Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
DB

David S. Buchanan

BTBiomagnetic Technologies: 3 patents #14 of 40Top 35%
San Diego, CA: #9,825 of 23,606 inventorsTop 45%
California: #149,087 of 386,348 inventorsTop 40%
Overall (All Time): #1,662,730 of 4,157,543Top 40%
3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5158932 Superconducting biomagnetometer with inductively coupled pickup coil Waldo S. Hinshaw, Douglas N. Paulson, Eugene C. Hirschkoff, Mark S. DiIorio, William C. Black 1992-10-27
5061680 Superconducting biomagnetometer with remote pickup coil Douglas N. Paulson, Eugene C. Hirschkoff, Mark S. DiIorio, William C. Black 1991-10-29
5043529 Construction of shielded rooms using sealants that prevent electromagnetic and magnetic field leakage Frank W. Vanesky, James R. Marsden 1991-08-27