31. Disposable diaper
> Inventor: Marion Donovan
> Year / period: 1950
First inventing a leak-proof diaper covering, then a fully disposable diaper, Donovan was intent on helping as many people as possible with her ingenuity. While it’s not surprising that her inventions were completely ignored as “unnecessary and impractical” by the male manufacturers she pitched them to, Donovan took matters into her own hands and sold them straight to Saks Fifth Avenue.
32. Anti-fungal drug
> Inventor: Rachel Fuller Brown and Elizabeth Lee Hazen
> Year / period: 1950
These two New York Department of Health lab researchers discovered Nystatin, one of the first effective anti-fungal medicines, by collaborating on experiments through the mail.
33. Liquid Paper
> Inventor: Bette Nesmith Graham
> Year / period: 1951
This invention turned Graham from a secretary to a millionaire. First marketed as “Mistake-Out,” Graham’s home-made typewriter correction fluid was an instant hit among her fellow secretaries. After further experimentation, she perfected her recipe and Liquid Paper was born.
34. Computer software
> Inventor: Grace Murray Hopper
> Year / period: 1952
A computer scientist who helped design Harvard’s Mark I Computer, Hopper also invented a compiler that could translate written language into computer code, and was a part of the team that developed COBOL, one of the first modern computer programming languages.
35.Waterproof leather protector
> Inventor: Patsy O’Connell Sherman
> Year / period: 1956
While attempting to develop a new kind of rubber for jet fuel lines, Sherman and her lab partner Sam Smith accidentally discovered a waterproof, stain proof, insoluble polymer that eventually became Scotchgard.
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