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: 157 117 910 patent documents

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

139 301 new documents added

1 340 825 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 0752732 B1 20010530 - Microwave filter

Title (en)

Microwave filter

Title (de)

Mikrowellenfilter

Title (fr)

Filtre hyperfréquence

Publication

EP 0752732 B1 20010530 (DE)

Application

EP 96106998 A 19960503

Priority

DE 19524263 A 19950704

Abstract (en)

[origin: DE19524263C1] The microwave filter consists of a several rectangular wave guide resonators (R1-R4) organised on the same plane, and are coupled together by inductive elements (K11,K12,K23C,K34,K40). A coupling for the two main paths is provided by a bridging element (K14) between electrically non adjacent resonators (R1,R4). The phase value of the bridging element determines if the damping poles of the filter characteristic are above or below the transmission range.

IPC 1-7

H01P 1/208

IPC 8 full level

H01P 1/208 (2006.01)

CPC (source: EP)

H01P 1/208 (2013.01)

Designated contracting state (EPC)

CH DE FR IT LI SE

DOCDB simple family (publication)

DE 19524263 C1 19961017; DE 59606982 D1 20010705; EP 0752732 A1 19970108; EP 0752732 B1 20010530

DOCDB simple family (application)

DE 19524263 A 19950704; DE 59606982 T 19960503; EP 96106998 A 19960503