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. 07, 1989
Filed:
May. 08, 1987
Raymond Le Van Mao, Montreal, Quebec, CA;
Gerald P McLaughlin, Montreal, Quebec, CA;
Pierre Levesque, Montreal, Quebec, CA;
Jacques Dunnigan, Sherbrooke, Quebec, CA;
Other;
Abstract
The present invention relates to a method for enhancing the water-retention capacity of soils and providing plant nutrients to same over an extended period of time. This method comprises the admixing of soils with from 2 to 30% by weight of a chryso-zeolite of type A/and or X which comprises a magnesium leached asbestos matrix having an SiO.sub.2 content of 37 to 60% wt %, an MgO content of 0.1 to 15% by weight, an Fe.sub.2 O.sub.3 content of 0.1 to 2.5% by weight and containing from 10 to 25% by weight of Al.sub.2 O.sub.3 and from 25 to 35% by weight of Na.sub.2 O, and/or K.sub.2 O, and/or CaO, and/or (NH.sub.4).sub.2 O.