MUMBAI, India, Sept. 22 -- Intellectual Property India has published a patent application (202647101127 A) filed by Bio-Gram Hematology Gmbh on August 21, 2026, for Staining Reagent.

Inventors include Cucu, Bayram; Gounalakis, Charilaos; and Blakaj, Petrit.

The application for the patent was published on September 18, 2026, under issue no. 38/2026.

Abstract: The invention relates to a staining reagent for carrying out histological and/or hematological stainings, comprising A) at least one solvent in a proportion of 55% by volume to 99.95% by volume, selected from the group consisting of A1) esters of the formula R1-C(=O)-O-R2, A2) ethers of the formula R3-O-R4, A3) sulfoxides of the formula R5-S(=O)-R6, A4) sulfones of the formula R7-S(=O)2-R8, A5) monohydric alcohols in which the alcoholic OH group is bonded to an aliphatic C atom in a hydrocarbon group of 4 to 8 carbon atoms, A6) diols which have 2 OH groups on an aliphatic hydrocarbon radical with 3 to 6 carbon atoms, A7) formals of the formula R9-O-CH2-O-R10, A8) dihydrolevoglucosenone, A9) propylene carbonate, and A10) N-butylpyrrolidone; B) at least one staining pigment in a proportion of 0.05% by volume to 7% by volume; and C) optionally an additional solvent selected from the group consisting of dimethyl sulfoxide, water, monohydric alcohols with 1 to 3 carbon atoms, and sugar alcohols, wherein R1 represents a C4 to C8 alkyl group or a group of the formula R2-O-C(=O)-R-; R2 represents a C1 to C4 alkyl group; R represents a C2 to C6 alkylene group; R3 represents a C2 to C4 alkyl group which can have an OH group; R4 represents a group of the formula -R11-(O-R12-)n-R13; R11 represents a C2 to C4 alkylene group; R12 represents a C1 to C4 alkylene group; R13 represents H, OH or -O-C(=O)-CH3; n represents 0, 1, 2 or 3; and R5 and R6 independently of one another represent a C1 to C4 alkyl group, with the proviso that the sum of the number of carbon atoms in R5 and R6 is 3 or higher, R7 and R8 independently of one another represent a C1 to C4 alkyl group, and R9 and R10 independently of one another represent a C4 to C8 alkyl group.

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