Patent assignee · US · COMPANY

Longyear TM, Inc.

144Patents
125Active
144Granted
57Portfolio score

Filing activity: Dec 14, 2006 → Aug 4, 2021 · 60 expiring within 5 years

Most-cited patents

PatentTitleAreaCited byStatus
US7695542B2 Fiber-containing diamond-impregnated cutting tools Emerging Cross-Sectional Technologies 102 Active
US8291791B2 Open-faced rod spinning device Fixed Constructions 73 Active
US7828090B2 Drill bits with enclosed fluid slots and internal flutes Fixed Constructions 34 Active
USD650052S1 Seal for head assembly General 31 Expired
US7628228B2 Core drill bit with extended crown height Fixed Constructions 30 Active
US7900716B2 Vibratory unit for drilling systems Fixed Constructions 27 Active
US7828079B2 Sonic wireline dry slough barrel Fixed Constructions 27 Active
US8186926B2 Drill rod handler Fixed Constructions 27 Active
US8186925B2 Drill rod handler Fixed Constructions 26 Active
US7918288B2 Drill bits with enclosed fluid slots and method Fixed Constructions 25 Active
US8051929B2 Core drill bits with enclosed fluid slots Fixed Constructions 25 Active
USD622293S1 Spearhead General 23 Expired
USD624564S1 Spearhead base General 22 Expired
USD622294S1 Spearhead base General 22 Expired
USD622741S1 Spearhead General 22 Expired
USD630656S1 Drill bit General 21 Expired
US7967085B2 Braking devices for use in drilling operations Fixed Constructions 20 Active
USD676877S1 Tube loader General 19 Active
US8079647B2 Vibratory milling machine having linear reciprocating motion Fixed Constructions 19 Active
US8459381B2 Drill bits with axially-tapered waterways Emerging Cross-Sectional Technologies 18 Active
USD644673S1 Core lifter General 18 Expired
USD648836S1 Seal for head assembly General 16 Expired
US7997167B2 Clamping and breaking device Fixed Constructions 15 Active
US10384907B2 Wireline system and methods of using same Fixed Constructions 15 Active
USD647115S1 Drill bit waterway General 14 Expired

Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.