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

Xun Cheng — 28 Patents

SYSybase: 12 patents #5 of 384Top 2%
Google: 7 patents #3,814 of 22,993Top 20%
PMPmc-Sierra: 5 patents #47 of 382Top 15%
Sap Se: 3 patents #1,197 of 6,322Top 20%
Dublin, CA: #75 of 1,312 inventorsTop 6%
California: #19,067 of 386,348 inventorsTop 5%
Overall (All Time): #134,628 of 4,157,543Top 4%
28 Patents All Time
Xun Cheng has been granted 28 US patents while listed as an inventor at Sybase. The first was granted in 2008 and the most recent in August 2025. Xun Cheng ranks #134,628 of 4,157,543 US inventors in our database (top 3.2%). Patent records list Xun Cheng in Dublin, CA, US.

Patents per Year

Patents granted per year, 2008 to 2025Bar chart with a peak of 4 patents in 2017.peak 42008: 1 patents20082010: 3 patents2011: 2 patents20112015: 2 patents2016: 1 patents20162017: 4 patents2018: 1 patents20182019: 1 patents2020: 2 patents20202022: 4 patents2023: 2 patents20232024: 3 patents2025: 2 patents2025

Issued Patents All Time

Showing 1–25 of 28 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12380109 Database join operations with early filtering Xiaobin Ma 2025-08-05
12292887 Columnar cache query using hybrid query execution plan Xiaobin Ma, Viral Shah, Anjan Kumar Amirishetty 2025-05-06
12130814 Late materialization of queried data in database cache Xiaobin Ma, Viral Shah, Anjan Kumar Amirishetty 2024-10-29 $126,209,000
12124376 Elastic columnar cache for cloud databases Anjan Kumar Amirishetty, Viral Shah 2024-10-22 $118,222,000
12038894 Evaluating row-store expressions on a column-store database Viral Shah, Xiaobin Ma, Haoyu Huang, Anjan Kumar Amirishetty 2024-07-16 $98,172,000
11782921 Columnar cache query using hybrid query execution plan Xiaobin Ma, Viral Shah, Anjan Kumar Amirishetty 2023-10-10 $80,003,000
11625384 Constraint data statistics for dynamic partition pruning Reza Sherkat, Anisoara Nica, Prabhas Kumar Samanta, Mihnea Andrei 2023-04-11 $4,648,000
11468093 Synopsis based advanced partition elimination Christian Bensberg, Alexander Boehm, Adrian Dragusanu, Reza Sherkat, Anisoara Nica +1 more 2022-10-11 $2,698,000
11429610 Scaled-out query execution engine Zhen Tian, Yuncong Qiao, Faming Qu, Paul Willems, Hongyong Lu +2 more 2022-08-30 $2,332,000
11341132 Generating a producer-driven execution plan from a consumer-driven iterator-based execution plan Xiaobin Ma, Prabhas Kumar Samanta 2022-05-24
11334489 Elastic columnar cache for cloud databases Anjan Kumar Amirishetty, Viral Shah 2022-05-17 $65,297,000
10817514 Splitting of a join operation to allow parallelization Peter Schneider 2020-10-27
10664475 Generating a native access plan for semi join operators Xiaobin Ma 2020-05-26
10503481 Generating a native access plan for dynamic entity calling Xiaobin Ma 2019-12-10
10133777 Eliminating redundancy when generating intermediate representation code Xiaobin Ma 2018-11-20
9836505 Star and snowflake join query performance Peter Schneider 2017-12-05
9792328 Splitting of a join operation to allow parallelization Peter Schneider 2017-10-17
9778918 Native access plan source code generation Xiaobin Ma, Prabhas Kumar Samanta 2017-10-03
9703825 Maintenance of a pre-computed result set Xiao-Ming Zhou, Haiyan Du, Nitesh Maheshwari, Prabhas Kumar Samanta 2017-07-11
9454574 Bloom filter costing estimation 2016-09-27
9213740 System and methodology for automatic tuning of database query optimizer Mihnea Andrei, Edwin Anthony Seputis, Xiao-Ming Zhou 2015-12-15
9075858 Non-disruptive data movement and node rebalancing in extreme OLTP environments Mihnea Andre, Yanhong Wang, Elton Philip Wildermuth, Heping Shang, Stephen C. Shepherd 2015-07-07
8080832 Semiconductor device for electrostatic discharge protection Graeme B. Boyd, Ariel Deneb Edward Sibley 2011-12-20 $4,258,000
7985644 Methods for forming fully segmented salicide ballasting (FSSB) in the source and/or drain region Graeme B. Boyd, William Michael Lye 2011-07-26 $5,442,000
7777248 Semiconductor device for latch-up prevention Graeme B. Boyd, Ariel Deneb Edward Sibley 2010-08-17 $10,586,000