In what year did gel explosives get patents from Britain, America, Germany and other countries?

The invention of rubber explosives is indeed another revolution in the history of explosive invention. Once published, 1878 immediately obtained the patent rights in Britain, the United States, Germany and other countries. This kind of explosive is not afraid of smashing, falling and burning in case of fire, so it is safe to transport and operate. At the same time, its explosive power is stronger than that of internal explosives, which can not only be easily used in any major projects, but also greatly improve work efficiency, so it has been welcomed all over the world, and this success has also pushed Nobel's career to the peak.