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USPTO Patent Rankings Data through Dec 31, 2025
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John E. Pahlman — 10 Patents

ETEnviroscrub Technologies: 5 patents #4 of 10Top 40%
UIUS Dept of the Interior: 3 patents #26 of 508Top 6%
SISecretary Of The Interior: 1 patents #2 of 21Top 10%
Bloomington, MN: #143 of 1,157 inventorsTop 15%
Minnesota: #7,600 of 52,454 inventorsTop 15%
Overall (All Time): #481,000 of 4,157,543Top 15%
10 Patents All Time
John E. Pahlman has been granted 10 US patents while listed as an inventor at Enviroscrub Technologies. The first was granted in 1980 and the most recent in July 2007. John E. Pahlman ranks #481,000 of 4,157,543 US inventors in our database (top 11.6%). Patent records list John E. Pahlman in Bloomington, MN, US.

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
7247279 System for removal of pollutants from a gas stream Ray V. Huff, Charles Hammel, Richard M. Boren, Kevin P. Kronbeck, Joshua Larson +3 more 2007-07-24
7033548 System and process for removal of pollutants from a gas stream Steve Carlton, Ray V. Huff, Charles Hammel, Richard M. Boren, Kevin P. Kronbeck +3 more 2006-04-25
6974565 System and process for removal of pollutants from a gas stream Ray V. Huff, Charles Hammel, Richard M. Boren, Kevin P. Kronbeck, Joshua Larson +3 more 2005-12-13
6610263 System and process for removal of pollutants from a gas stream Steve Carlton, Ray V. Huff, Charles Hammel, Richard M. Boren, Kevin P. Kronbeck +3 more 2003-08-26
6579507 System and process for removal of pollutants from a gas stream Steven C. Carlton, Ray V. Huff, Charles Hammel, Richard M. Boren, Kevin P. Kronbeck +3 more 2003-06-17
5196401 Method of enhancing rock fragmentation and extending drill bit life William H. Engelmann, Pamela J. Watson, Sanaa E. Khalafalla, Patrick A. Tuzinski 1993-03-23
4959164 Rock fragmentation method William H. Engelmann, Pamela J. Watson, Patrick A. Tuzinski, Sanaa E. Khalafalla 1990-09-25
4765415 Isoelectric drilling method Sanaa E. Khalafalla, William H. Engelmann 1988-08-23
4306905 Production of ferrochromium alloys Sanaa E. Khalafalla 1981-12-22
4208379 Recovery of metals from Atlantic sea nodules Sanaa E. Khalafalla 1980-06-17