David E. Walrath — 12 Patents at Sybase

David E. Walrath has been granted 12 US patents while listed as an inventor at Sybase. The first was granted in 2000 and the most recent in May 2020. David E. Walrath ranks #396,045 of 4,157,543 US inventors in our database (top 9.5%). Patent records list David E. Walrath in Stow, MA, US.

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
10642833	Accelerating database queries using composite union enumeration	Steven A. Kirk, Roland F. McKenney	2020-05-05
10467228	Accelerating database queries using equivalence union enumeration	Steven A. Kirk, Roland F. McKenney	2019-11-05
9317556	Accelerating database queries containing bitmap-based conditions	Steven A. Kirk	2016-04-19
9305080	Accelerating queries using delayed value projection of enumerated storage	Steven A. Kirk, Fang-Ying Yen, Roger MacNicol	2016-04-05
8548980	Accelerating queries based on exact knowledge of specific rows satisfying local conditions	Steven A. Kirk	2013-10-01
8321476	Method and system for determining boundary values dynamically defining key value bounds of two or more disjoint subsets of sort run-based parallel processing of data from databases	Steven A. Kirk, Kurt Deschler	2012-11-27
8321429	Accelerating queries using secondary semantic column enumeration	Steven A. Kirk, Roland F. McKenney, Roger MacNicol	2012-11-27
7672925	Accelerating queries using temporary enumeration representation	Steven A. Kirk, Roland F. McKenney	2010-03-02	$18,283,000
6557576	Apparatus and method of flow control through a valve	William R. Lindberg, Robert K. Burgess	2003-05-06
6279595	Increased flow, split venturi valve system	William R. Lindberg, Robert K. Burgess	2001-08-28
6109293	Split venturi, axially-rotated valve	William R. Lindberg, Robert K. Burgess	2000-08-29
6026845	Flow, split Venturi, axially-rotated valve	William R. Lindberg, Robert K. Burgess, James LaBelle	2000-02-22

David E. Walrath — 12 Patents

Issued Patents All Time

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