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:
May. 11, 2010
Filed:
Mar. 11, 2004
John J. Hefti, San Francisco, CA (US);
Dean M. Drako, Woodside, CA (US);
John J. Hefti, San Francisco, CA (US);
Dean M. Drako, Woodside, CA (US);
Other;
Abstract
A system operable to monitoring bio/chemical activities includes a first measurement probe, a second measurement probe and a comparator. The first measurement probe is operable to interrogate one or more physical properties of a sample at a first location of the sample, and to output, in response, a first measurement signal. The second measurement probe is operable to interrogate one or more physical properties of the sample at a second location of the sample, and to output, in response, a second measurement signal. The comparator is coupled to receive the first and second measurement signals, the comparator configured to output a difference signal comprising the difference between the first and second measurement signals, the difference signal corresponding to the difference in one or more bio/chemical activities occurring at the first location of the sample relative to the second location of the sample.