Messages in this thread | | | Subject | Re: Article: IBM wants to "clean up the license" of Linux | Date | Tue, 22 Dec 1998 10:52:33 -0600 (CST) | From | Abhay Kanhere <> |
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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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