"Jen-Hsun Huang certifies that he is the president and secretary of NVidia Corporation, a California corporation." - ARTICLES OF INCORPORATION OF NVidia Corporation, 1993, filed with the California Secretary of State and available online.
"The name of this corporation is NVIDIA Corporation." - 1995 amendment.
https://forums.tomshardware.com/threads/nvidias-name-change....
When I got to know their products, they were nVidia.