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:
Mar. 31, 2026
Filed:
Dec. 09, 2020
Denka Company Limited, Tokyo, JP;
DENKA COMPANY LIMITED, Tokyo, JP;
Abstract
A liquid humic acid extract that does not form precipitates when combined with a liquid fertilizer containing at least one of Mg, Fe, Zn and Mo and having an electric conductivity of 90 ms/cm or more. A liquid humic acid extract containing humic acid that has a mass-average molecular weight of 100 to 1,200, and having a total organic carbon concentration of 15,000 to 25,000 mg/L and a pH of 0.5 to 4.0. Preferably, the liquid humic acid extract contains a humic acid having a mass-average molecular weight of 100 to 1,200, and has a total organic carbon concentration of 15,000 to 25,000 mg/L and a pH of 0.5 to 4.0. A liquid humic acid extract that hardly forms precipitates and realizes an increase in the crop yield.