[Discuss] 3D printing patents

[Robert Cornell]

On reading the article I assumed it was something novel (with a blade
inside), the patent is wide ranging and not limited to FDM.
The RepRapPro method I linked to would I think be covered.  No detailed
prior art yet, but somewhere.

Best not to create the list on Thingiverse!!! Seriously though, is there a
known database, methodology or best practice for this kind of activity.

Rob
--
openpart.co.uk


On 13 May 2014 18:07, Michael Weinberg <mweinberg at publicknowledge.org>wrote:

> To the extent that versions of this were documented "in the wild, "
> pulling them together would be an incredibly worthwhile activity. If they
> do exist, it would them we worth having a conversation about making sure
> that the patent office also saw them sooner rather than later.
> On May 13, 2014 12:50 PM, "Robert Cornell" <bobnet604 at gmail.com> wrote:
>
>> Hello,
>>
>> RepRapPro have a blog post
>> https://reprappro.com/2014/04/15/multimaterial-research/ and I've been
>> playing with the idea.
>> It's a better method that would make the patent mentioned irrelevant.
>>
>> When Stratasys took over MakerBot and they closed their design there was
>> a lot of discussion about how they cashed out
>> on open source efforts. I suppose something like this was inevitable.
>>
>> I can't recall seeing this exact method before so maybe they did 'invent'
>> it. I'm going to read the patent and dig into the archives.
>>
>> Rob
>> --
>> openpart.co.uk
>>
>>
>>
>>
>> On 13 May 2014 17:28, Matt Maier <blueback09 at gmail.com> wrote:
>>
>>> What do y'all think about this?
>>>
>>> http://3dprint.com/3187/makerbot-3d-printer-invention/
>>>
>>> *"Makerbot has invented a new type of process which, if it works
>>> properly, will allow 3D printers to change build material mid print.  They
>>> have filed a patent to protect this solution over a year and a half ago,
>>> but just recently was it published for the public to see, and 3DPrint.com
>>> has uncovered it."*
>>> *"The multiple materials would be fed into their individual feeds, which
>>> are connected to a filament changer (or build material changer).  The
>>> filament changer would be able to slide the extrusion head from material to
>>> material, in a fluent motion.  It would also consist of a blade or other
>>> cutting edge, that would cut the 1st material before proceeding to the
>>> second"*
>>> *"It covers them for other types of print processes other than FDM, and
>>> also allows for two separate extruders to be alternately positioned along
>>> the tool path for a similar effect..."*
>>>
>>> It seems like this patent is exactly the sort of thing the community has
>>> been discussing. Did Makerbot really invent this, or are they trying to
>>> patent something that the open source community developed first? Is this an
>>> example of the sort of thing we'd want to respond to in a structured way,
>>> like doing the prior art search on behalf of the USPTO and pushing the
>>> results to them?
>>>
>>> _______________________________________________
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>>> discuss at lists.oshwa.org
>>> http://lists.oshwa.org/listinfo/discuss
>>>
>>>
>>
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