Search Images Maps Play YouTube Gmail Drive Calendar More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberDE3324671 A1
Publication typeApplication
Application numberDE19833324671
Publication date17 Jan 1985
Filing date8 Jul 1983
Priority date8 Jul 1983
Also published asDE3324671C2
Publication number19833324671, 833324671, DE 3324671 A1, DE 3324671A1, DE-A1-3324671, DE19833324671, DE3324671 A1, DE3324671A1, DE833324671
InventorsErich Baltes, Heinrich Bender, Raimund Rosellen, Erich Helbig
ApplicantDidier Werke Ag
Export CitationBiBTeX, EndNote, RefMan
External Links: DPMA, Espacenet
Use of an industrial sewage sludge
DE 3324671 A1
The invention relates to the use of an industrial sewage sludge for the production of a constructional material in that organic and/or inorganic additives are added to the sewage sludge. The sewage sludges produced in many industrial sectors as waste products are converted as a result in a simple manner into valuable constructional materials, as a result of which the disposal of the sludges is not necessary and, at the same time, a particularly environmentally-friendly, economical method having many applications is created for the further processing of the sewage sludges.
Description  available in
Claims  available in
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
DE3150718A1 *22 Dec 198130 Jun 1983Opel Adam AgMaterial based on synthetic resins which can be used for painting
GB2048288A * Title not available
Non-Patent Citations
1 *Chemical Abstracts, 1981, 95, 205528m
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
DE4010898A1 *4 Apr 199010 Oct 1991Klaus Holding AgBuilding material prodn. - using raw clarification sludge mixed with fibres and binder or swelling agent
DE4203866C1 *11 Feb 199216 Sep 1993Environmental Techn Eur LtdTitle not available
EP0280753A1 *5 Mar 19877 Sep 1988Georg Dr. FritschProcess for eliminating harmful wastes
US772732928 Feb 20081 Jun 2010James Hardie Technology LimitedFiber cement building materials with low density additives
US79935707 Oct 20039 Aug 2011James Hardie Technology LimitedDurable medium-density fibre cement composite
US799857111 Jul 200516 Aug 2011James Hardie Technology LimitedComposite cement article incorporating a powder coating and methods of making same
US81826067 Jun 201022 May 2012James Hardie Technology LimitedFiber cement building materials with low density additives
US820992720 Dec 20073 Jul 2012James Hardie Technology LimitedStructural fiber cement building materials
US899346212 Apr 200731 Mar 2015James Hardie Technology LimitedSurface sealed reinforced building element
WO2004071987A1 *17 Feb 200426 Aug 2004Greenbuild GroupBuilding materials made from waste materials and method for making same
International ClassificationC04B28/02, C04B18/04, C04B18/16, C09D5/34
Cooperative ClassificationC04B18/16, C04B18/0418, C09D5/34, C04B28/02, Y02W30/95, Y02W30/91
European ClassificationC04B18/16, C09D5/34, C04B18/04C, C04B28/02
Legal Events
17 Jan 1985OP8Request for examination as to paragraph 44 patent law
5 Feb 1987D2Grant after examination
30 Jul 19878364No opposition during term of opposition
16 Jul 19928339Ceased/non-payment of the annual fee