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Inventor

Qi Cheng

Inventor
North York, CA

Overview

13→
Patents
2007–2018
Patent span
Physics
Primary field (CPC G)

Patents· 13 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G06Fprimary
G06FElectric digital data processing62%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests29%
H04LTransmission of digital information, e.g. telegraphic communication10%
PatentTitleYear
10,157,204Generating statistical views in a database system201810,140,330Data consistency maintenance for sequential requests201810,129,364Data consistency maintenance for sequential requests20189,727,608'Generating statistical views in a database system'20178,626,744'Executing CASE expressions containing subqueries'20147,966,314'System for aggregation subquery join elimination'20117,945,557'Method, system, and program for query optimization with algebraic rules'20117,917,502'Optimized collection of just-in-time statistics for database query optimization'20117,788,241'Method for reducing overhead of validating constraints in a database'20107,454,416'Method for aggregation subquery join elimination'20087,275,056'System and method for transforming queries using window aggregation'20077,240,078'Method, system, and program for query optimization with algebraic rules'20077,188,116'Method and apparatus for deleting data in a database'2007

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2007–2018Patents assigned to IBM (13)· patent assignee history
2007–2014Based in North York, CA· patent location history
2007–2011Based in Markham, CA· patent location history
2014–2017Patents assigned to CHENG QI (2)· patent assignee history
2014–2017Patents assigned to HORNIBROOK JOHN F (2)· patent assignee history
2014–2017Patents assigned to ZUZARTE CALISTO P (2)· patent assignee history
2017Patents assigned to LEUNG TING Y (1)· patent assignee history
2017–2018Based in Toronto, CA· patent location history
2018Based in Beijing, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
IBM132007–2018
CHENG QIself22014–2017
HORNIBROOK JOHN F22014–2017
ZUZARTE CALISTO P22014–2017
LEUNG TING Y12017
Locations
LocationPatentsSpan
North York, CA62007–2014
Markham, CA32007–2011
Toronto, CA22017–2018
Beijing, CN22018