Inventor
Fred Koo
Inventor
Thornhill, CA
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G06Fprimary
G06FElectric digital data processing50%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests50%
PatentTitleYear
7,587,383'Redundant join elimination and sub-query elimination using subsumption'20096,983,275'Optimizing database query by generating, determining the type of derived predicate based on monotonicity of the column generating expression for each remaining inequality predicate in the list of unexamined predicates'20066,601,063'Method of optimally determining lossless joins'20036,438,542'Method of optimally determining lossless joins'20025,970,495'Method and apparatus for achieving uniform data distribution in a parallel database system'19995,878,409'Method and apparatus for implementing partial declustering in a parallel database system'1999Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1999–2009Patents assigned to IBM (6)· patent assignee history
1999Based in North York, CA· patent location history
2002–2009Based in Thornhill, CA· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| IBM | 6 | 1999–2009 |
Locations
| Location | Patents | Span |
|---|---|---|
| Thornhill, CA | 4 | 2002–2009 |
| North York, CA | 2 | 1999 |