Gainesville, Florida - Life sciences company Quick-Med Technologies Inc. said 4 Jan that it has been awarded a sixth US patent for its novel, non-leaching Nimbus antimicrobial polyurethane-based technology.
The US Patent and Trademark Office has issued Quick-Med with US Patent No. 8,088,400 entitled "Disinfectant with Quaternary Ammonium Polymer and Copolymers."
This patent covers a novel polyurethane-modified polycation, the newest Nimbus antimicrobial. Nimbus technology encompasses antimicrobials that comprise a poly-cation with high charge density, which is built into the backbone of various polymers -- polyurethane in this case.
The new patent is a key "composition-of-matter" one, covering incorporation of a Nimbus poly-cation into main chain of a urethane polymer. The physical state of the polyurethane poly-cation can be modified to alter the strength of the antimicrobial, the breathability of the film or coating and its flexibility or rigidity, says Quick-med.
The patent provides protection for various claims regarding the efficacy and durability of an antimicrobial polyurethane.
"This patent adds an exciting new dimension to our Nimbus technology," said Dr William Toreki, co-inventor and Quick-Med's chief chemist, in a company statement.
"Our new polyurethane poly-cation is well suited for a wide range of applications including films and coatings, adhesives, catheters and other types of extruded tubing, and as a durable hand sanitiser."