Peugeot, the car company, invented the pepper grinder and still makes them.

They started making pepper grinders before they made cars though, so perhaps you could argue they're a kitchen tools company that also makes cars.

Complete with patent-dickery:

"During the Second World War, [the] university patented the homogenisation of cheese milk and attempted to have charges levied on Danish cheese produced using homogenised milk. Their attempts failed, as it could be proved that this method had been introduced 20 years earlier in Denmark by Marius Boe."