Canon filed a patent for a 70-200mm f/4 lens.
Canon filed patents for a 18-200mm f/3.5-5.6 IS and 28-200mm (APS-C) f/3.5-5.6 IS (full frame) lenses.
Canon patented a liquid lens - instead of an electrical motor, the optical elements are moved by liquid. Sony and Samsung have similar patents.
Olympus filed a patent for a 3D camera and lens.
Toshiba filed a patent for a curved sensor. Pretty much every other company have already filed similar patents.
