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:
Dec. 09, 1997
Filed:
Dec. 05, 1995
Franz Graf, Hadamar, DE;
Passavant-Werke AG, , DE;
Abstract
In connection with processes for conditioning soft water (pH less than/equal to 6) to become drinking water, it is necessary to supply hardening agents in order to raise the carbonate-dissolving pH value into the neutral range. Subsequently the turbid materials are flocculated out and the flocculation products are filtered off. Finally, the calcite equilibrium must be set by means of a renewed addition of a hardening agent. This process is simplified by means of the invention in that the calcite equilibrium by means of the supply of highly pure lime water is only set after filtering off the flocculation products. In the flocculation stage, highly pure lime water is also preferably employed for setting the flocculation pH value.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile