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Category	Title ↑	Patent Number	Issue Date	Assignee
Database and Data Handling	Efficient group by aggregation in tournament tree sort	US6282541	08-28-2001	IBM
Internet, eCommerce, and Industry Specific	Efficient method for designing slabs for production from an order book	US6321132	11-20-2001	IBM
Software Development & Object Technology	Efficient method router that supports multiple simultaneous object versions	US5644771	07-01-1997	IBM
Networking and Network Management	Encryption of low data content ATM cells	US5642421	06-24-1997	IBM
Database and Data Handling	Enumerating projections in SQL queries containing outer and full outer joins in the presence of inner joins	US5687362	11-11-1997	IBM
Storage Management	Even/odd cache directory mechanism	US6212616	04-03-2001	IBM
Data Processing Programming	Exception handling method and apparatus for a microkernel data processing system	US5606696	02-25-1997	IBM
Database and Data Handling	Facility for the intelligent selection of information objects	US6208989	03-27-2001	IBM
Storage Management	Flexible cache-coherency mechanism	US6202132	03-13-2001	IBM
Miscellaneous	Floating point arithmetic two cycle data flow	US5212662	05-18-1993	IBM

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