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You can use Global Patent Index (GPI) to carry out detailed searches in the EPO's worldwide bibliographic (DOCDB), legal event (INPADOC) and full-text data sets, and download or visualise the search results for statistical analysis.

Current content: 157 337 350 patent documents

This week's update (19/07/2024 12:00 CET):

219 431 new documents added

1 247 852 documents amended

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EP 0104639 A3 19860326 - PROCESS FOR IMPROVING CARBON FIBERS

Title (en)

PROCESS FOR IMPROVING CARBON FIBERS

Publication

EP 0104639 A3 19860326 (EN)

Application

EP 83109581 A 19830926

Priority

US 42312182 A 19820927

Abstract (en)

[origin: EP0104639A2] A process for producing a carbon fiber having very high Young's modulus includes a post heat treatment for a carbon fiber wound onto a bobbin.

IPC 1-7

D01F 9/14; D01F 9/22

IPC 8 full level

D01F 9/14 (2006.01); D01F 9/145 (2006.01); D01F 9/22 (2006.01)

CPC (source: EP)

D01F 9/14 (2013.01); D01F 9/145 (2013.01); D01F 9/22 (2013.01)

Citation (search report)

[X] FR 1471993 A 19670303 - ROLLS ROYCE
[X] FR 1558690 A 19690228

Designated contracting state (EPC)

DE FR GB IT NL

DOCDB simple family (publication)

EP 0104639 A2 19840404; EP 0104639 A3 19860326; CA 1219410 A 19870324; JP S5976926 A 19840502

DOCDB simple family (application)

EP 83109581 A 19830926; CA 437386 A 19830923; JP 17655783 A 19830926