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

John O'Sullivan — 5 Patents

FLFerfics Limited: 4 patents #2 of 6Top 35%
FCFox Broadcasting Company: 1 patents #21 of 32Top 70%
Cork, IE: #96 of 543 inventorsTop 20%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
John O'Sullivan has been granted 5 US patents while listed as an inventor at Ferfics Limited. The first was granted in 2004 and the most recent in November 2018. John O'Sullivan ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list John O'Sullivan in Cork, IE.

Patents per Year

Patents granted per year, 2004 to 2018Bar chart with a peak of 2 patents in 2016.peak 22004: 1 patents20042016: 2 patents20162018: 2 patents2018

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
10135438 Switching system and method Eugene Heaney, Stephen Kenney 2018-11-20
9935092 Radio frequency transistor stack with improved linearity John Anthony Keane 2018-04-03
9524985 Switching system and method Eugene Heaney, Stephen N. Keeney 2016-12-20
9520251 RF switch with inter-domain ESD protection John Anthony Keane, Ian O'Regan 2016-12-13
6686890 Slot-array antennas with shaped radiation patterns and a method for the design thereof Geoffrey James, Francis Cooray, Trevor Stanley Bird, R. Evans Wetmore 2004-02-03