Global Patent Index - EP 0513625 A1

EP 0513625 A1 19921119 - Concentrate of magnetic ink.

Title (en)

Concentrate of magnetic ink.

Title (de)

Magnetisches Tintenkonzentrat.

Title (fr)

Concentré d'encre magnétique.

Publication

EP 0513625 A1 19921119 (DE)

Application

EP 92107543 A 19920505

Priority

DE 4115608 A 19910514

Abstract (en)

The invention relates to a concentrate of magnetic ink which is essentially composed of a dispersion of superparamagnetic solid particles in water or alcohol in the presence of a dispersant substance, and to a process for producing it.

Abstract (de)

Die Erfindung betrifft ein magnetisches Tintenkonzentrat, im wesentlichen bestehend aus einer Dispersion superparamagnetischer Feststoffteilchen in Wasser oder Alkohol in Gegenwart einer dispergierenden Substanz sowie ein Verfahren zu seiner Herstellung.

IPC 1-7

H01F 41/02

IPC 8 full level

C09D 5/23 (2006.01); C09D 11/00 (2006.01); C09D 11/02 (2006.01); C09D 11/10 (2006.01); H01F 1/44 (2006.01); H01F 41/02 (2006.01); H01F 41/16 (2006.01)

CPC (source: EP US)

H01F 1/44 (2013.01 - EP US); H01F 41/16 (2013.01 - EP US)

Citation (search report)

  • [A] EP 0421249 A1 19910410 - BASF AG [DE]
  • [A] US 3990981 A 19761109 - KOVAC ZLATA, et al
  • [XP] DE 4130268 A1 19920326 - MINNESOTA MINING & MFG [US]
  • [XP] WO 9114260 A1 19910919 - VICAT CIMENTS [FR]
  • [A] PATENT ABSTRACTS OF JAPAN vol. 14, no. 365 (E-961)(4308) 8. August 1990 & JP-2 130 902 ( KATSUTO NAKATSUKA ) 18. Mai 1990
  • [A] PATENT ABSTRACTS OF JAPAN vol. 11, no. 17 (E-471)(2464) 17. Januar 1987 & JP-61 189 607 ( NOK CORP. ) 23. August 1986
  • [A] CHEMICAL ABSTRACTS + INDEXES. Bd. 91, Nr. 6, August 1979, COLUMBUS US Seiten 621 - 622; FUJII: 'Thin layer magnets'

Designated contracting state (EPC)

DE FR GB NL

DOCDB simple family (publication)

EP 0513625 A1 19921119; EP 0513625 B1 19941130; DE 4115608 A1 19921119; DE 59200833 D1 19950112; JP 3036968 B2 20000424; JP H05140492 A 19930608; US 5250207 A 19931005; US 5500141 A 19960319

DOCDB simple family (application)

EP 92107543 A 19920505; DE 4115608 A 19910514; DE 59200833 T 19920505; JP 11869892 A 19920512; US 30482194 A 19940913; US 87901192 A 19920506