By who? The cotton gin and spinning jenny are front and center in any history of the early industrial revolution.
Spinning Jenny? Yeah, that's complex enough that it couldn't have appeared much sooner. I'm not sure if the cotton gin would have been possible sooner or not.
It's not hidden, but I don't think it's commonly known.
But yeah, that entire IG Farben episode might have toned down their enthusiasm for identifying with dyes a little. Same for their peers up and down the Rhine.