![<2018-All> Firm Ranking of the number of Japanese granted patents in the Heat exchange field in 2018](https://japanese-patent.com/wp-content/uploads/2019/06/Heat-exchange-300x169.jpg)
<2018-All> Firm Ranking of the number of Japanese granted patents in the Heat exchange field in 2018
Technical field: Heat exchange (air-conditioning apparatus, heat pump system, heat sink, liquid cooling system, gas turbine engine, heat engine system for...