Assignee
PROTECTOSEAL CO
12 patents
Top patents by PatentIndex Score
US4006780AFeb 8, 1977
Rupturing head for fire extinguishers
PROTECTOSEAL CO71 citations92
US5795043AAug 18, 1998
Corrosion-resistant storage cabinet
PROTECTOSEAL CO40 citations91
US7056114B2Jun 6, 2006
Flame arrestor with reflection suppressor
PROTECTOSEAL CO21 citations88
US6056005AMay 2, 2000
Vent valve with liquid seal
PROTECTOSEAL CO44 citations87
US4121632AOct 24, 1978
Fire extinguisher cylinder filling station
PROTECTOSEAL CO22 citations78
US4280679AJul 28, 1981
Dually-operated tank car bottom unloading valve
PROTECTOSEAL CO24 citations75
US6644961B2Nov 11, 2003
Flame arrestor with reflection suppressor
PROTECTOSEAL CO12 citations69
US6244457B1Jun 12, 2001
Gauge hatch with diaphragm and liquid seal
PROTECTOSEAL CO14 citations69
US4138037AFeb 6, 1979
Tilt can
PROTECTOSEAL CO7 citations69
US5660204AAug 26, 1997
Tank blanketing valve
PROTECTOSEAL CO13 citations63
US6629621B1Oct 7, 2003
Gauge hatch with liquid seal
PROTECTOSEAL CO4 citations57
US7390190B2Jun 24, 2008
Flame arrestor with reflection suppressor
PROTECTOSEAL CO0 citations48