Re: Article: IBM wants to "clean up the license" of Linux

Abhay Kanhere (abhay@ece.nwu.edu)
Tue, 22 Dec 1998 10:52:33 -0600 (CST)

According to. David Luyer :
| Abhay wrote:
|
| > Chaitin's reg-alloc algorithm (graph coloring) is patented by IBM 1982
| > search IBM's patent server ...
|
| Well, if that lasts 17 years, it's a real-soon-now thing. :-)

I am sorry about the year. I was mistaken by date of research publication.
The research paper describing this method is dated 1982. But the patent was
filed in nov 1982 and was issued on feb 1986.

[http://www.patents.ibm.com/details?pn=US04571678__&language=en]
US4571678: Register Allocation and spillin via graph coloring.

-Abhay

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