In 2006 and 2010 Universidad Nacional de Colombia published articles that claimed new discoveries within this same family of rare earth copper-oxides based on “planar weight disparity” without attribution of any sort. Below are direct quotes from both the UNAL article and original SCO article.
Universidad Nacional de Colombia 2010: “An exact 5050 mix of Yttrium and a heavy rare earth has been found to significantly improve Tc in the Lu0.5Y0.5Ba2Cu3O7-d by creating substantial planar weight disparity in alternating layers, which has previously been found to increase Tc.in copperoxide.”
Original SCO article from 2005: “An exact 50-50 mix of Yttrium and a heavy rare earth has been found by Superconductors.ORG to significantly improve Tc. This creates substantial planar weight disparity in alternating layers, which has previously been found to increase Tc in copper-oxide superconductors.”
In June 2008 Superconductors.ORG (SCO) filed a patent claim and posted a news story on “Ultra YBCO”, a Y358 variant of YBCO that produced a higher resistive Tc without additional elements. Some months later Sharif University of Iran contacted SCO by email and began asking questions regarding the synthesis of this material. Then, in September 2009, Physica C published an article by these same researchers purporting a “New Y-Based HTSC with Tc Above 100K”. Nowhere in the article was Superconductors.ORG referenced or acknowledged.
In March 2010 Srinakharinwirot University of Bankok, Thailand, published an article claiming several new variants of YBCO, based on Y358. This article also gave no mention of Y358 being discovered by Superconductors.ORG. It only mentioned the Sharif University article.