Granted Patent
Utility
US 6,263,364 · App. 09/433,007
Web crawler system using plurality of parallel priority level queues having distinct associated download priority levels for prioritizing document downloading and maintaining document freshness
Inventors:
Marc Alexander Najork, Clark Allan Heydon, Janet L. Wiener
Patented Case
View Patent ↗
Granted: Jul 17, 2001
Filed: Nov 2, 1999
Inventors
Marc Alexander Najork
Clark Allan Heydon
Janet L. Wiener
Assignee (at issue)
Alta Vista Company
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.