Warren W. Opheim has been granted 4 US patents while listed as an inventor at Imation . The first was granted in 1996 and the most recent in April 2001. Warren W. Opheim ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Warren W. Opheim in Prior Lake, MN, US.
Patents per Year Patents granted per year, 1996 to 2001 Bar chart with a peak of 1 patents in 1996. peak 1 1996: 1 patents 1996 1998: 1 patents 1998 2000: 1 patents 2000 2001: 1 patents 2001
Issued Patents All Time
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Showing 1–4 of 4 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
6220539 Drive for handling multiple size information storage media cartridges and cartridges therefor James S. Anderson , Sten R. Gerfast , Robert W. Tapani , Hung T. Tran 2001-04-24
$5,563,000
6079653 Drive for handling multiple size information storage media cartridges and cartridges therefor James S. Anderson , Sten R. Gerfast , Robert W. Tapani , Hung T. Tran 2000-06-27
$10,695,000
5779172 Drive for handling multiple size information storage media cartridges and cartridges therefor James S. Anderson , Sten R. Gerfast , Robert W. Tapani , Hung T. Tran 1998-07-14
$2,082,000
5558291 Drive for handling multiple size information storage media cartridges and cartridges therefor James S. Anderson , Sten R. Gerfast , Robert W. Tapani , Hung T. Tran 1996-09-24
$8,857,000