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vcf
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Parkchemiker



Joined: Mar 20, 2012
Posts: 2
Location: Berlin

PostPosted: Tue Mar 20, 2012 5:15 am    Post subject: vcf
Subject description: voltage controlled lowpass filter
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Hello,

i had have an idea for a new 24db/Oct. - voltage controlled lowpass filter working with diodes.

Schemos and sounds are to find here: http://www.diodenfilter.de

For Germany i have commercial rights for this filter, but anyone may build this filter to check it out and the utility patent is only valid for Germany.


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Thomas Strauß · 10407 Berlin · diodenfilter@gmx.de

Last edited by Parkchemiker on Mon Jan 27, 2014 5:19 am; edited 10 times in total
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sneakthief



Joined: Jul 24, 2006
Posts: 531
Location: Berlin

PostPosted: Tue Mar 20, 2012 6:39 am    Post subject: Reply with quote  Mark this post and the followings unread

When you speak of commercial rights, do you mean that you copyrighted the circuit schematic in Germany? Or do you mean the PCB artwork?
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Sneak-Thief - raw electrofunk
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Parkchemiker



Joined: Mar 20, 2012
Posts: 2
Location: Berlin

PostPosted: Wed Mar 21, 2012 5:04 am    Post subject: 24db diode-cascode-filter Reply with quote  Mark this post and the followings unread

Hello Sneak-Thief,

I have copyrighted the circuit idea in form of an utility patent - ="Gebrauchsmuster" in Germany (i am German).

This is valid in Germany, not in USA and other countries.

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Thomas Strauß · 10407 Berlin · diodenfilter@gmx.de
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