Search options available in STN databases - FIZ Karlsruhe

6.4 Dynamics
36
Guide to STN Patent Databases
The Derwent World Patents Index database follows the dynamic principle at invention level. Upon arrival of the first
created in the database. The bibliographical details of later documents of the same patent family (having the same
prio
data to the AI field, classification to the IPC field, a new abstract to the AB (ABEQ) field, etc. In some cases (e.g.
division, continuation) a new record is created in the database and a cross reference is made in the CR field.
To record updates to an existing document (patent family) there are a number of Update fields being amended or
overwritten (cf. chapter Monitoring patents). There are counter fields for the number of countries (CYC Country
Count) and patent numbers (PNC Patent Number Count) being updated whenever an Equivalent is added.
In addition available data are added at publication level (original text data, bibliographical details from the original,
possibly additional abstract ABEQ, up to 1997). A separate publication level record is created for each country.
These being original data, only re-assigned IPC and US classification data will be updated.
6.5 Updating
New documents are entered into the World Patents Index approx. 15 days up to some months after publication,
depending on the subject field and patent office.
6.6 Document from World Patents Index
Display format: MAXG MEMB
Invention level
AN 2006-028530 [200603] WPINDEX
ED 20060112
DNC C2006-009761 [200603]
TI Juicer and grater assembly to extract juice from cut citrus fruit and
grate skin of citrus fruit, has extractor removably secured on strainer in
positions where tab covers aperture to allow extracted juice to flow
through another aperture
DC D14; P28
IN DE G J H; DE GROOTE J; JAN H D G; DE G J
PA (REXA-C) DART IND INC; (DGRO-I) DE GROOTE J
CYC 46
PI US 20050284309 A1 20051229 (200603)* EN 7[6]