US Patent Issued to LEXMARK INTERNATIONAL on May 27 for "Thin-walled tube heater for fluid" (American, Japanese Inventors)

ALEXANDRIA, Va., June 17 -- United States Patent no. 12,313,297, issued on May 27, was assigned to LEXMARK INTERNATIONAL INC. (Lexington, Ky.).

"Thin-walled tube heater for fluid" was invented by Jerry Wayne Smith (Irvine, Ky.) and Makoto Aoki (Ishikawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A tube heater for heating a fluid in an interior of the tube has a stainless steel cylindrical core. The core ranges about 3 to 300 mm in length and about 100 to 200 microns in thickness with an outer diameter of about 8 to 20 mm. An inner surface of the core has dimples and a conductive coating. A patterned resistive layer overlies the core in a thickness of about 9 to 15 microns. The resistive layer is t...