Hitachi has a total of 185,741 granted patents and 708,057 patent applications distributed into 611,393 patent families. Based on the countries of patent applications, the key markets for Hitachi are Japan, USA and South Korea. The main technology areas are semiconductor devices; electric solid state devices, electric digital data processing and information storage based on relative movement between record carrier and transducer.
By showing the geographic breakdown of the company‘s patent portfolio, it is possible to determine the territorial markets that the company is focusing on.
Japan is the top country/region for patent coverage with a total of 585,994 patents.
USA comes in 2nd with a total of 78,055 patents.
South Korea rounds up the top 3 with a total of 20,691 patents.
Through grouping the company's patents into their various technology areas, it is possible to identify the core competence of the company.
The ranking below shows some of the most valuable and core patents in this company's portfolio.
|4||CN1322242C||Friction welding method and structure body formed by friction welding method|
|5||CN1321166C||Abradant, grinding method for substrate, and mfg. method for semiconductor device|