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USPTO Patent Rankings Data through Dec 31, 2025
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William E. Hammer — 9 Patents

IBM: 9 patents #11,946 of 70,183Top 20%
Rochester, MN: #614 of 3,042 inventorsTop 25%
Minnesota: #8,400 of 52,454 inventorsTop 20%
Overall (All Time): #535,341 of 4,157,543Top 15%
9 Patents All Time
William E. Hammer has been granted 9 US patents while listed as an inventor at IBM. The first was granted in 1980 and the most recent in December 1996. William E. Hammer ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list William E. Hammer in Rochester, MN, US.

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5584033 Apparatus and method for burst data transfer employing a pause at fixed data intervals Wayne M. Barrett, Bruce Beukema, Daniel F. Moertl 1996-12-10 $30,114,000
5257374 Bus flow control mechanism Walter H. Schwane, Frederick J. Ziecina 1993-10-26 $7,840,000
5218713 Distributed data management mechanism for handling a data stream Walter H. Schwane, Frederick J. Ziecina 1993-06-08 $14,849,000
5204954 Remote storage management mechanism and method Walter H. Schwane, Frederick J. Ziecina 1993-04-20 $8,588,000
5058056 Workstation takeover control Harold F. Kossman 1991-10-15 $13,216,000
5056003 Distributed data management mechanism Walter H. Schwane, Frederick J. Ziecina 1991-10-08 $19,888,000
4930069 Mechanism and method for transferring data between bus units having varying master and slave DMA capabilities Surinder P. Batra, Gene A. Lushinsky, David W. Marquart, Walter H. Schwane, Frederick J. Ziecina 1990-05-29 $27,786,000
4649473 Flexible data transmission for message based protocols Walter H. Schwane, Frederick J. Ziecina 1987-03-10 $23,342,000
4231088 Allocating and resolving next virtual pages for input/output David Otto Lewis, John W. Reed, Thomas S. Robinson, Keith K. Slack 1980-10-28 $25,319,000