The computer part of an M1 Macbook is mostly battery so I wouldn’t have thought this was a huge engineering challenge, but then you have to ask why?
A Mac Mini is $1,099 a MacBook Air $1,499, where would this even sit in the product range and what would you want to use it for? How would you power it? In what use case is this better than a Mac Mini or a MacBook Air?
If it was $500-$700 and kept the M1 (as we transition to M2) as a companion device for your iPad (which it could use as a screen with some sort of side car implementation I suppose)… maybe?
Really though, just release MacOS as an iOS App, even if it’s limited only to the iPad Pro’s (which would be an excellent differentiator if you ask me), and let people run full on MacOS on their remarkably similar M1 iPads. Then sell a dock (something like the whole Samsung Dex thing) or better yet a 27"/32" Apple Thunderbolt Display they so clearly need to ‘re-imagine’ and ‘innovate’.
I’d say I was totally cutting the lunch of the MacBook Air, but a 256GB 12.9" iPad Pro is more expensive before you buy the needed keyboard case to get the laptop-like experience… It would also be a gateway product to get more people onto MacOS as well as a taste for more powerful and dedicated machines.
… but this?? It’s only a patent and I suppose it’s a (somewhat) logical extension of where they are today and may or may not ever result in a product.