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:
Apr. 17, 1990
Filed:
Nov. 25, 1987
John L Clarke, Jr, Riverside, IL (US);
Other;
Abstract
A gypsum-based pesticide product and method of manufacture of such product in which the product has a release time for the pesticide which is determined at least in part by its size and in which the gypsum is a solid formed by the bonding of plaster of Paris and water. The product, prior to formation of the solid, includes, by weight, no more than about 20% water, approximately 5% of pesticide, with the balance being plaster of Paris. The ingredients, prior to formation into a solid, are intimately mixed for a time period which is only a fraction of the setting time of the mixture with the amount of water being no greater than that required to completely set the plaster of Paris into gypsum.