I Was Short on Time & Ideas...
The invention was born from a tweaked Pressman (Sony's monaural portable cassette recorder) and a pair of headphones.
Organizational changes were taking place at Sony in 1979 and the tape recorder division was pressed to market something soon, or risk consolidation. They came up with a small cassette player capable of stereo playback. So, Sony was first to market with the product, thus the name becomes synonymous with the product, and that is the first rule of brand names becoming generics. But sometimes first to market is not what makes the name a generic. For an example of this, I will use Kleenex.
Contrary to what the Kimberly-Clark Company would have you believe, Kleenex is not the first facial tissue. Scott Paper Company was first to market in 1907, seventeen years before the Kleenex brand (as an interesting side note, Kimberly Clark purchased Scott Paper Company in 1997).
So why don't we say hand me a Sani-Towel (the Scott tissue name)? Marketing, and timing, is everything.
In 1907, the height of the Victorian Age, you simply did not run magazine/newspaper ads extolling the virtues of so personal a thing as personal hygiene. Ah, how social mores change in only seventeen years.
By 1924, it was acceptable to talk about personal hygiene in public. Add to that Kleenex's convenient packaging, the self dispensing box (the Sani-Towel came on a roll and was a bit rougher…think paper towel), and their clever marketing strategy of using movie stars to promote the products through magazine ads and placing their pictures on the boxes. All this conspired to make Kleenex the generic name of facial tissues.
Of course, now you're asking, "how prevalent is brand-name-as-generic?"
I'm glad you asked. Here is a list of brand names used as generics – Play-doh, Plexiglas, Coke, Xerox, FedEx, Super Glue, Magic Marker, Hi-Liter, Post-its, Liquid Paper, Chapstick, Clorox, Bandaid, Scotch Tape,
The question being begged now is, "Surely this isn't just a 20th century phenomenon…" No, I don't think so. The problem in researching this phenomenon in the 18th and 19th centuries is that the once the use of a class or type of product dies out, the name dies with it. I think perhaps that some of the names listed in the last paragraph are in danger of this happening in the 21st century. As examples, I'll use the Xerox and Liquid Paper brand names.
The name Xerox, the company that invented the copying machine (a "first to market" brand name), has come to mean "a copy of something;" as in, "I need this report Xeroxed so I can hand it out at the meeting." The person uttering this line doesn't mean he wants copies made specifically on a Xerox machine; he/she just means that they need to make copies.
But, this nomenclature is in danger of going the way of the word 'icebox' because of the computer age, i.e., email, PDFs, and multiple print-job printers. The same is true for Liquid Paper.
Liquid Paper is the brand name for typewriter correction fluid. Invented in 1951 by secretary Bette Nesmith because she had learned to type on a manual typewriter and had to make the move to electric typewriters.
The difference in pressure required for electrics as opposed to manuals caused her to make many mistakes. Rather than re-typing the whole document, she put white tempura paint in a nail polish bottle and Liquid Paper was born. Again, the computer age is to blame; the use of word processing computer programs (eliminating the need to cover something up) is killing off the Liquid Paper name-as-generic.
The brand-name-as-generic is a double-edged sword.
A company will spend millions of dollars on advertising in order to make their product a household name. But when that name becomes so household that it represents the generic, they must redouble their efforts – and advertising funds – to make the brand stand out so that when the average consumer is at the store they don't think, "We're almost out of Kleenex," and they pick up the no-name store brand.