Marion Donovan (1917-1998) was an American inventor. In 1946 she designed the “Boater,” the first reusable waterproof diaper cover, and later laid the groundwork for the modern disposable diaper, filing some twenty patents over the course of her life.
Marion Donovan(1917 — 1998)
Marion Donovan
États-Unis
6 min read
Frequently asked questions
Key Facts
- Born in 1917 in Fort Wayne, Indiana, in the United States
- Invented the “Boater” in 1946, a reusable waterproof diaper made from shower curtains
- Obtained a patent for her invention in 1951, which she later sold
- Laid the groundwork for the modern disposable diaper by designing a diaper made of absorbent paper
- Died in 1998; she was inducted into the National Inventors Hall of Fame in 2015
Works & Achievements
The first reusable waterproof diaper cover, originally made from a shower curtain. It solved the leakage problem that had exasperated millions of parents.
Patent protecting her waterproof cover with snap fasteners. It officially recognized her invention and allowed her to sell her company.
A diaper made of absorbent paper designed to be thrown away after use. Rejected by the manufacturers of the time, it nonetheless foreshadowed today's disposable diapers.
A remarkable personal achievement: at age 40, Donovan took her place at Yale in a field then almost closed to women.
A hanger system that lets you hang many garments in a small space, an example of her inventiveness applied to everyday objects.
A looped dental floss product, one of her last patents, reflecting a creativity that stayed active until the end of her life.
Anecdotes
In 1946, a young mother exasperated by cloth diapers that leaked endlessly, Marion Donovan cut up a plastic shower curtain to sew a waterproof cover over the diaper. She named her invention the “Boater” and later perfected it with nylon parachute fabric, strong and light.
Rather than the safety pins that pricked babies and rusted, Donovan had the idea of adding snap fasteners to close her diaper. This small detail made the object far safer and made a lasting impression when it launched at Saks Fifth Avenue in 1949.
Buoyed by the success of the Boater, Donovan then imagined a fully disposable diaper made of absorbent paper. But the big manufacturers rejected it, convinced the product would never sell. Ten years later, Procter & Gamble launched Pampers on this very principle: her intuition was right, just too far ahead of its time.
In 1951, Marion Donovan sold her company and the rights to the Boater for one million dollars, a considerable sum for the era. Over the course of her life she filed some twenty patents in all, on objects as varied as dental floss and a closet organizer.
Determined never to stop learning, Donovan earned an architecture degree from Yale University in 1958, at a time when women were extremely rare in such studies. She had in fact grown up surrounded by inventors: her father and uncle had designed an industrial machine tool.
Primary Sources
The patent describes a waterproof diaper cover made of a soft, watertight material, fitted with snap fasteners that replace pins, designed to stay dry on the outside while holding moisture in.
“I went to every big name you can think of, and they told me: we don't want it, no woman wants to give up the job of washing diapers. What an absurd notion.”
The article recalls that in the 1940s Marion Donovan invented a waterproof diaper that did not leak, then designed a disposable diaper long before the industry saw its value.
Key Places
Marion Donovan's hometown, where she grew up surrounded by inventors: her father and uncle designed machine tools in their workshop.
Residential suburb where Donovan, a young mother, invented the Boater in the late 1940s, sewing her prototypes at home.
Luxury department store where the Boater first went on sale in 1949, meeting with immediate success among families.
University where Donovan earned a degree in architecture in 1958, being among the very few women admitted to the program at the time.
City where Marion Donovan passed away in 1998, at the age of 81, after a life of invention and entrepreneurship.
Typical Objects

A waterproof, reusable diaper cover invented by Donovan in 1946, worn over the cloth diaper. Lightweight and leak-proof, it prevented leaks while letting the skin breathe.

A waterproof material that Donovan cut up to make her very first diaper-cover prototype. An ordinary household object repurposed into a tool of invention.

Small metal fasteners that Donovan added to her diaper to replace safety pins. Safer, they avoided pricking the baby and did not rust.

A traditional fastener used to hold cloth diapers in place before Donovan's invention. Practical but dangerous, it could prick the baby or whoever was changing the diaper.

A strong, waterproof synthetic fiber widely available after the war, which Donovan used to replace the shower curtain in her improved diapers.

A household tool with which Donovan sewed her own diaper prototypes at her kitchen table. It allowed her to test and refine her ideas without a workshop.

A prototype designed by Donovan in the early 1950s, made from a special absorbent paper meant to be thrown away after use. Rejected by industry, the idea nonetheless foreshadowed modern diapers.
School Curriculum
Vocabulary & Tags
Key Vocabulary
Tags
Daily Life
Morning
A homemaker in an affluent Connecticut suburb, Marion starts her day caring for her young children: waking them, changing diapers, fixing breakfast. It is while repeating these tasks, and endlessly washing leaky diapers, that the idea for her invention comes to her.
Afternoon
In the afternoon, while the children nap, she settles at her sewing machine to cut up shower curtains and parachute fabric and test new prototypes. Later, having become a business owner, she devotes her afternoons to meeting with manufacturers and buyers.
Evening
Evening brings the family together around dinner, in the cozy atmosphere of the postwar American home. Marion then takes the chance to sketch out ideas, jot down improvements, or read, her mind always occupied by an invention to come.
Food
The food reflects the America of the 1940s and 1950s: meat, canned vegetables, processed products, and the first industrial foods touted by advertising. The refrigerator and ready-made meals were transforming home cooking at the time.
Clothing
A former contributor to Vogue and Harper's Bazaar magazines, Marion takes care with her appearance: fitted dresses, elegant suits, and neat hairstyles, in the chic and structured postwar style.
Housing
She lives in a single-family home in a residential suburb, surrounded by a garden, typical of the American dream of suburban living that grew with the baby boom. Modern comfort — household appliances, a fully equipped bathroom — is everywhere.
Historical Timeline
Period Vocabulary
Liens externes & ressources
Références
Œuvres
La « Boater », couche-culotte imperméable
1946
Brevet américain n° 2 556 800
1951
Prototype de couche entièrement jetable
début des années 1950
Diplôme d'architecture, université Yale
1958
« The Big Hangup », organiseur de placard
années 1960-1970
« DentaLoop », fil dentaire
années 1990






