Melitta Bentz registered a utility model for her coffee filter.
On June 20, 1908, Melitta Bentz personally registered a utility model for her paper coffee filter at the Imperial Patent Office in Berlin. Her invention featured a unique filtration system created using blotting paper, improving the clarity and taste of brewed coffee. This registration marked not only a personal entrepreneurial achievement but also a pioneering moment for women in innovation during a time when their contributions were often marginalized or underappreciated.