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:
Aug. 18, 1987
Filed:
Oct. 29, 1985
Kuwait Institute for Scientific Research, Safat, KW;
Abstract
An agricultural mulch film is prepared by mixing conventional plant nutrients with a water-soluble polymer such as polyvinyl alcohol. The mixture is cast in the liquid form and allowed to dry to form a thin film. The dried film is then coated with a thin layer of a water-resistant resin such as polyvinyl acetate to form a composite mulch film. The release of the nutrients contained in the mulch film is controlled by the addition to the water-soluble polymer mixture of either (1) a nitrification inhibitor along with urea, or (2) a water-soluble urea-formaldehyde condensation product. The release of the nutrients is also controlled somewhat by the water-resistant resin coating. Other additives may be added to the mulch film to produce a multi-purpose product.