GPI coverage and content

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

GPI key values

Run regular monitoring (e.g. monthly or quarterly) of technical areas or companies

Use built-in charts to visualise technical trends and patenting activity of companies

Choose the data you want to see and download to focus on what you are interested in

Run data quality assessments to measure the risk of incomplete search results

EP 0245550 B1 19901219 - CYLINDER HEAD FOR AN INTERNAL COMBUSTION ENGINE

Title (en)

CYLINDER HEAD FOR AN INTERNAL COMBUSTION ENGINE

Publication

EP 0245550 B1 19901219 (EN)

Application

EP 86303651 A 19860514

Priority

EP 86303651 A 19860514

Abstract (en)

[origin: EP0245550A1] An internal combustion reciprocating piston engine is provided with a single overhead camshaft (26) which operates six valves associated with a single combustion chamber (14) by desmodromic valve gear. As viewed in a direction along the camshaft, the valves are mutually divergent in the direction from the camshaft towards the combustion chamber and some valve pairs are more divergent than are other valve pairs.

IPC 1-7

F01L 1/26; F01L 1/30; F02F 1/42

IPC 8 full level

F01L 1/26 (2006.01); F02B 1/04 (2006.01); F02F 1/24 (2006.01)

CPC (source: EP)

F01L 1/265 (2013.01); F02B 1/04 (2013.01); F02B 2275/20 (2013.01); F02F 2001/245 (2013.01)

Designated contracting state (EPC)

AT BE CH DE FR GB IT LI LU NL SE

DOCDB simple family (publication)

EP 0245550 A1 19871119; EP 0245550 B1 19901219; AT E59215 T1 19910115; DE 3676300 D1 19910131

DOCDB simple family (application)

EP 86303651 A 19860514; AT 86303651 T 19860514; DE 3676300 T 19860514