Automakers instead use proprietary formulas to arrive at a nationwide average for a particular product type.

However, they consider their product a proprietary formula.

Football Outsiders has devised a series of proprietary formulas to calculate different metrics.

The mineral plate is a proprietary formula of 33 trace elements which are also found in the human body, in various chemical binding forms.

This is done through the generation of specific, proprietary formulas that analyze statistics in an unconventional, scientific manner.

Ad networks, which account for much of Internet advertising sales, use proprietary formulas to figure out which ads to show to whom.

In the last year, a handful of hospitals have even developed their own proprietary formulas.

The cost of funds varies among banks, according to proprietary formulas at each bank.

In electroplating, boric acid is used as part of some proprietary formulas.

The vitamin formula is a proprietary formula and is the "secret sauce" that goes into the food.