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

Ravishankar Ramamurthy — 30 Patents

Microsoft: 20 patents #1,724 of 40,388Top 5%
DDDetroit Diesel: 5 patents #25 of 181Top 15%
General Motors: 4 patents #3,757 of 18,328Top 25%
Redmond, WA: #312 of 8,547 inventorsTop 4%
Washington: #2,583 of 76,902 inventorsTop 4%
Overall (All Time): #121,623 of 4,157,543Top 3%
30 Patents All Time
Ravishankar Ramamurthy has been granted 30 US patents while listed as an inventor at Microsoft. The first was granted in 2004 and the most recent in December 2025. Ravishankar Ramamurthy ranks #121,623 of 4,157,543 US inventors in our database (top 2.9%). Patent records list Ravishankar Ramamurthy in Redmond, WA, US.

Patents per Year

Patents granted per year, 2004 to 2023Bar chart with a peak of 3 patents in 2012.peak 32004: 2 patents20042005: 1 patents2006: 1 patents20062008: 2 patents2009: 2 patents20092010: 2 patents2011: 2 patents20112012: 3 patents2014: 2 patents20142015: 2 patents2017: 1 patents20172018: 2 patents2019: 2 patents20192020: 3 patents2022: 1 patents20222023: 1 patents2023

Issued Patents All Time

Showing 1–25 of 30 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12493532 System and method for database recovery for encrypted indexes Panagiotis Antonopoulos, Arvind Arasu, Nitinkumar H. Gupta, Rakhi Jain, Raghav Kaushik +5 more 2025-12-09
11849045 Controlling verification of key-value stores Arvind Arasu, Kenneth Eguro, Raghav Kaushik, Donald Kossmann, Pingfan Meng +1 more 2023-12-19 $382,128,000
11232214 Secure data processing on sensitive data using trusted hardware Shriraghav Kaushik, Arvind Arasu, Spyridon Blanas, Kenneth Eguro, Manas Rajendra Joglekar +3 more 2022-01-25 $273,369,000
10838957 Slicing relational queries using spool operators Nicolas Bruno, Surajit Chaudhuri, Vivek Narasayya 2020-11-17 $148,442,000
10671736 Secure data processing on sensitive data using trusted hardware Shriraghav Kaushik, Arvind Arasu, Spyridon Blanas, Kenneth Eguro, Manas Rajendra Joglekar +3 more 2020-06-02 $84,040,000
10572442 Systems and methods for providing distributed tree traversal using hardware-based processing Kenneth Eguro, Zsolt Istvan, Arvind Arasu, Kaushik Shriraghav 2020-02-25 $60,478,000
10496833 Controlling secure processing of confidential data in untrusted devices Arvind Arasu, Kenneth Eguro, Manas Rajendra Joglekar, Raghav Kaushik, Donald Kossmann 2019-12-03 $60,713,000
10396991 Controlling verification of key-value stores Arvind Arasu, Kenneth Eguro, Raghav Kaushik, Donald Kossmann, Pingfan Meng +1 more 2019-08-27 $69,371,000
10073981 Controlling secure processing of confidential data in untrusted devices Arvind Arasu, Kenneth Eguro, Manas Rajendra Joglekar, Raghav Kaushik, Donald Kossmann 2018-09-11 $66,069,000
9953184 Customized trusted computer for secure data processing and storage Arvind Arasu, Kenneth Eguro, Kaushik Shriraghav 2018-04-24 $35,451,000
9747456 Secure query processing over encrypted data Arvind Arasu, Shriraghav Kaushik 2017-08-29 $34,413,000
9213867 Secure cloud database platform with encrypted database queries Kenneth Eguro, Ramarathnam Venkatesan 2015-12-15 $73,493,000
8931265 Closed loop temperature control in the SCR warm up mode to reduce emission variation 2015-01-13 $7,812,000
8694551 Auditing queries using query differentials Kaushik Shiriraghav 2014-04-08
8630998 Framework for testing query transformation rules Vivek Narasayya, Hicham G. Elmongui 2014-01-14 $40,580,000
8190595 Flexible query hints in a relational database Nicolas Bruno, Surajit Chaudhuri 2012-05-29 $15,522,000
8185519 Techniques for exact cardinality query optimization Surajit Chaudhuri, Vivek Narasayya 2012-05-22 $19,852,000
8108154 NOx emission estimation systems and methods Shouxian Ren 2012-01-31 $9,792,000
7987672 Turbocharger protection systems and methods 2011-08-02 $8,927,000
7958114 Detecting estimation errors in dictinct page counts Surajit Chaudhuri, Vivek Narasayya 2011-06-07 $21,540,000
7739269 Incremental repair of query plans Surajit Chaudhuri 2010-06-15 $15,264,000
7685194 Fine-grained access control in a database by preventing information leakage and removing redundancy Govind Kabra, Sundararajarao Sudarshan 2010-03-23 $19,870,000
7637107 Engine backpressure compensation system for stable emissions 2009-12-29
7493337 Query progress estimation Surajit Chaudhuri, Vivek Narasayya 2009-02-17 $27,209,000
7454407 Techniques for estimating progress of database queries Surajit Chaudhuri, Kaushik Shriraghav 2008-11-18 $21,361,000