Actually, at least one patent was already awarded to them in this area. After seeing your post, I did some research, reading some articles in the popular domain and downloading a couple of academic ones. Keeping in mind that many times, companies in the business of intellectual property will patent a technology not nearly so much because they want to actually produce it as because they want to make sure that no one else makes it. (or if they do, they have to pay to license the rights to do so.)

Once you dig a little bit, you learn a couple of things. The first is that these sensors are not made as curved sensors. They are made as flat sensors, then "deformed," forcing them to assume the curved shape. The second is that they are produced on silicon (or whatever semiconductor material) substrate that is significantly thinner than normal sensors in order to make them easier to curve. Unfortunately, silicon is like glass, so that means that it becomes more fragile as it gets thinner. In fact, while work has been done on "full frame" size sensors, the most recent articles indicate that current work is being focused on significantly smaller sensors for applications like drone cameras.

There was an old joke about the difference between being "involved" and being "committed." The parallel had to do with breakfast and how the chicken was involved in breakfast (the eggs), while the hog is committed to breakfast (the ham). The reason this matters here is that there is no reasonable way to adapt planar image lenses to curved sensor cameras nor curved image lenses to flat sensor cameras.

There seems to be a consensus that this is not a near-term development for general photography, but that the focus will be to equip miniature drones and other surveillance equipment. I wouldn't be surprised if it were militarized, classified, and kept from the commercial marketplace altogether.