ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,288, issued on March 18, was assigned to GUANGZHOU ARGION ELECTRIC APPLIANCE Co. LTD. (Guangzhou, China).
"Smart heat sealing method for vacuum packaging" was invented by Zhicun Yin (Guangdong, China), Guoqiang Liang (Guangdong, China) and Xiao Tang (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure provides a smart heat sealing method for vacuum packaging, comprising steps of: recording a time interval trianglet between two adjacent starts of a heating device which is continuously started a number of times; recording a number k of starts of the heating device; obtaining a first heating coefficient p1 based on trianglet...