5,824 of 16,619Top 40%
MFMicro Focus: 2 patents #137 of 713Top 20%
Newark, CA: #48 of 939 inventorsTop 6%
California: #19,967 of 386,348 inventorsTop 6%
Overall (All Time): #142,059 of 4,157,543Top 4%
27 Patents All Time
Qifan Chen has been granted 27 US patents while listed as an inventor at Qualcomm. The first was granted in 2012 and the most recent in October 2025. Qifan Chen ranks #142,059 of 4,157,543 US inventors in our database (top 3.4%). Patent records list Qifan Chen in Newark, CA, US.

Patents per Year

Patents granted per year, 2012 to 2025Bar chart with a peak of 4 patents in 2012.peak 42012: 4 patents20122013: 2 patents2014: 3 patents20142015: 1 patents2016: 3 patents20162018: 1 patents2019: 2 patents20192021: 1 patents2022: 1 patents20222023: 2 patents2024: 3 patents20242025: 4 patents2025

Issued Patents All Time

Showing 1–25 of 27 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12433260 Method for determining ecological flow process and water temperature process of habitat requirements of full life history of fish Jiancong Zhang, Yu-Che Lin, Tianjun Guan, Ruili Qiao 2025-10-07
12388593 Distributed transmission of short training fields Lin Yang, Bin Tian, Youhan Kim 2025-08-12
12368548 Long training field (LTF) in distributed transmission Lin Yang, Bin Tian, Youhan Kim 2025-07-22
12218884 Global cyclic shift delays for distributed transmissions Lin Yang, Bin Tian, Youhan Kim 2025-02-04
12184568 Pilot tones in distributed resource unit (DRU) transmission Lin Yang, Bin Tian, Youhan Kim 2024-12-31 $18,568,000
12058064 Long training field (LTF) in distributed transmission Lin Yang, Bin Tian, Youhan Kim 2024-08-06 $15,639,000
12052192 Distributed transmission of short training fields Lin Yang, Bin Tian, Youhan Kim 2024-07-30 $20,449,000
11838227 Pilot tones in distributed resource unit (dRU) transmission Lin Yang, Bin Tian, Youhan Kim 2023-12-05 $15,571,000
11711184 Long training field (LTF) in distributed transmission Lin Yang, Bin Tian, Youhan Kim 2023-07-25 $14,615,000
D966009 Storage rack 2022-10-11
10922314 Incrementally updating a database statistic Choudur Lakshminarayan 2021-02-16 $4,806,000
10452676 Managing database with counting bloom filters Ramakumar Kosuru, Choudur Lakshminarayan 2019-10-22 $4,962,000
10430411 Incrementally updating statistics Choudur Lakshminarayan, Ramakumar Kosuru, Hansjorg Zeller 2019-10-01 $8,700,000
9922080 Query plan determination Hao Qin, Taoufik Ben Abdellatif 2018-03-20 $8,294,000
9465826 Estimating unique entry counts using a counting bloom filter Choudur Lakshminarayan, Hansjorg Zeller, Ramakumar Kosuru 2016-10-11 $7,060,000
9429642 Radar detection for adjacent segments in wireless communications Meriam Khufu Ragheb Rezk, Kapil Rai 2016-08-30 $10,588,000
9348869 Data skew insensitive parallel join scheme Awny K. Al-Omari, Gregory S. Battas, Kashif A. Siddiqui, Michael J. Hanlon 2016-05-24 $8,229,000
9143967 Method and apparatus for determining distance in a Wi-Fi network Kai Shi, Ning Zhang 2015-09-22 $4,637,000
8812484 System and method for outer joins on a parallel database management system Awny K. Al-Omari 2014-08-19 $16,066,000
8799272 Data skew insensitive parallel join scheme Awny K. Al-Omari, Gregory S. Battas, Kashif A. Siddiqui, Michael J. Hanlon 2014-08-05 $9,528,000
8787191 Method and apparatus for determining distance in a Wi-Fi network Kai Shi, Ning Zhang 2014-07-22 $5,870,000
8565133 Synchronization-free station locator in wireless network Ning Zhang, James Simon Cho, William J. McFarland 2013-10-22 $8,430,000
8543883 Decoding low-density parity check (LDPC) codewords Ning Zhang 2013-09-24 $16,540,000
8286048 Dynamically scaled LLR for an LDPC decoder Ning Zhang 2012-10-09 $12,393,000
8233457 Synchronization-free station locator in wireless network Ning Zhang, James Simon Cho, William J. McFarland 2012-07-31 $28,164,000