21+ Mason Jar Containers. I've been developing mason jar products for four years now. A mason jar — named after john landis mason, who patented it in 1858 — is a molded glass jar used in home canning to preserve food.
The design of mason jars hasn't changed much (if at all) since the 19th century, but their continued popularity has led makers and users alike to adapt these handy containers for a myriad of different.
A mason jar is a molded glass jar used in canning to preserve food. See more of mason jar on facebook. A mason jar — named after john landis mason, who patented it in 1858 — is a molded glass jar used in home canning to preserve food. Once used exclusively as a way to pickle items of food and as jam containers.