Celanese Corporation says the UScalcium citrate & vitamin d3 tablets International Trade Commission (USITC) has voted to institute an investigation into the unlawful importation into the US of certain high-potency sweeteners, specifically Acesulfame Pomagnesium citrate and zinc supplementtassium (Ace-K), in response to the company’s recently filed complaint with the Commission.###The investigation centers on allegedcalcium citrate chelate violations in the importation into the US of high-potency sweeteners that are alleged to infringe a patent owned by Celanese.###The company contendsferrous fumarate usp a number of Ace-K manufacturers have unlawfully introduced sweeteners made via Celanese’s patented technology from China into the US market.###In the investigation, the Commission will consider a general exclusion order barring the importation of all infringing sweeteners.###Celanese continuously invests in manufacturing and quality improvements and is dedicawellness calcium citrateted to robust research, development and customer support for the sweetener products manufactured by its patented process. ###The company intends to protect these investments to supply customers with quality engineered products, and intends to vigorously defend its patented technology against unlawful importation and uses in the US.