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

Marsha E. Ferree — 3 Patents

IBM: 3 patents #26,335 of 70,183Top 40%
Raleigh, NC: #2,363 of 6,378 inventorsTop 40%
North Carolina: #14,708 of 45,564 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Marsha E. Ferree has been granted 3 US patents while listed as an inventor at IBM. The first was granted in 1990 and the most recent in January 1996. Marsha E. Ferree ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Marsha E. Ferree in Raleigh, NC, US.

Patents per Year

Patents granted per year, 1990 to 1996Bar chart with a peak of 1 patents in 1990.peak 11990: 1 patents19901991: 1 patents19911996: 1 patents1996

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5488703 System for establishing and performing multiple conversations simultaneously between transaction programs through logical units James P. Gray 1996-01-30 $12,480,000
5051892 Full duplex conversation between transaction programs James P. Gray, Mark Pozefsky, John F. Wilder 1991-09-24 $15,462,000
4972437 Method of controlling limited resource sessions in a data communications network Andrew P. Citron, John E. Drake, John E. Fetvedt, James P. Gray, Zvonimir Ordanic 1990-11-20 $11,140,000