Assignee
HITACHI BUILDING SYS CO LTD
JP·5 granted patents·64 citations·filing 1999–2002
Top patents by PatentIndex Score
5 records- 0179US7194415B2Support system for maintenance contract of elevatorHITACHI BUILDING SYS CO LTD·Filed 2001·Granted Mar 20, 2007·19 cites·17 claims
- 0258US6742634B2Magnetic brake system and elevator trouble detection systemHITACHI BUILDING SYS CO LTD·Filed 2002·Granted Jun 1, 2004·6 cites·4 claims
- 0356US6263696B1Air-cooled absorption type chiller heater and modification methodHITACHI BUILDING SYS CO LTD·Filed 2000·Granted Jul 24, 2001·13 cites·6 claims
- 0449US6701727B2Apparatus and method for managing heat source unit for air conditionerHITACHI BUILDING SYS CO LTD·Filed 2002·Granted Mar 9, 2004·9 cites·15 claims
- 0547US6098756AGuide rail lubricating device for elevator, and case and oil-retaining member for the lubricating deviceHITACHI BUILDING SYS CO LTD·Filed 1999·Granted Aug 8, 2000·17 cites·25 claims
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