TE and DTE Patent Numbers

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crispinat_private

Starting from some helpful clues from Greg KH, I believe that the 
relevant patent for DTE is US 5819275 which you can read here 
<http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/search-bool.html&r=7&f=G&l=50&co1=AND&d=ft00&s1=5819275&OS=5819275&RS=5819275> 
<http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/search-bool.html&r=7&f=G&l=50&co1=AND&d=ft00&s1=5819275&OS=5819275&RS=5819275>

I also believe that the patents relevant to TE and SELinux are here:

    * 4621321
      <http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2Fsearch-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN%2F4621321>
    * 4701840
      <http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2Fsearch-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN%2F4701840>
    * 4713753
      <http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2Fsearch-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN%2F4713753>

The abstracts for the first two are nearly identical, so one is likely a 
refinement on the other. The third patent looks like an application of 
the first two. I would just be speculating as to which of these (or any 
other) patents are covering SELinux.

Crispin

-- 
Crispin Cowan, Ph.D.
Chief Scientist, WireX Communications, Inc. http://wirex.com/~crispin/
Security Hardened Linux Distribution:       http://immunix.org
Available for purchase: http://wirex.com/Products/Immunix/purchase.html

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