How many patents does
Qingdao Hisense Hitachi Air Conditioning System Company have?
patents
433
families
323
granted
87
applications
346
CN
401
EP
14
WO
10
US
7
RoW
1
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The report contains ten-year analysis with the following sections
- patent filing analysis
- worldwide filing analysis
- patent family analysis
- application analysis
- granted analysis
- classification analysis
- citation analysis
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Qingdao Hisense Hitachi Air Conditioning System Company
Top ten assignees appearing on patents
Qingdao Hisense Hitachi Air Conditioning System Company
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| heat recovery variable-frequency multi-split heat pump system and control method thereof | 8 | 2014 |
| drive control device and method of electronic expansion valve | 8 | 2012 |
| multi-coupled heat pump air-conditioning system and method of controlling multi-coupled … 🛈 | 6 | 2012 |
| radiant floor heating multi-split air conditioning system | 6 | 2013 |
| method and device for optimizing operational control of compressors in multi-couple unit… 🛈 | 6 | 2012 |
| heat dissipation circulating system of air conditioner | 4 | 2013 |
| method for controlling lead angle of permanent magnet synchronous fan | 2 | 2011 |
| heat pump heating system and control device and method of auxiliary heating | 2 | 2012 |
| control method of refrigerant distributor of air-conditioner unit | 2 | 2012 |
| air-conditioning linkage system and method based on solar water heater | 2 | 2012 |