IP Library Granted Patent US 7,537,789
Granted Patent B1
US 7,537,789 · App. 11/182,275 · Granted May 26, 2009

System controlling soluble phosphorus and nitrates and other nutrients, and a method of using the system

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Quick Facts
Patent No.
US 7,537,789
App. No.
11/182,275
Granted
May 26, 2009
Kind
B1
Abstract

The invention includes an alkali metal silicate based solution that, either alone or following an alkali earth metal salt activator, binds soluble phosphorus and/or nitrates.

Claims (1)

1. A composition for treating animal waste having naturally excessive amounts of phosphorus or nitrates, said composition comprising an aqueous alkali metal silicate comprising aqueous sodium silicate at a concentration in the range of about 20% by weight, an anionic surfactant comprising an ester of organo-phosphoric acid comprising a concentration range of about 1% by weight, and a polyol comprising propylene glycol comprising a concentration range of about 1% by weight, said composition chemically binding soluble phosphorus into a stable complex, said binding composition able to bind up to 50% of such soluble phosphorus.

Assignments (4)
RELEASE OF LIEN Recorded Apr 15, 2014
From: CALHOUN LAW FIRM
To: ENVIROVEST LLC (C/O ROLAND GUNN); SELBY, E FIELD; HARDEE, JOHN; HENRY, JOE
Reel/Frame 032693/0733 →
CORRECTIVE ASSIGNMENT TO CORRECT THE NAME OF CONVEYING PARTIES PREVIOUSLY RECORDED ON REEL 022646 FRAME 0677. ASSIGNOR(S) HEREBY CONFIRMS THE SECURITY AGREEMENT. Recorded Sep 30, 2009
From: ENVIROVEST LLC
To: JOE D. CALHOUN LTD D/B/A CALHOUN LAW FIRM
Reel/Frame 023292/0995 →
SECURITY AGREEMENT Recorded Mar 24, 2009
From: HENRY, JOE D.; SELBY, FIELD
To: JOE D. CALHOUN LTD. D/B/A CALHOUN LAW FIRM
Reel/Frame 022646/0677 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 15, 2006
From: HENRY, JOE D.; HARDEE, JOHN R.; SELBY, E. FIELD
To: ENVIROVEST LLC
Reel/Frame 018125/0718 →