Complex sentence: As a result, that term cannot be trademarked and can be used by any company making a similar product; thus, on boxes, the words "of corn" are added below the Frosted Flakes logo.
Split into simpler sentences: As a result, that term cannot be trademarked and can be used by any company for a similar product. On packaging, the words "of corn" are added below the Frosted Flakes logo.