(source: https://www.rsc.org/periodic-table/element/24/chromium)

Chromium plating was very popular for protecting car body accessories like bumpers (Improvements Relating To Bumper Arrangements On Motorvehicle Bodies (1967)), radiators (Improvements In Or Relating To Electro Deposition Of Chromium (1930)) and door handles.

Natural rubies get their red colour from chromium and synthetic star rubies and star sapphires can be made with chromium (Synthetic Star Rubies And Star Sapphires, And Process For Producing Same (1949)).

It is generally accepted that Harry Brearley invented stainless steel of which the important component is chromium (Steel Production (1915)).

Chromium-containing glasses are used to seal electronic components:


All patent information has been obtained from Espacenet (European Patent Office).