Yes, that is the case for most of the above patents. Thanks, PE.

US 6,518,009 (Mydlarz et al., High intensity exposure photographic imaging method emplying iridium doped high chloride emulsion, Kodak) describes the use of an iridium doped AgBr Lippmann emulsion - to prevent HIRF, I assume.

... wherein the high chloride silver halide emulsion layer is comprised of silver halide emulsion grains containing at least 90 mole percent chloride, based on silver, obtained by providing a high chloride host emulsion, bringing a Lippmann emulsion comprising primarily fine silver bromide grains doped with iridium into contact with said high chloride host emulsion, and subsequently chemically sensitizing the high chloride emulsion.