Patent assignee · JP · COMPANY

Hitachi Construction Machinery Tierra Co., Ltd.

57Patents
57Active
57Granted
55Portfolio score

Filing activity: Dec 24, 2012 → Dec 29, 2022

Most-cited patents

PatentTitleAreaCited byStatus
US9975522B2 Construction machine Electricity 12 Active
US9890801B2 Hydraulic drive system for construction machine Mechanical Engineering; Lighting; Heating 7 Active
US10100495B2 Hydraulic driving system for construction machine Mechanical Engineering; Lighting; Heating 5 Active
US9845589B2 Hydraulic drive system for construction machine Mechanical Engineering; Lighting; Heating 5 Active
US10215198B2 Hydraulic drive system for construction machine Mechanical Engineering; Lighting; Heating 4 Active
US9963856B2 Hydraulic drive system for construction machine Mechanical Engineering; Lighting; Heating 4 Active
US9976283B2 Hydraulic drive system for construction machine Mechanical Engineering; Lighting; Heating 4 Active
US10107311B2 Hydraulic drive system for construction machine Mechanical Engineering; Lighting; Heating 3 Active
US9835180B2 Hydraulic drive system for construction machine Mechanical Engineering; Lighting; Heating 2 Active
US10036136B2 Small-sized hydraulic excavator Fixed Constructions 2 Active
US9702379B2 Hybrid working machine Emerging Cross-Sectional Technologies 2 Active
US11332911B2 Construction machine Mechanical Engineering; Lighting; Heating 2 Active
US11214940B2 Hydraulic drive system for construction machine Mechanical Engineering; Lighting; Heating 2 Active
US10995474B2 Construction machine Mechanical Engineering; Lighting; Heating 2 Active
US10280592B2 Hydraulic drive system for electrically-operated hydraulic work machine Mechanical Engineering; Lighting; Heating 2 Active
US10988914B2 Hybrid work machine Emerging Cross-Sectional Technologies 2 Active
US9889750B2 Electric construction machine Emerging Cross-Sectional Technologies 2 Active
US10060451B2 Hydraulic drive system for construction machine Mechanical Engineering; Lighting; Heating 2 Active
US11939745B2 Electrically driven construction machine Emerging Cross-Sectional Technologies 1 Active
US10458160B2 Small-sized construction machine Fixed Constructions 1 Active
US11280059B2 Hydraulic drive system for construction machine Fixed Constructions 1 Active
US10961689B2 Small-sized construction machine with heat exchanger cover Fixed Constructions 1 Active
US10655647B2 Hydraulic drive system for construction machine Mechanical Engineering; Lighting; Heating 1 Active
US10267017B2 Small-sized construction machine Fixed Constructions 1 Active
US11352765B2 Construction machine with engine restart section and horn switch and gate lock lever operations Mechanical Engineering; Lighting; Heating 1 Active

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