US Patent Issued to Sumitomo Pharma, Richter Gedeon Nyrt. on Sept. 15 for "Crystalline solvated forms of N-(4-(1-(2,6-difluorobenzyl)-5-((dimethylamino)methyl)-3-(6-methoxy-3-pyridazinyl)-2,4-dioxo-1,2,3,4-tetrahydrothieno[2,3-dpyrimidin-6-yl)phenyl)-N'-methoxyurea" (Hungarian, American Inventors)

Posted On: 2026-09-15

ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,735,430, issued on Sept. 15, was assigned to Sumitomo Pharma Co. Ltd. (Osaka, Japan) and Richter Gedeon Nyrt. (Budapest, Hungary).

"Crystalline solvated forms of N-(4-(1-(2,6-difluorobenzyl)-5-((dimethylamino)methyl)-3-(6-methoxy-3-pyridazinyl)-2,4-dioxo-1,2,3,4-tetrahydrothieno[2,3-dpyrimidin-6-yl)phenyl)-N'-methoxyurea" was invented by Petinka I. Vlahova (West Lafayette, Ind.), Jennifer Nelson (Kokomo, Ind.), Michael Thomas Brandl (Redwood City, Calif.), Adrienn Szentes (Porva, Hungary), Zoltan Kazsu (Budapest, Hungary) and Adam Demeter (Budapest, Hungary).

According to the abstract* released by the U.S. Patent & Trademark Office: "This disclosure relates to crystalline solvated f...

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US Patent Issued to Sumitomo Pharma, Richter Gedeon Nyrt. on Sept. 15 for "Crystalline solvated forms of N-(4-(1-(2,6-difluorobenzyl)-5-((dimethylamino)methyl)-3-(6-methoxy-3-pyridazinyl)-2,4-dioxo-1,2,3,4-tetrahydrothieno[2,3-dpyrimidin-6-yl)phenyl)-N'-methoxyurea" (Hungarian, American Inventors)