[Udik]

It's strange that you say there is no bias in the results, because in another comment you have even proposed a mechanism to explain it:

"A black inventor would be seen as out of the ordinary, and so be referred to as an African American inventor, stacking the deck in favour of those results."

So the results look biased. Now, it might just be by chance; however all this talk from Google about fairness and equal representation makes me a bit suspicious. Not certain, just suspicious. I would have preferred a company that just said "look, we're engineers, this is the data, these are the algorithms, we don't care about the outputs, deal with it". But it looks like that stopped happening at Google (I'm not saying in this specific case, I'm saying in general) a long time ago.

[jf-]

My comment doesn’t imply that google are biasing their results.

[Udik]

It doesn't imply the bias is intentional, but it implies there is some bias that needs explaining.