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

Katharine A. Muirhead — 4 Patents

ZYZynaxis: 2 patents #2 of 15Top 15%
SBSmithkline Beckman: 1 patents #87 of 166Top 55%
West Chester, PA: #423 of 1,305 inventorsTop 35%
Pennsylvania: #19,360 of 74,527 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Katharine A. Muirhead has been granted 4 US patents while listed as an inventor at Zynaxis. The first was granted in 1989 and the most recent in September 1997. Katharine A. Muirhead ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Katharine A. Muirhead in West Chester, PA, US.

Patents per Year

Patents granted per year, 1989 to 1997Bar chart with a peak of 1 patents in 1989.peak 11989: 1 patents19891993: 1 patents19931995: 1 patents19951997: 1 patents1997

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5667764 Compounds, compositions and methods for binding bio-affecting substances to surface membranes of bio-particles Gregory A. Kopia, Paul K. Horan, Brian D. Gray, David E. Troutner, Kamleshkumar A. Sheth +4 more 1997-09-16
5385822 Methods for detection and quantification of cell subsets within subpopulations of a mixed cell population Meryle J. Melnicoff, Bruce D. Jensen, Paul K. Horan, Martin D. Summers, William Wong 1995-01-31 $271,000
5256532 Methods, reagents and test kits for determination of subpopulations of biological entities Meryle J. Melnicoff, Paul K. Horan 1993-10-26
4849362 Fluorescent intracellular calcium indicators Robert M. DeMarinis, Haralambos E. Katerinopoulos 1989-07-18 $50,258,000