Are you thinking of Kodak ?
Glass manufacturers are leaving us at an alarming rate. Glass is a classical industrial product and companies who have been around for over a century are now going out of business.
It’s quite sad. I hope we can rebuild someday.
I’m reminded of Waterbury CT. Once the center of _global_ manufacturing now it’s a dangerous, dangerous ghetto.
I was thinking of them and Bausch & Lomb plus maybe a couple more.
At one time B&L made some of the best optics in the world. A WWII B&L binocular made after around 1943 when they began coating the lenses are on a par with all but the very best even today. They are better than most, and way better than many.