Haas got the idea for the tampon from a female friend, then sold it to a woman. "After failing to get people interested in his invention (including the Johnson & Johnson company), on October 16, 1933 he finally sold the patent and trademark to a Denver businesswoman, Gertrude Tendrich, for $32,000. She started the Tampax company and was its first president. Tendrich was an ambitious German immigrant who made the first Tampax tampons at her home using a sewing machine and Dr. Haas's compression machine. Tampons based on Dr. Haas' design were first sold in the U.S. in 1936."
Of course he gets all the credit for something women had literally been doing for centuries.