Darrell Duffy — 12 Patents at Digital Equipment

Darrell Duffy has been granted 12 US patents while listed as an inventor at Digital Equipment. The first was granted in 1989 and the most recent in December 2012. Darrell Duffy ranks #396,045 of 4,157,543 US inventors in our database (top 9.5%). Patent records list Darrell Duffy in Windham, NH, US.

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
8340572	System and method for selecting repeaters	Glen M. Riley	2012-12-25
7796942	System method for selecting repeaters	Glen M. Riley	2010-09-14	$3,599,000
7277672	System and method for selecting repeaters	Glen M. Riley	2007-10-02	$18,481,000
7103016	System and method for providing transaction control on a data network	Glen M. Riley	2006-09-05	$3,606,000
6862430	System and method for selecting repeaters	Glen M. Riley	2005-03-01	$3,284,000
5734659	Computer network having a virtual circuit message carrying a plurality of session messages	Bruce E. Mann, Anthony G. Lauck, William D. Strecker	1998-03-31	$41,022,000
5640506	Integrity protection for parity calculation for raid parity cache	—	1997-06-17	$2,083,000
5621734	Local area network with server and virtual circuits	Bruce E. Mann, Anthony G. Lauck, William D. Strecker	1997-04-15	$15,743,000
5058108	Local area network for digital data processing system	Bruce E. Mann, Anthony G. Lauck, William D. Strecker	1991-10-15	$9,561,000
4975904	Local area network for digital data processing system including timer-regulated message transfer arrangement	Bruce E. Mann, Anthony G. Lauck, William D. Strecker	1990-12-04	$9,900,000
4975905	Message transmission control arrangement for node in local area network	Bruce E. Mann, Anthony G. Lauck, William D. Strecker	1990-12-04	$9,900,000
4823122	Local area network for digital data processing system	Bruce E. Mann	1989-04-18	$20,957,000

Darrell Duffy — 12 Patents

Issued Patents All Time

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