Interested in filing a patent? Our team of experienced attorneys and patent agent are here to help.Patent Class 426 allows for the patenting of foods and recipes. The language of this rule covers foods and edible materials. This page provides information on the types of patents and types of patent applications, and the examination process. No, it is generally not possible for someone to patent the process of making bread. The main reasons are: 1. Before you start a home-based food business in California, learn about cottage food laws, permit requirements, and other legal issues. Yes, you can patent a food preservation method. A food preservation method is a process for preserving food and patentable as a utility patent.