Whow, another well-known piece of software that was written by Fabrice Bellard. He's also the original author of qemu, tinyemu, tcc, ffmpeg and many more.
One of the most influential programmers of our time, if not the most.
His track record is exceptional, he must be a Godlike programmer!
Incidentally, PC BIOSes used the LZ* family of compression algorithms too. LZSS (also known as LZ12/4 for its allocation of indicator word bits), LZARI, LZHUF (which lead to the famous LHA/LZH, and then Deflate/Zlib, ZIP, etc.), and LZINT were all commonly encountered. Apparently Phoenix had a patent on it:
https://patents.google.com/patent/US5836013A/en (search for LZSS)
Despite the relative obscurity of Okumura's code, it has definitely had a huge impact.