The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 17, 2014
Filed:
Sep. 14, 2012
Jean-francois Letard, Canejan, FR;
Olivier Nguyen, Hostens, FR;
Nathalie Daro, Pessac, FR;
Centre National de la Recherche Scientifique, Paris, FR;
Abstract
The invention relates to a material composed of nanoparticles essentially comprising a spin transition compound. The compound corresponds to the formula in which L represents a 1,2,4-triazole ligand carrying an R substituent on the nitrogen in the 4 position; X is an anion having the valency x, 1≦x≦2; Y is an anion other than X having the valency x', 1≦x′≦2; R is an alkyl group or an RRN— group in which Rand Rrepresent, each independently of the other, H or an alkyl radical; M is a metal having a 3d, 3d, 3dor 3dconfiguration, other than Fe; 0≦y≦1; 0≦z≦2; 3≦w≦1500. Applications: thermochromic pigment, data storage, optical limiters, contrast agent.