Both the patent grant and published patent application databases require at
least three characters before right truncation in the ICL field.
Regards,
Larry Larson, USPTO
> -----Original Message-----
> From: Thierry.Depireux@solvay.com [mailto:Thierry.Depireux@solvay.com]
> Sent: Tuesday, February 12, 2002 9:08 AM
> To: senthil8@hotmail.com
> Cc: piug-l@derwent.co.uk
> Subject: RE: USPTO Patent Application Search
>
>
> I have already observed that truncation in the ICL field
> doesn't work when
> the "root" of the search term is too short: e.g.: C07C3$ or
> c07C313/1$ are
> OK, but C07$ or even C07C$ do not work. (I don't remember if
> the same is
> true for the granted patent database).
>
> Best regards,
>
> Thierry DEPIREUX
>
> SOLVAY S.A.
> Intellectual Assets Management
> Technical Information, Operating Manager
> e-mail: thierry.depireux@solvay.com
>
>
> > -----Original Message-----
> > From: K.Senthil Kumar [SMTP:senthil8@hotmail.com]
> > Sent: Tuesday, February 12, 2002 1:43 PM
> > To: piug-l@derwent.co.uk
> > Subject: USPTO Patent Application Search
> >
> > When I did a search for pd/20020131 and icl/C07$ in the
> USPTO's Patent
> > Application database, I am getting only 2 patents. But for
> the same search
> >
> > in espacenet it gives 135 patents.
> >
> > Similarily for pd/20020103 and icl/C07$ it is 12 and 116
> respectively.
> >
> > I would appreciate if somebody can highlight the mistake in my USPTO
> > search
> > or is there any limitation in doing a search like this in the USPTO
> > Application database.
> >
> > Regards
> >
> > K. Senthilkumar
> > Scientist-Information Systems
> > APL Research Centre
> > Aurobindo Pharma Ltd.
> > Plot No.2, Maitri Vihar
> > Ameerpet
> > Hyderabad-500 038
> > India
> >
> >
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> >
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