sentences:  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.