Ten Years Later, A Third Google "Founder" Comes Out Of The Woodwork
techcrunch.com
techcrunch.com
It sounds strange but maybe what he means is that they may have asked him to commit in order to put his name on the paper?
So, assuming he rejected their offer, he has no right to claim anything.
"BREAKING NEWS!!! Ten Years Later, A "Third" Google Founder Comes Out Of The Woodwork. Don't miss the touching story of the hero who helped fund Google then never got proper recognition!
(later...)
BREAKING NEWS!!! "Third" Google "Founder" EXPOSED as a HOAX! Read all about the impostor who spurred lots of SHOCKING controversy earlier this week!"
In any case, it seems he just wasn't willing to take the risk and so can hardly be called "founder" ...
What were Hubert Chang's other papers? What was his PhD thesis about?
Hung-Hsien, Chang Enriched Content: Concept, Architecture, Implementation, and Applications
I went to the NYU CS Grad at the same time with him. I never heard this story from him.
If this individual elected to pursue his PhD work instead of carrying on with google, then he hasn't a right to complain that he is not getting the "recognition" he feels he deserved.