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. 25, 2013
Filed:
May. 07, 2010
Michael John Preiner, Palo Alto, CA (US);
Nicholas Carleton Koshnick, Palo Alto, CA (US);
Justin Stewart White, Palo Alto, CA (US);
John Paul Strachan, Millbrae, CA (US);
Michael John Preiner, Palo Alto, CA (US);
Nicholas Carleton Koshnick, Palo Alto, CA (US);
Justin Stewart White, Palo Alto, CA (US);
John Paul Strachan, Millbrae, CA (US);
Solum, Inc., Mountain View, CA (US);
Abstract
The nitrate-nitrogen concentration in soil is estimated based on the nitrate-nitrogen 200 nm absorption peak. In one embodiment, a device measures the attenuation spectrum of a soil-extractant mixture over a wavelength range that includes wavelengths in the vicinity of the 200 nm absorption peak (the spectral operating range) and then determines the nitrate-nitrogen concentration based on the attenuation spectrum.