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USPTO Patent Rankings Data through Dec 31, 2025
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Duane E. Bartak — 4 Patents

TATechnology Applications: 4 patents #1 of 13Top 8%
Mayville, ND: #39 of 197 inventorsTop 20%
North Dakota: #462 of 2,395 inventorsTop 20%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Duane E. Bartak has been granted 4 US patents while listed as an inventor at Technology Applications. The first was granted in 1993 and the most recent in November 1995. Duane E. Bartak ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Duane E. Bartak in Mayville, ND, US.

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5470664 Hard anodic coating for magnesium alloys Brian E. Lemieux, Earl R. Woolsey 1995-11-28
5266412 Coated magnesium alloys Brian E. Lemieux, Earl R. Woolsey 1993-11-30
5264113 Two-step electrochemical process for coating magnesium alloys Brian E. Lemieux, Earl R. Woolsey 1993-11-23
5240589 Two-step chemical/electrochemical process for coating magnesium alloys Brian E. Lemieux, Earl R. Woolsey 1993-08-31