Title (en)

Tablets and method for preventing or diminishing formation of deposits in water collection systems for construction works

Title (de)

Depotsteine und Verfahren zur Verhinderung bzw. Verminderung der Bildung von Ablagerungen in Bauwerksentwässerungssystemen

Title (fr)

Tablettes et méthode pour la prévention ou la diminution de la formation de dépôts dans les systèmes d'évacuation des eaux des ouvrages de construction

Publication

EP 0950641 A3 20000412 (DE)

Application

EP 99105768 A 19990322

Priority

CH 86498 A 19980415

Abstract (en)

[origin: CH689452A5] Method (I) of inhibiting deposits of cement in drainage systems for buildings, is new. (I) comprises adding conditioner to the percolating or ground water to be drained off

IPC 1-7

C02F 5/08

IPC 8 full level

E01B 1/00 (2006.01); E02D 31/02 (2006.01); E21F 16/02 (2006.01)

CPC (source: EP)

E01B 1/008 (2013.01); E02D 31/02 (2013.01); E21F 16/02 (2013.01)

Citation (search report)

• [Y] WO 9419288 A1 19940901 - NALCO CHEMIE GMBH DEUTSCHE [DE], et al
• [A] US 2251080 A 19410729 - PRATT TABER ARTHUR
• [A] US 5456920 A 19951010 - MATOBA HIROSHI [JP], et al
• [Y] PATENT ABSTRACTS OF JAPAN vol. 012, no. 033 (C - 472) 30 January 1988 (1988-01-30)
• [A] PATENT ABSTRACTS OF JAPAN vol. 1995, no. 05 30 June 1995 (1995-06-30)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

CH 689452 A5 19990430; CH 689452 C1 20041130; DE 29905245 U1 19990617; EP 0950641 A2 19991020; EP 0950641 A3 20000412

DOCDB simple family (application)

CH 86498 A 19980415; DE 29905245 U 19990322; EP 99105768 A 19990322