Why didn't Madame Curie, a scientist, apply for a patent for radium?

Look at the objective reasons first. Radium is a natural substance, which exists in itself. Madame Curie was the discoverer of radium, not the creator of radium, so objectively speaking, Madame Curie could not apply for a patent for radium.

But even so, Madame Curie can completely monopolize the purification and production process of radium. If she did, she might become a billionaire, and no one else could find anything unreasonable, but she didn't do it. This is a more important subjective reason why Madame Curie didn't apply for radium patent. Madame Curie is a scientist, not a capitalist. She said that she just found something that exists in nature, which can cure diseases and save lives. She can't monopolize for money. This is Madame Curie, a great scientist who is indifferent to fame and wealth and can give children a Nobel Prize. Her scientific research is to better benefit mankind, not to make money for herself. She abided by professional ethics all her life and never thought of using science for her own benefit, even though she was treated unfairly at that time. Why didn't Madame Curie apply for a patent for radium? Because she doesn't want to turn scientific achievements into a tool to make money, and she doesn't want to squeeze other people's money, especially patients. She is a person devoted to research, using her research results to save lives, save lives and benefit mankind. This is perhaps the place where she is most respected by future generations, and it is also a beautiful character worth learning from. As for Madame Curie's name, people all over the world must know that no woman has won two Nobel Prizes in her life like her achievements in the field of science, and there are many stories about Madame Curie that have been handed down, such as the story of being indifferent to fame and fortune, the story of educating women well, the story of simple living and so on.