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Current content: 158 383 361 patent documents

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131 418 new documents added

1 347 785 documents amended

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EP 0347367 B1 19930414 - PROCESS FOR PRODUCING A VACUUM

Title (en)

PROCESS FOR PRODUCING A VACUUM

Publication

EP 0347367 B1 19930414 (DE)

Application

EP 89730135 A 19890601

Priority

DE 3820951 A 19880616

Abstract (en)

[origin: EP0347367A2] The invention relates to a process for producing a vacuum in hollow bodies, preferably made of metallic materials, in particular of steel, and is characterised in that metal hydride laden with hydrogen is introduced into the hollow body and hydrogen gas displaced upon heating the hollow body is released. <IMAGE>

IPC 1-7

C01B 3/00; F04B 37/02; F16L 59/06

IPC 8 full level

B01J 3/00 (2006.01); C01B 3/00 (2006.01); F04B 37/02 (2006.01); F16L 59/06 (2006.01)

CPC (source: EP US)

F04B 37/02 (2013.01 - EP US)

Designated contracting state (EPC)

DE ES FR GB IT

DOCDB simple family (publication)

EP 0347367 A2 19891220; EP 0347367 A3 19910227; EP 0347367 B1 19930414; DE 58904045 D1 19930519; ES 2041033 T3 19931101; JP 2721996 B2 19980304; JP H0243938 A 19900214; US 4973227 A 19901127

DOCDB simple family (application)

EP 89730135 A 19890601; DE 58904045 T 19890601; ES 89730135 T 19890601; JP 15200989 A 19890614; US 36702589 A 19890616