It's not only brand.
So.
Curt Hoppe - maker,
Carl Hoppe der Jungere - maker,
Eugen Hoppe - maker,
Julius Hoppe - maker,
Samuel Hoppe - maker,
Wilhelm Hoppe - maker, stamp "Guillermo Hoppe",
(Samuel and Wilhelm are from one family). Hoppe & Cо, the owners were Ernst и Richard Hoppe, later and Auguste Hoppe.
Well-known company Giesen&Forsthoff "Timor", has trademark "German Hoppe".
These makers, that I know only. Probably, there are some more.
As you see, not so simply with all these Hoppes.