Inventor · Rolesville, NC, US

John Wright Porterfield, Jr.

16Patents
4h-index
18Co-inventors
53Inventor score

Filing activity: Oct 25, 2011 → Nov 29, 2023

Most-cited inventions

PatentTitleAreaCited byStatus
US9302128B2 Automatic fire extinguishing system with internal dip tube Human Necessities 5 Active
US9192798B2 Automatic fire extinguishing system with gaseous and dry powder fire suppression agents Human Necessities 4 Active
US9309981B2 Poppet valve with a frangible sealing disc for a pressure vessel Emerging Cross-Sectional Technologies 4 Active
US9038742B2 Suppressant actuator Human Necessities 4 Active
US9649520B2 Burst disc puncture pressure-imbalance actuator for a fire extinguisher Mechanical Engineering; Lighting; Heating 3 Active
US9539452B2 Rapid pressure diffusion actuator for a fire extinguisher Human Necessities 2 Active
US9308406B2 Automatic fire extinguishing system having outlet dimensions sized relative to propellant gas pressure Human Necessities 2 Active
US10226656B2 Automatic fire extinguisher system having a safety assembly Human Necessities 1 Active
US10987530B2 Automatic fire extinguisher system having a safety assembly Human Necessities 0 Active
US9821183B2 Motorized actuator for a fire extinguisher Human Necessities 0 Active
US9463341B2 N2/CO2 fire extinguishing system propellant gas mixture Human Necessities 0 Active
US12306066B2 Ducted gas detector Emerging Cross-Sectional Technologies 0 Active
US9861846B2 Spring-collet mechanism for activating a fire extinguisher Human Necessities 0 Active
US12186607B2 Ullage pressure-driven valve for fire suppression Human Necessities 0 Active
US10870026B2 Spring-collet mechanism for activating a fire extinguisher Human Necessities 0 Active
US11865385B2 Ullage pressure-driven valve for fire suppression Human Necessities 0 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.