How to use company name to find patent documents? Please tell me.

In order to understand and master the new technology and new products adopted by a company, people often hold the name of a company, but they can't find its patent literature. The reason is that they don't know how to find patent documents from the company name. To search patent literature by company name, the most basic condition is to master the company name accurately, otherwise the required information cannot be found, because the company name indexes of American patents, Japanese patents and World Patent Index (WPI) are generally arranged alphabetically, such as American patents and WPI are arranged by 26 letters in English; However, the names of Japanese companies are arranged according to the katakana of Isuzu, Japan, so it is necessary to master the pronunciation of the names accurately. Here's how to find patent documents from the company name by finding Japanese patents. For example, a factory wants to know the patent literature of mitsubishi electric company about electron beam welding technology, and the search steps are as follows: Step 1: Mitsubishi company is pronounced as company. Step 2: Use