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USPTO Patent Rankings Data through Dec 31, 2025
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Mary E. Burkhardt — 1 Patent

KPKeycom Electronic Publishing: 1 patents #6 of 13Top 50%
Hoffman Estates, IL: #433 of 707 inventorsTop 65%
Illinois: #49,230 of 84,256 inventorsTop 60%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
Mary E. Burkhardt has been granted 1 US patent while listed as an inventor at Keycom Electronic Publishing. All of these patents were granted in 1989. Mary E. Burkhardt ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Mary E. Burkhardt in Hoffman Estates, IL, US.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4814972 Method and videotex apparatus for fast access of remotely located information Peter M. Winter, Thomas R. Ray 1989-03-21