Pwdr
commented
11 years ago As the Pwdr machine is only a (non-commercial) design for a powder based 3D printer, it's not limited by any patent, as long as there is no commercial activity. The machine is aimed for research purposes.
And as a home builder, there is no concern at all. Drop a line here if you have any other question.
On Tuesday, January 8, 2013 at 15:53 , Kirais wrote:
Is Pwdr going to have any legal issue with the 3DP and SLS patents? I found the patent of 3DP on Google Patent. There are many versions of it. This may be earliest one http://www.google.com/patents/US5204055?dq=three-dimensional+printing+techniques&ei=8SfsUNOFJMf_rAf_yoHAAg&cl=en with filing date of Dec 8, 1989. The lastest one may be this: http://www.google.com/patents/US5340656?dq=three-dimensional+printing+techniques&ei=8SfsUNOFJMf_rAf_yoHAAg&cl=en with filing date of Apr 9, 1993.
I am not very familiar with intellectual property laws. Which one should be used to for expiration date calculation? If we refer to the former one, the patent is already expired, but the latter is still valid for another three months.
In addition, Zcorp also has many patents related to 3DP after the original MIT patent. https://www.google.com/search?tbo=p&tbm=pts&hl=en&q=inassignee:%22Z+Corporation%22 I am not sure whether those patents cover what we are doing in this project. Hope my concerns are not issues. I am really excited about this project, and planning build one myself.— Reply to this email directly or view it on GitHub (https://github.com/Pwdr/Pwdr-Model-0.1/issues/9).
Kirais
digitalw00t
digitalgods
Is Pwdr going to have any legal issue with the 3DP and SLS patents?
I found the patent of 3DP on Google Patent. There are many versions of it. This may be earliest one http://www.google.com/patents/US5204055?dq=three-dimensional+printing+techniques&ei=8SfsUNOFJMf_rAf_yoHAAg&cl=en with filing date of Dec 8, 1989. The lastest one may be this: http://www.google.com/patents/US5340656?dq=three-dimensional+printing+techniques&ei=8SfsUNOFJMf_rAf_yoHAAg&cl=en with filing date of Apr 9, 1993.
I am not very familiar with intellectual property laws. Which one should be used to for expiration date calculation? If we refer to the former one, the patent is already expired, but the latter is still valid for another three months.
In addition, Zcorp also has many patents related to 3DP after the original MIT patent. https://www.google.com/search?tbo=p&tbm=pts&hl=en&q=inassignee:%22Z+Corporation%22 I am not sure whether those patents cover what we are doing in this project.
Hope my concerns are not issues. I am really excited about this project, and planning build one myself.