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USPTO Patent Rankings Data through Dec 31, 2025
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Mark K. Barr — 13 Patents

AMAmoco: 8 patents #89 of 1,251Top 8%
SPScm Metal Products: 2 patents #6 of 23Top 30%
BABp Amoco: 1 patents #58 of 196Top 30%
GE: 1 patents #19,940 of 36,430Top 55%
Wheaton, IL: #67 of 884 inventorsTop 8%
Illinois: #6,713 of 84,256 inventorsTop 8%
Overall (All Time): #362,438 of 4,157,543Top 9%
13 Patents All Time
Mark K. Barr has been granted 13 US patents while listed as an inventor at Amoco. The first was granted in 1991 and the most recent in January 2008. Mark K. Barr ranks #362,438 of 4,157,543 US inventors in our database (top 8.7%). Patent records list Mark K. Barr in Wheaton, IL, US.

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7323583 Catalysts for the production of methylchlorosilanes using zinc oxide promoters Thomas Murphy, Michael G. Williams 2008-01-29
7205258 Catalysts for the production of methylchlorosilanes using zinc oxide promoters Thomas Murphy, Michael G. Williams 2007-04-17
5916129 Control of exhaust emissions from an internal combustion engine Frank S. Modica, George A. Huff, Jr., Roger H. Cayton, Bruce D. Alexander, Richard A. Kretchmer 1999-06-29 $200,566,000
5876609 Process for treating methylchlorosilanes by-products Michael White, Sunita Singh Baghel, Luisito A. Tolentino, David Cheney deMoulpied, William L. Gately +6 more 1999-03-02 $118,228,000
5811313 Identification test for highly refined sesame oil 1998-09-22 $8,139,000
5687565 Control of exhaust emissions from an internal combustion engine Frank S. Modica, George A. Huff, Jr., Roger H. Cayton, Bruce D. Alexander, Richard A. Kretchmer 1997-11-18 $54,710,000
5328883 Hydrocarbon conversion Don M. Washecheck, George A. Huff, Jr., Mark P. Kaminsky, Mark S. Kleefisch, Victor K. Shum 1994-07-12 $33,291,000
5316995 Hydrocarbon conversion catalyst Mark P. Kaminsky, Mark S. Kleefisch, George A. Huff, Jr., Don M. Washecheck 1994-05-31 $32,545,000
5312795 Hydrocarbon conversion Mark P. Kaminsky, Mark S. Kleefisch, George A. Huff, Jr., Don M. Washecheck 1994-05-17 $61,157,000
5245109 Hydrocarbon conversion Mark P. Kaminsky, Mark S. Kleefisch, George A. Huff, Jr., Don M. Washecheck 1993-09-14 $35,370,000
5198596 Hydrocarbon conversion Mark P. Kaminsky, Mark S. Kleefisch, George A. Huff, Jr., Don M. Washecheck 1993-03-30 $23,362,000
5196634 Hydrocarbon conversion Don M. Washecheck, George A. Huff, Jr., Mark P. Kaminsky, Mark S. Kleefisch, Victor K. Shum 1993-03-23 $73,119,000
5024984 Catalysts for the oxidative conversion of methane to higher hydrocarbons Mark P. Kaminsky, Mark S. Kleefisch, George A. Huff, Jr., Don M. Washecheck, Aileen E. Alvarado-Swaisgood 1991-06-18 $153,827,000