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:
Jul. 20, 1993
Filed:
Dec. 10, 1990
Carl R Lindstrom, Cambridge, MA (US);
Clivus Multrum, Inc., Lawrence, MA (US);
Abstract
A system and method is disclosed for composting feces and treating. Human feces is collected within a composting retainer and exposed to sufficient air and water to allow the feces to compost, thereby forming compost product. Urine is collected within an urine treatment retainer which is at least partially partitioned from the composting retainer and wherein the urine is passed through a substrate supporting aerobic nitrifying bacteria, thereby nitrifying a significant portion of the ammonium ions in the urine to form liquid product. The compost product is suitable for subsequent use, such as fertilizer or for use in forming a mixture with soil to form topsoil.