1980, Akzo (Aksu) Company of the Netherlands took the lead in obtaining the technology and product patent of this fiber. 1989, the International Bureau of Artificial Fibers named it "Lyocell".
Literal meaning: soluble fiber, transliteration: Lycel, industry: Tencel, so the industry knows what you are talking about.
Tencel is because the early British Courtaulds company bought the patent authorization of Dutch Akzo company and registered the trademark Tencel, which has a large output and a high market share in China. Lenzing in Austria is now the largest company. It acquired Tencel, and its trademark Tencel has been used to this day.
PS: Blue Whale Company develops modal fiber.
Lycra is also a registered trademark of DuPont in the United States. Lycra fiber fabric is called Lycra, which is similar and established.