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: 159 823 134 patent documents

This week's update (15/11/2024 12:00 CET):

143 307 new documents added

1 003 170 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 0430630 A3 19910710 - ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND METHOD OF FORMING IMAGES

Title (en)

ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND METHOD OF FORMING IMAGES

Publication

EP 0430630 A3 19910710 (EN)

Application

EP 90312847 A 19901127

Priority

JP 3435990 A 19900215
JP 3436090 A 19900215
JP 30871689 A 19891128

Abstract (en)

[origin: EP0430630A2] An electrophotographic photoreceptor comprising a conductive substrate and, provided thereon, a photoreceptive layer comprising a phthalocyanine pigment and a binder resin, wherein the phthalocyanine pigment has water molecules adsorbed thereon in a numerical amount greater than any other molecules, as measured by a vacuum method.

IPC 1-7

G03G 5/06

IPC 8 full level

G03G 5/06 (2006.01)

CPC (source: EP)

G03G 5/0696 (2013.01)

Citation (search report)

[A] EP 0228202 A1 19870708 - ASAHI CHEMICAL IND [JP]
[A] DE 3821628 A1 19890105 - MINOLTA CAMERA KK [JP]
[A] PATENT ABSTRACTS OF JAPAN vol. 13, no. 417 (C-636)(3765) 14 September 1989, & JP-A-1 153757 (TOYO INK MFG.,CO.,LTD.) 15 June 1989,

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0430630 A2 19910605; EP 0430630 A3 19910710

DOCDB simple family (application)

EP 90312847 A 19901127