Quality of Free Patent Searches on the IBM site?

From: ChathamRes@aol.com
Date: Wed Jan 27 1999 - 16:51:58 EET

Professor Santillan pointed out a way of obtaining free patents as described
in the attached Email:

What exactly do you give up when you use this means to do a search for RP

1. If you search for the topic stereolithography on the IBM server, you will
find 103 patents that match.

The same search done on 3D RP Patents 99 showed more than 300 patents that met
that search term.

2. If you search for "stereolithography AND curl" on the IBM site, you will
find 9 patents that match.

The same search within 3D RP Patents 99 found 73 patents that matched.

3. If you search for "sterolithography AND curl and reduction" on the IBM
site, you will find 0 patents that match.
The same search with 3D RP Patents 99 found 69 patents that match.

The reason for the significant difference is that the IBM site does not
perform a full text search, whereas 3D RP Patents does.


The IBM site is a convenient way to access some of the patents that you are
searching for, but the above examples show that its performance for finding
patents that meet your search criteria are most likely very deficient.

Chatham Research

Date: Tuesday, 26-Jan-99 09:51 AM

From: santillan@ciateq.mx (Unlisted Name) \ Internet: (santillan@ciateq.mx)
To: RP MAIL LIST \ Internet: (rp-ml@bart.lpt.fi)

Subject: Patents FREE site

Hii listers

To all of you interested in Patents info, there is a site that you may know
or at least the most of you.
in this site you can have a look or copy to your hard drive the most of the US
patents on RP and other fields. the address is

 < http://www.patents.ibm.com/ >
All you have to do is to use Key words for you patent at the top window or
use the "bolean text" with your key words using bolan restricters.

This site belongs to IBM and you can get the most of the patents FREE, of
course some times the resolution of the scanned patent is not the best but is
legible any way or it does not include all the drawings, however if you want
the orginal document because it is not complete, you can as well order on
line. I have not needed yet but you may.

The best way to download the patent is, once you find your patente and
display on the screen "page by page", press the right button of the mouse on
each page and select "copy as" where you will be able to save the image as
GIF or BMP, I suggest GIF leater you better open it with any "paint" or
"photo" edit software to print it. TIP. I usully create a directory with their
respective number for each patent and place in there all the GIF image that
belong to that patent.

good lock

** Rafael Santillan, Ph.D. Mech. Eng. Office Phone: 52-42-112623 **
** Analysis and Numerical Simulation Fax: 52-42-169963 **
** Proc. Energ. **
** **
** Centro de Investigacion y Asistencia **
** Tecnica de Queretaro ( CIATEQ ) **
** <http://ciateq.mx/> **
** **
** Address: Calzada Retablo 150 Email: santillan@ciateq.mx **
** Queretaro,Qro. / MEXICO ZIP 76150 **

For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/

For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/

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