Sony patented a 20mm f/2.8 and 28mm f/2.8 pancake lenses for APS-C mirrorless cameras.
Ricoh filed a patent for 7mm f/2.6 lens (4/3" sized sensor).
Panasonic filed a patent for several different Micro Four Thirds lenses: 12mm f/2.0, 12mm f/1.4 OIS, 12mm f/1.2 OIS, and 12mm f/2.8.
Canon has a new patent for 55-250mm f/4-5.6 and 55-300mm f/4-5.6 IS STM lenses.
Fujifilm filed a patent for a hybrid AF with pixel dimming element.
Olympus patented a two-layer RGB-IR sensor.
A new Canon patent describes a faster and more accurate phase detection AF method during continuous shooting.
Olympus filed a patent for previewing HDR images in live view.