I cannot give you the prescription because it is a trade secret.
Where Alec was concerned, the bomb ought to remain a trade secret, so to speak.
Its composition is a trade secret, but its chief ingredient is rubber.
But we do not keep it ourselves, nor do we know the parties who prepare it, it being something of a trade secret.
To this the witness responded that the matter in question was a trade secret and must be respected as such.
He merely kept his trade secret, because he had to keep his tricks secret, like any other conjurer.
The composition of this sauce is a trade secret, but a variety of similar sauces are found on the market.
This was a wonderful discovery, and was preserved as a trade secret for a long time.
But whether I practice Yoga, Dianetics, or write the lines on a sugarcoated pill and swallow it is my trade secret.
Port-Salut made by Trappist monks at Savoy from their method that is more or less a trade secret.