ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,448,971, issued on Oct. 21, was assigned to ASPEN COMPRESSOR LLC (Marlborough, Mass.).

"Compact low noise rotary compressor" was invented by Kang P. Lee (Sudbury, Mass.) and Douglas S. Olsen (Natick, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a low noise, compact rotary compressor configured to damp noise and vibration generated from internal components. The compressor may include a stator holder coupled to the stator and the pump, providing physical separation between the stator and the casing. The compressor may also include a pump holder coupled to the pump and the casing, providing physical separation betw...