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:
Sep. 28, 2010
Filed:
Apr. 14, 2003
Laurence E. Allen, San Rafael, CA (US);
Brian L. Riise, Richmond, CA (US);
Paul C. Allen, El Cerrito, CA (US);
Ron C. Rau, Oakland, CA (US);
Michael B. Biddle, El Cerrito, CA (US);
Laurence E. Allen, San Rafael, CA (US);
Brian L. Riise, Richmond, CA (US);
Paul C. Allen, El Cerrito, CA (US);
Ron C. Rau, Oakland, CA (US);
Michael B. Biddle, El Cerrito, CA (US);
MBA Polymers, Inc., Richmond, CA (US);
Abstract
Multistep recycling processes for preparing recycled plastic materials. The processes feature a sequence of operations selected from the group consisting of preprocessing operations, size reduction operations, gravity concentration operations, color sorting, sorting by thickness, friction, or differential terminal velocity or drag in air, surface to mass control operations, separation processes enhanced by narrow surface to mass distributions, blending operations, and extrusion and compounding operations. Plastic-rich mixtures are subjected to the process, and one or more recycled plastic materials are collected as outputs of the sequence of processes.