Searching the priority US19890444651Q in Espacenet gives indeed a hit for
JP3178135, but the bibliographic data of this document doesn't show any
priority information in the priority field!
By checking a little further, I found (i) that 19891210 was a sunday and
(ii) that applications US19890444650 and US19890444652 were filed on
19891201.
My conclusion is that the priority date 19891210 is an error and that the
"Q" in the priority data in Espacenet should be a sort of "warning mark".
Thierry DEPIREUX
SOLVAY S.A.
Intellectual Assets Management
Information & Documentation Dept.
e-mail: thierry.depireux@solvay.com
> -----Original Message-----
> From: aengel@intlscience.com [SMTP:aengel@intlscience.com]
> Sent: vendredi 23 juin 2000 17:01
> To: piug
> Subject: An EspaceNet question
>
> I came across the following priority number:
>
> Priority Number(s): US19890444651Q 19891201
>
> What does the 'Q' mean?
>
> The corresponding US patent is 4992388 which
> has the priority number in EspaceNet of
>
> Priority Number(s): US19890444651 19891210
>
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