This is the 8644th most frequent Russian word.
открывший
"One who opened" or "having opened."
Here, 'открывший' describes a person who performed the action of opening something.
Человек, открывший дверь, вошёл в комнату.
The person who opened the door entered the room.
'Открывший' is used to denote the company as the one that discovered or paved the way for something.
Эта компания стала уже легендой, как открывший путь к современным технологиям.
This company has already become a legend as it pioneered the path to modern technologies.
In this sentence, 'открывший' is utilized to signify someone who has uncovered or realized something new and significant.