1) The document reports on several patents related to food preservation, packaging, and safety. 2) One patent describes a water absorbing sheet containing ceramic powders that radiate infrared rays to preserve foods. Another discusses a paper packaging material coated with an adsorbent that removes ethylene gas and an agent emitting infrared radiation. 3) Additional patents cover methods for deep frying food continuously while filtering out particles from the oil, sterilizing containers with hydrogen peroxide then removing it with ferrous ion, and packaging perishable foods with a carbon dioxide absorbent material.