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:
Nov. 26, 1996
Filed:
Feb. 28, 1995
Applicant:
Inventor:
Hermanus H Oude Luttighuis, Rhenen, NL;
Assignee:
Grontmij Advies & Techniek BV, De Bilt, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ;
U.S. Cl.
CPC ...
96108 ; 96154 ;
Abstract
The invention relates to a biological filter for the purification of waste gasses, which filter is provided with a bed of pelletized biologically active compost carrier material. The invention also relates to a method for the production of the spherical biologically active material without the use of additives. According to the invention the biologically active compost carrier material is present in the form of very stable spherical pellets. The bed of pelletized biologically active compost carrier material consists of one or more layers.