142:. So he developed a plug of cotton inserted by means of two cardboard tubes; he did not want the woman to have to touch the cotton. He applied for a patent for the "Catamenal device" on November 19, 1931, and was granted U.S. Patent No. 1,926,900 on September 12, 1933.
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After selling the rights to the tampon, he continued with his doctor's practice and various business enterprises. He later regretted selling the rights, but was glad it was successful, and died at 93 in 1981. Up to his death he continued to try to improve the tampon.
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immigrant who made the first Tampax tampons at her home using a sewing machine and Haas's compression machine. Tampons based on Haas' design were first sold in the U.S. in 1936.
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Haas wanted to invent something better than the "rags" his wife and other women had to wear, he said, and got the idea for his
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123:(and made $ 50,000 from selling the patent), sold real estate and was president of a company that manufactured
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by David John Cole, Eve
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newspaper in 1969 named Haas one of the "1000 Makers of the
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to a Denver businesswoman, Gertrude
Tendrich, for $ 32,000. She started the
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with an applicator, marketed as "Tampax". He graduated from the
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company and was its first president. Tendrich was an ambitious
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Kansas City
University of Medicine and Biosciences alumni
149:company), on October 16, 1933, he finally sold the
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248:Encyclopedia of Modern Everyday Inventions
138:who used a sponge in the vagina to absorb
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198:. Procter & Gamble. Archived from
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116:He invented a flexible ring for a
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94:Kansas City College of Osteopathy
50:Kansas City College of Osteopathy
285:20th-century American inventors
265:American osteopathic physicians
196:"History of tampons and tampax"
96:in 1918 and spent 10 years in
40:Doctor of Osteopathic Medicine
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147:Johnson & Johnson
86:osteopathic physician
224:. U.S. Patent Office
102:general practitioner
88:and inventor of the
84:(1888–1981) was an
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222:"Patent US1926900"
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280:1981 deaths
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228:14 December
168:The London
125:antiseptics
26:Nationality
259:Categories
182:References
136:California
112:Inventions
78:Earle Haas
20:Earle Haas
206:3 October
155:trademark
121:diaphragm
108:in 1928.
36:Education
98:Colorado
30:American
163:German
159:Tampax
151:patent
132:tampon
106:Denver
90:tampon
69:tampon
230:2020
208:2012
153:and
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