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The hot comb was an invention developed in France as a way for women with coarse curly hair to achieve a fine straight look traditionally modeled by historical Egyptian women. [44] However, it was Annie Malone who first patented this tool, while her protégé and former worker, Madam C. J. Walker, widened the teeth. [45]
Women inventors have been historically rare in some geographic regions. For example, in the UK, only 33 of 4090 patents (less than 1%) issued between 1617 and 1816 named a female inventor. [1] In the US, in 1954, only 1.5% of patents named a woman, compared with 10.9% in 2002. [1]
GB Patent 604 (1715), Cleaning and Curing Indian Corn, applied for by Sybilla Masters but granted to her husband Thomas Masters because women could not be legally recognised. Sybilla Righton Masters (c. 1676 – 23 August 1720) [ 1 ] was an American inventor.
At the time of her registering her patents, only 2% of all those patents were registered by women, making her truly impressive in her particular field and era. She is still considered one of the most successful female inventors of all time. After death, Henry was inducted into the National Inventors Hall of Fame in 2006. [citation needed]
Marion O'Brien Donovan (October 15, 1917 – November 4, 1998) was an American inventor and entrepreneur. Recognized as one of the era's most prominent female inventors, [1] she secured a total of 20 patents for her creations. In 1946, she created a reusable, impermeable diaper cover.
Margaret E. Knight was born in York, Maine on February 14, 1838, to Hannah Teal and James Knight. [4] As a little girl, “Mattie,” as her parents and friends nicknamed her, preferred to play with woodworking tools instead of dolls, stating that “the only things [she] wanted were a jack knife, a gimlet, and pieces of wood.” [5] She was known as a child for her kites and sleds.
The 100 known most prolific inventors based on worldwide utility patents are shown in the following table. While in many cases this is the number of utility patents granted by the United States Patent and Trademark Office, it may include utility patents granted by other countries, as noted by the source references for an inventor.
Jerome H. Lemelson (1923–1997), U.S. – inventions in the fields in which he patented make possible, wholly or in part, innovations like automated warehouses, industrial robots, cordless telephones, fax machines, videocassette recorders, camcorders, and the magnetic tape drive used in Sony's Walkman tape players.
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