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Thread: Physical Modeling a wind instrument

  1. #1
    Junior Member
    Join Date
    Jul 2018

    Physical Modeling a wind instrument

    Hi All, I have been looking at developing a physical model of a wind instrument, and came across this patent. - and it looks to me like it has expired. The actual patent also seems pretty easy to understand, and I think it might be possible to implement in the teensy audio library.
    My question is - If I follow the patent as written, and the patent is expired, can I publish the results?

  2. #2
    Senior Member PaulStoffregen's Avatar
    Join Date
    Nov 2012
    With the caveat that this isn't "legal advice", yes, I believe it's ok to use if the patent has expired.

    If you do publish this and want me to include it in the audio library, please let me know.

  3. #3
    Senior Member+ Theremingenieur's Avatar
    Join Date
    Feb 2014
    Colmar, France
    This patent has "only" expired by lack of payment of the annual fee. Not sure if the intellectual property is now free, too.

  4. #4
    Senior Member PaulStoffregen's Avatar
    Join Date
    Nov 2012
    Says it was granted 22 years ago, in 1996, and filed 24 years ago, on May 10, 1994.

    All the info I can find says the term is 20 years from the filing date. That'd mean it expired in 2014, right? (if it had ever been valid)

  5. #5
    Administrator Robin's Avatar
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    Oct 2012
    PJRC Global Headquarters
    From the US Patent Office

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  6. #6

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