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:
Feb. 20, 2007
Filed:
Jan. 26, 2001
John H. Schneider, Richardson, TX (US);
Steven B. Laramay, Mesquite, TX (US);
John H. Schneider, Richardson, TX (US);
Steven B. Laramay, Mesquite, TX (US);
Fritz Industries, Inc A Texas Corporation, Mesquite, TX (US);
Abstract
This invention discloses, as an article of manufacture, a capsule having a hollow interior and an enclosing wall, referred to as a membrane. The membrane is not soluble in water, but is permeable to water or an aqueous solution. The membrane is comprised of a first material and can also include a second material. When the membrane is comprised of the first material and the second material, then it is referred to as a composite material wherein the first material forms sporting matrix having the second material fixed in the matrix. The first material is a urethane/vinyl hybrid polymer and is not soluble in, reactive with or a solvent for the second material. The second material is a particulate solid, different from the first material, and is not soluble in, reactive with or a solvent for the first material. The capsule of this invention is useful to maintain in the hollow interior thereof a solid, water-soluble first chemical composition which is not soluble in, reactive with or a solvent for the enclosing wall of the capsule. In operation, the exterior of the capsule, having the first composition maintained in the interior thereof, is placed in contact with a water-soluble second chemical composition which is not soluble in, reactive with or a solvent for the enclosing wall of the capsule, but which is reactive with the first chemical composition.