G.M. had declined to make the documents public, contending that competitors could learn proprietary secrets.

The results of these explorations were held as proprietary secrets for many decades by the Hudson's Bay Company.

Their formulas are considered proprietary secrets, so the manufacturer may simply use the generic term "fragrance."

Unlike industries like pharmaceuticals or computers, the retail business has few proprietary secrets.

Company lawyers seal up corporate records on continuing litigation or current proprietary secrets.

This is getting into proprietary secrets again, but you need to understand at least part of it.

Some materials were attorney-client work product or proprietary secrets and, as such, privileged from disclosure.

Vanilla extract was previously imported from France and made by processes which were proprietary secrets.

BP said the results were a proprietary secret.

"The real issue is do you want United States intelligence to steal the proprietary secrets of foreign nations," a Government official said.