ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,515, issued on March 17.
"Photobioreactor" was invented by Alexander Levin (Binyamina, Israel) and Hanan-Emanuel Levin (Binyamina, Israel).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention discloses a photobioreactor featuring a microalgae cultivation chamber in the form of a closed flat duct irradiated by sunlight. The flat duct is constructed from an inflatable sleeve made of transparent polymer film. This inflatable sleeve is sandwiched between a bank of frames with wire nettings, plates of foamed plastic, a variable air pressure mattress located underneath the inflatable sleeve, and a thermo-insulating transparent inflatable mattress ...