 IDAHO FALLS, Idaho, Aug. 18, 2021 PRNewswire -- International Isotopes Inc. OTCQB: INIS the Company or INIS announces its financial results for the three months ended June 30, 2021. Revenue for the three months ended June 30, 2021, was 2,759,896 compared to 2,159,559 for the same period in 2020, an overall increase of approximately 28. 