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

John A. Chakel

HPHP: 2 patents #2,312 of 7,018Top 35%
ATAgilent Technologies: 1 patents #1,723 of 3,411Top 55%
San Mateo, CA: #1,620 of 3,727 inventorsTop 45%
California: #149,087 of 386,348 inventorsTop 40%
Overall (All Time): #1,618,474 of 4,157,543Top 40%
3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6459080 Miniaturized device for separating the constituents of a sample and delivering the constituents of the separated sample to a mass spectrometer Hongfeng Yin, Sally A. Swedberg 2002-10-01
5716825 Integrated nucleic acid analysis system for MALDI-TOF MS William S. Hancock, James Apffel, Kay Lichtenwalter 1998-02-10
5705813 Integrated planar liquid handling system for maldi-TOF MS James Apffel, William S. Hancock, Kay Lichtenwalter 1998-01-06