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:
Apr. 19, 2005
Filed:
Aug. 27, 2003
Gersh Zvi Taicher, Houston, TX (US);
Arcady Reiderman, Houston, TX (US);
Gersh Zvi Taicher, Houston, TX (US);
Arcady Reiderman, Houston, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
The present invention provides an improved NMR sequence for detecting small amount of a substance having short NMR transversal relaxation in the presence of a large amount of a substance having long NMR relaxation. A sequence of pulses enables the original z-oriented magnetization vector of a substance to experience differing reorientation effects based on the relative transverse relaxation rate of the substance. After said pulse sequence, a substance with long transverse relaxation experiences a substantial inversion of its nuclear magnetization vector, while a substance with short transverse relaxation experiences a nearly zero value of its vector. After a determinable wait time, said vectors can be shown to experience recognizably different behavior under the application of a CPMG sequence of pulses. Appropriate wait time can be determined by zeroing out spin echoes during the CPMG pulse sequence.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile