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:
Oct. 28, 1997
Filed:
Dec. 07, 1995
Carole Bourbon, La Buisse, FR;
Mehdi Moussavi, Meylan, FR;
Commissariat a l'Energie Atomique, Paris, FR;
Abstract
The invention relates to a solution containing a nitroxide radical for magnetometry by nuclear magnetic resonance. This solution is constituted by a nitroxide radical of formula: ##STR1## in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4, which can be the same or different, represent an alkyl group or an alkoxy group which may be deuterated, or in which the pairs R.sup.1 -R.sup.2 and/or R.sup.3 -R.sup.4 together form an optionally deuterated cycloalkyl or polycycloalkyl group, and N represent .sup.14 N or .sup.15 N, dissolved in a solvent having an oxidizing power and an appropriate viscosity. The solvent can be constituted by a mixture of water and two compounds respectively playing the part of the oxidizing agent and viscosity modifying agent, e.g. water, ethylene glycol and NalO.sub.4, or can be solely constituted by a mixture of water and an oxidizing agent able to modify the viscosity, such as acetic acid.