Forum regular rrcphoto has done some dirty work and found a bunch of Canon USA patents you may be interested in. Since the demise of Egami, these have been harder to come by.
Stacked sensor patents
Stacked sensor patents for mobile phone use:
Microlens patent, likely for mirrorless cameras.
An SLT patent?
Continuous liveview in EVF
Linear USM patent.
If you speak patentese and can better explain what these are, please sound off in the forum.