The Patent Office has a material invention examination department, which consists of nearly 10 departments such as heat energy, architecture, environment, petroleum metallurgy, material processing, heating and ventilation, painting, inorganic and chemical industry. You can study the names of these departments.
In addition, you can find some patents in this field to see what knowledge others have applied for. When searching for patents, find an article that you can understand and is closest to your major. Then look at his classification number and use it to search, and you will find many patents with this classification number. If you read it, what you can understand means that you have studied it, and what you can't understand means that you can still find it in the textbook. If you want to go further, if your foreign language is English, learn it well. When English is good, the road is wider.
Regarding employment, you have to think about your career plan. Do you want to engage in technology or management, or do you have other arrangements at home, such as energy and chemical industry and equipment control? You are very concerned about the patent agency industry. Actually, you can take a patent agent course. If possible, it is also good to be an examiner in the Patent Office (National Defense Patent Office) or the Audit Association. ...