Patent Class 426 allows for the patenting of foods and recipes. The language of this rule covers foods and edible materials.How can I obtain a PFR application? There are three ways to obtain a Processed Food Registration application: Fill out the online application This page provides information on the types of patents and types of patent applications, and the examination process. Warren, Los Angeles, Calif. A Cottage Food Operation can prepare and package certain nonpotentially hazardous foods in a private homekitchen. No, it is generally not possible for someone to patent the process of making bread. The main reasons are: 1. This new law allows certain foods, known as Cottage Foods, to be made in private homes and sold to the public.