(a) There is a presumption of public accessibility to all public records, subject only to the following categories of information which are specifically exempt from disclosure under this article:
(1) Trade secrets, as used in this section, which may include, but are not limited to, any formula, plan, pattern, process, tool, mechanism, compound, procedure, production data, or compilation of information which is not patented which is known only to certain individuals within a commercial concern who are using it to fabricate, produce, or compound an article or trade or a service or to locate minerals or other substances, having commercial value, and which gives its users an opportunity to obtain business advantage over competitors;