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It seems that the research was just just supported by Tesla Canada.

Tesla don't even own the IP for their lithium cell technology, that's all Panasonic. Tesla develops battery packs and other things.

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It’s been rumoured recently that Tesla has been developing their own cell manufacturing capability:

https://electrek.co/2019/09/04/tesla-battery-cell-manufactur...

Is this still true since the Maxwell acquisition? My understanding was that this lead to some new IP for the batteries and processes?

As far as I know Tesla is not making cells with the Maxwell technology. Maybe in the future. Panasonic cells are very cost efficient compared to competition. I don't think Maxwell acquisition changes that. My reading is that Tesla is hedging it's bets for the future. Maxwell has some dry cell technology for example.

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