Here are some of the patents Nikon filed in the last few months:
→ patent for a camera that can be attached to a smart phone
→ patent for a one-piece external flash hot shoe and viewfinder accessory
→ patent for a 28mm f/2.8 lens for unknown sensor size (it’s either for Nikon 1 or APS-C)
→ patent for a 9-135mm f/3.5-5.6 lens with VR for Nikon 1 mirrorless cameras (24-365mm equivalent)
→ patent for implementing global shutter without any light-blocking.
Few other Nikon patents are described here, but I did not see anything worth reporting.