Re: European patents (was Re: Sury)
- To: alt-photo-process-l@usask.ca
- Subject: Re: European patents (was Re: Sury)
- From: Richard Knoppow <dickburk@ix.netcom.com>
- Date: Thu, 03 Jan 2008 02:00:19 -0800
- Comments: "alt-photo-process mailing list"
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- Reply-to: Richard Knoppow <dickburk@ix.netcom.com>
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----- Original Message -----
From: "Alberto Novo" <alt.list@albertonovo.it>
To: <alt-photo-process-l@usask.ca>
Sent: Wednesday, January 02, 2008 11:22 PM
Subject: European patents (was Re: Sury)
I have realized that I replied directly to Richard Knoppow
instead to The List some days ago. So I send this message
again, because this is of general interest and I think that
part of the confusion about the Sury's patents (but this is
seasonabily extended to whosever patents) are arising from
a lack of knowledge on how to perform a patent search.
Alberto
----------
Richard,
Google allows full text and date searches for all patents
where the USPTO site allows them only for patents issued
after 1975.
1870-1975 US patents in USPTO are available as sigle TIF
pages. Very interesting to look at, especially using the
advanced search and narrowing the time period.
I have not found a site for older European, British, or
Japanese patents.
http://gb.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=gb/e
n/advanced.hts (all in a row!)
There you find and download PDFs also for the entire
patent family, that is all the national patents derived
from the first original. It is possible also to view the
forward citations.
However, the search motor must rely on the various
national database update, and thus some old patents may be
still hidden.
Alberto
The US patent office site has change a bit. Formerly it
allowed only patent number searches for patents issued
before 1976. It now allows searches for several catagories
such as the inventor or assignee but still does not allow
full text searches.
I was able to find the Sury patent, I think. Its USP
1,571,103. Rather than get it as a series of TIF files I
downloaded a PDF using the Google Patents site. Those
interested should read the patent. Its short, only about a
page and a quarter. The Sury patent I posted earlier was for
something else and caused some confusion. Sury evidently
worked on multiple printing methods for some time since the
first patent was issued in 1909.
---
Richard Knoppow
Los Angeles, CA, USA
dickburk@ix.netcom.com