Homebrew PCBs

>Markus Zingg wrote:
>> On Sun, 08 Jun 2003 09:29:09 +1000, you wrote:
>> 
>>>http://nr.stic.gov.tw/ejournal/ProceedingA/v23n3/365-368.pdf
>> 
>> Very intresting article! Too bad it's quite short on the methods. The
>> palladium as well as the pre dip bath smell like vanilla - so I FIGURE
>> my solution uses the Palladium method which mentiones vanilla...
>> 
>
>That's interesting. I remember Tom once telling us how he 
>knew a guy who patented a palladium system, and the magic 
>ingredient was vanilla extract , vanillin. I've just 
>searched the Homebrew_PCBs archives, and found the article 
>posted by Tom.
>
>http://groups.yahoo.com/group/Homebrew_PCBs/message/1108
>
>Curiosity got the better of me, and I also went searching 
>for the actual patent,
>
>US5071517 , see http://patft.uspto.gov/netahtml/srchnum.htm
>
>Adam

Adam

Now that patent IS interesting - wow, I haven't studied closer, but I
got the impression that the information is so precise that it should
be possible to "mix" such a paladium solution - well, chemistry is
close to black art to me and hence it's out of question. The patent
dates back to 1989... How long are patents protected? 20 years or 25
years? Anyways, I figure for personal use mixing this stuff together
should not violate any rights...

Markus