The Duck® Brand clearly understands domain names and owns one of the generic product terms DuckTape.com which also matches there brand name .
The Henkel company which owns the Duck® brand not only uses the "Makes Sense" domain name DuckTape.com, they keep people coming back with a great deal of contests they run on the site often and other network sites that all link back to each other.
They do not only sell "tape", so other domain names are used by the company using it’s brand name Duck®. The main site is DuckProducts.com which ranks #1 on google for the term Duck Tape.
Duck® also ranks several more of it’s sites on P1 on Google.com for the duck tape term.
They rank # 1 & 2 with DuckProducts.com, # 4 with DuckTapeClub.com which is the same site that uses the DuckTape.com domain.
Since it was in question if the term was Duct or Duck tape, the Duck brand uses another domain name DuctTapeGuys.com to explain what they think.
The final Google listing is for StuckAtProm.com which is a contest the Duck brand runs annually and gives the winner a $3K scholarship.
The Duck brand also offers catchy T-shirts, Duck Tape Wallets, Travel Mugs, Hats, Duck tape and more at DuckTapeCentral.com.
The Duck brand also understands Social Media and is linked with Facebook and Twitter @theduckbrand
To cover the whole market, it would be wise for the Duck Brand to purchase "the other term" DuctTape.com if Frank S of Name Administration Inc. would sell.
Borat
The generic term is not “duck tape” although it sounds like it. The term is actually “duct tape” as in air ducts…etc: Duct tape is searched far more frequently than the clever misspelling, and it’s doubtful Frank would sell it for an affordable price to the Duck brand. They’d probably have better luck buying Duck.com.
http://www.google.com/search?hl=en&q=duct+tape&btnG=Google+Search&aq=0&oq=duct+t