Assignee
HALLSTEN CORP
US19 patents
Top patents by PatentIndex Score
US5454195AOct 3, 1995
Modular containment system for hazardous materials
HALLSTEN CORP124 citations97
US5689920ANov 25, 1997
Modular containment system for hazardous materials
HALLSTEN CORP55 citations96
US6255102B1Jul 3, 2001
Modular support for biofiltration
HALLSTEN CORP29 citations92
US5941027AAug 24, 1999
Access panel on deck structure
HALLSTEN CORP45 citations92
US5911662AJun 15, 1999
Tank cover structure
HALLSTEN CORP25 citations92
US5617677AApr 8, 1997
Tank or channel cover
HALLSTEN CORP23 citations92
US5526620AJun 18, 1996
Tank cover structure with odor exhaust system
HALLSTEN CORP39 citations92
US5845594ADec 8, 1998
Dock structure
HALLSTEN CORP47 citations87
US6802157B2Oct 12, 2004
Tank cover system with substantial gas seal
HALLSTEN CORP13 citations84
US6151835ANov 28, 2000
Tank cover structure
HALLSTEN CORP8 citations73
US6012259AJan 11, 2000
Tank cover structure
HALLSTEN CORP7 citations73
USD359565SJun 20, 1995
Extruded metal structural connecting member for securing planks to beams in an interlocking field-erectable deck or cover structure
HALLSTEN CORP8 citations73
USD358671SMay 23, 1995
Extruded metal beam tube for an interlocking field-erectable deck or cover structure
HALLSTEN CORP6 citations73
US10329812B1Jun 25, 2019
Tank cover access hatch with safety barrier
HALLSTEN CORP4 citations67
US7713732B1May 11, 2010
High strength modular support for biofiltration and composting
HALLSTEN CORP3 citations62
US5545358AAug 13, 1996
Tank cover structure with aeration distribution
HALLSTEN CORP2 citations61
US10227799B1Mar 12, 2019
Slide lock for hatch on gas containment cover
HALLSTEN CORP1 citations56
US10124291B1Nov 13, 2018
Trench spanning modules in a biofilter floor assembly
HALLSTEN CORP1 citations50
US7422895B1Sep 9, 2008
Biofilter or compost support assembly
HALLSTEN CORP6 citations46