Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
DM

David W. Marquart — 4 Patents

IBM: 4 patents #21,783 of 70,183Top 35%
Rochester, MN: #1,089 of 3,042 inventorsTop 40%
Minnesota: #16,016 of 52,454 inventorsTop 35%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
David W. Marquart has been granted 4 US patents while listed as an inventor at IBM. The first was granted in 1990 and the most recent in July 1997. David W. Marquart ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list David W. Marquart in Rochester, MN, US.

Patents per Year

Patents granted per year, 1990 to 1997Bar chart with a peak of 2 patents in 1992.peak 21990: 1 patents19901992: 2 patents19921997: 1 patents1997

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5649177 Control logic for very fast clock speeds Lyle Edwin Grosbach, David J. Krolak 1997-07-15 $19,227,000
5146605 Direct control facility for multiprocessor network Bruce Beukema, Ronald D. Morse 1992-09-08 $7,859,000
5079725 Chip identification method for use with scan design systems and scan testing techniques Charles P. Geer 1992-01-07 $20,447,000
4930069 Mechanism and method for transferring data between bus units having varying master and slave DMA capabilities Surinder P. Batra, William E. Hammer, Gene A. Lushinsky, Walter H. Schwane, Frederick J. Ziecina 1990-05-29 $27,786,000