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. 04, 1992
Filed:
Oct. 02, 1989
Martin Katz, Menlo Park, CA (US);
Chung-Heng Cheng, San Jose, CA (US);
Advanced Polymer Systems, Inc., Redwood City, CA (US);
Abstract
Immiscible phases, particularly polar and non-polar liquids, semi-solids or solids, are combined in a composition where one is finely dispersed throughout the other without reliance upon emulsifying agents to either create or stabilize the dispersion. The composition is formed by placing the discontinuous phase in the pores of solid inert porous particles, in which the pores are in the form of an interconnected network open to the exterior of the particles to provide interfacial contact with the continuous phase. The particles are then dispersed in the continuous phase. The concept is applicable to oil-in-water and water-in-oil type dispersions, and the disadvantages and shortcomings of emulsifying agents are entirely avoided.