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. 31, 2011
Filed:
Oct. 08, 2008
Vincent Fedele, Acton, MA (US);
Philip Gaudet, Rockport, ME (US);
Daniel Henri Raguin, Acton, MA (US);
Vincent Fedele, Acton, MA (US);
Philip Gaudet, Rockport, ME (US);
Daniel Henri Raguin, Acton, MA (US);
Voice Systems Technology, Inc., Harvard, MA (US);
Abstract
A coffee refractometer includes a prism that receives a brewed coffee sample, thus forming a prism-sample interface. A processor or microcontroller controls a light source to provide incident light to the prism-sample interface. The prism-sample interface refracts light toward a photodetector. A temperature sensor provides temperature information to the processor. The refractometer includes a memory store that stores a TDS formula that expresses the TDS of brewed coffee as a function of the index of refraction (n) of brewed coffee and the temperature of brewed coffee. The processor determines the TDS of the brewed coffee sample by accessing the TDS formula in the memory store and employing the determined index of refraction (n) of the brewed coffee sample to find the TDS from the TDS formula. The refractometer displays the resultant TDS % on a display of the refractometer and/or transmits such information to an information handling system.