Global Patent Index - EP 0412761 A3

EP 0412761 A3 19920520 - SLURRY FOR FORMING INTERLAYER FOR COLLAPSIBLE CORE, METHOD OF PRODUCTION OF COLLAPSIBLE CORE USING SAME AND COLLAPSIBLE CORE PRODUCED THEREBY

Title (en)

SLURRY FOR FORMING INTERLAYER FOR COLLAPSIBLE CORE, METHOD OF PRODUCTION OF COLLAPSIBLE CORE USING SAME AND COLLAPSIBLE CORE PRODUCED THEREBY

Publication

EP 0412761 A3 19920520 (EN)

Application

EP 90308647 A 19900806

Priority

JP 20415989 A 19890807

Abstract (en)

[origin: EP0412761A2] An collapsible core (1) is formed in such a manner that a sand core (1a) is dipped into an acidic suspension having a pH of 5.2 to 6.8 to form an interlayer (2), that the interlayer (2) is coated with an outer layer (3) and that both layers (2, 3) are heat-cured simultaneously.

IPC 1-7

B22C 1/16; B22C 3/00

IPC 8 full level

B22C 3/00 (2006.01); F02F 1/24 (2006.01)

CPC (source: EP)

B22C 3/00 (2013.01); F02F 1/24 (2013.01)

Citation (search report)

  • [A] DE 3826413 A1 19890216 - RYOBI LTD [JP]
  • [A] PATENT ABSTRACTS OF JAPAN vol. 12, no. 437 (M-765)(3284), 17 November 1988; & JP - A - 63171244 (RYOBI LTD) 15.07.1988
  • [A] PATENT ABSTRACTS OF JAPAN vol. 8, no. 148 (M-308)(1585), 11 July 1984; & JP - A - 5945054 (FUJI JUGOKO) 13.03.1984
  • [AD] PATENT ABSTRACTS OF JAPAN vol. 12, no. 437 (M-765)(3284), 17 November 1988; & JP - A - 63171245 (RYOBI LTD) 15.07.1988

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

EP 0412761 A2 19910213; EP 0412761 A3 19920520; AU 6028290 A 19910207; JP H0371950 A 19910327; JP H0659515 B2 19940810

DOCDB simple family (application)

EP 90308647 A 19900806; AU 6028290 A 19900807; JP 20415989 A 19890807