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 0439944 A3 19910828 - TWO-SIDE IMAGEABLE PHOTOTHERMOGRAPHIC PAPER

Title (en)

TWO-SIDE IMAGEABLE PHOTOTHERMOGRAPHIC PAPER

Publication

EP 0439944 A3 19910828 (EN)

Application

EP 90313868 A 19901219

Priority

US 47277790 A 19900131

Abstract (en)

[origin: EP0439944A2] Two-side coated paper dry silver photothermographic imaging elements suffer from bubbling on the second coated side. The use of polyvinylacetate as part of the binding media for the second coated emulsion has been found to reduce the problem.

IPC 1-7

G03C 1/498

IPC 8 full level

G03C 1/498 (2006.01); G03C 1/76 (2006.01)

CPC (source: EP)

G03C 1/49863 (2013.01)

Citation (search report)

[X] US 3672933 A 19720627 - LIEBERMAN MARVIN FRANK
[A] PATENT ABSTRACTS OF JAPAN vol. 3, no. 86 (E-125)() 24 July 1979, & JP-A-54 65026 (FUJI) 25 May 1979,

Designated contracting state (EPC)

BE DE FR GB IT NL

DOCDB simple family (publication)

EP 0439944 A2 19910807; EP 0439944 A3 19910828; CA 2029980 A1 19910801; JP H05197066 A 19930806

DOCDB simple family (application)

EP 90313868 A 19901219; CA 2029980 A 19901114; JP 969991 A 19910130