Can a national utility model patent be called the original inventor?

You can't. Obtaining a national utility model patent cannot be called the original inventor. The utility model patent and the invention patent are two different types of patents, which cannot be equated. Their definitions and contents are essentially different, and their scientific and technological contents are also different. Original invention refers to a brand-new technical scheme, which has no precedent in the history of technology. Most of the original inventions are new technologies produced by creative labor directly using natural laws, which belong to basic technologies.