Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
MK

Mark S. Kleefisch — 30 Patents

AMAmoco: 21 patents #8 of 1,251Top 1%
BABp Amoco: 4 patents #13 of 196Top 7%
GIGas Technology Institute: 3 patents #51 of 262Top 20%
BABp Corporation North America: 1 patents #351 of 812Top 45%
UEUS Dept of Energy: 1 patents #1,355 of 5,099Top 30%
HSHalliburton Energy Services: 1 patents #3,506 of 5,294Top 70%
Plainfield, IL: #11 of 459 inventorsTop 3%
Illinois: #2,039 of 84,256 inventorsTop 3%
Overall (All Time): #121,623 of 4,157,543Top 3%
30 Patents All Time
Mark S. Kleefisch has been granted 30 US patents while listed as an inventor at Amoco. The first was granted in 1990 and the most recent in May 2015. Mark S. Kleefisch ranks #121,623 of 4,157,543 US inventors in our database (top 2.9%). Patent records list Mark S. Kleefisch in Plainfield, IL, US.

Issued Patents All Time

Showing 1–25 of 30 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9022115 Method and apparatus for wellbore perforation Colin John Hawthorn, Henry David Reynolds, Neal G. Skinner, Jim B. Surjaatmadja, Roger L. Schultz +1 more 2015-05-05 $37,467,000
8967298 Transmission of light through light absorbing medium Hamid A. Abbasi, Colin John Hawthorn 2015-03-03
8807218 Telescopic laser purge nozzle Iraj Salehi 2014-08-19
6293978 Process for converting organic compounds using composite materials in membrane reactors Carl A. Udovich, Joseph G. Masin, Thaddeus P. Kobylinski 2001-09-25
6200541 Composite materials for membrane reactors Carl A. Udovich, Joseph G. Masin, Thaddeus P. Kobylinski 2001-03-13 $312,185,000
5980840 Autothermic reactor and process using oxygen ion--conducting dense ceramic membrane Carl A. Udovich, Alakananda Bhattacharyya, Thaddeus P. Kobylinski 1999-11-09 $354,845,000
5939353 Method for preparing and using nickel catalysts Alakananda Bhattacharyya, Wen-Dong Chang, Carl A. Udovich 1999-08-17 $215,382,000
5935533 Membrane reactor hollow tube module with ceramic/metal interfacial zone Carl A. Udovich, Joseph G. Masin, Thaddeus P. Kobylinski 1999-08-10 $323,837,000
5767040 Catalyst prepared from nickel-containing hydrotalcite-like precursor compound Alakananda Bhattacharyya, Wen-Dong Chang, Carl A. Udovich 1998-06-16 $193,292,000
5723074 Oxygen ion-conducting dense ceramic Uthamalingam Balachandran, Thaddeus P. Kobylinski, Sherry L. Morissette, Shiyou Pei 1998-03-03 $33,193,000
5653774 Method for preparing synthesis gas using nickel catalysts Alakananda Bhattacharyya, Wen-Dong Chang, Carl A. Udovich 1997-08-05 $56,958,000
5639437 Oxygen ion-conducting dense ceramic Uthamalingam Balachandran, Thaddeus P. Kobylinski, Sherry L. Morissette, Shiyou Pei 1997-06-17 $75,974,000
5614163 Catalyzed vapor phase process for making synthesis gas Alakananda Bhattacharyya, Carl A. Udovich 1997-03-25 $79,936,000
5591238 Method for preparing synthesis gas using nickel catalysts Alakananda Bhattacharyya, Wen-Dong Chang, Carl A. Udovich 1997-01-07 $38,435,000
5580497 Oxygen ion-conducting dense ceramic Uthamalingam Balachandran, Thaddeus P. Kobylinski, Sherry L. Morissette, Shiyou Pei 1996-12-03 $72,614,000
5573737 Functionally gradient material for membrane reactors to convert methane gas into value-added products Uthamalingam Balachandran, Joseph T. Dusek, Thadeus P. Kobylinski 1996-11-12
5439861 Catalyzed vapor phase process for making synthesis gas Alakananda Bhattacharyya, Carl A. Udovich 1995-08-08 $29,691,000
5399537 Method for preparing synthesis gas using nickel catalysts Alakananda Bhattacharyya, Wen-Dong Chang, Carl A. Udovich 1995-03-21 $108,622,000
5356728 Cross-flow electrochemical reactor cells, cross-flow reactors, and use of cross-flow reactors for oxidation reactions Uthamalingam Balachandran, Roger B. Poeppel, Thaddeus P. Kobylinski, Carl A. Udovich 1994-10-18 $120,426,000
5328883 Hydrocarbon conversion Don M. Washecheck, Mark K. Barr, George A. Huff, Jr., Mark P. Kaminsky, Victor K. Shum 1994-07-12 $33,291,000
5324702 Catalytic oxidation and oxidative dehydrogenation using metal-compound-loaded, deboronated hams-1b crystalline borosilicate molecular sieve compositions Jin-Su Yoo, John A. Donohue 1994-06-28 $31,033,000
5316995 Hydrocarbon conversion catalyst Mark P. Kaminsky, George A. Huff, Jr., Don M. Washecheck, Mark K. Barr 1994-05-31 $32,545,000
5312795 Hydrocarbon conversion Mark P. Kaminsky, George A. Huff, Jr., Don M. Washecheck, Mark K. Barr 1994-05-17 $61,157,000
5245109 Hydrocarbon conversion Mark P. Kaminsky, George A. Huff, Jr., Don M. Washecheck, Mark K. Barr 1993-09-14 $35,370,000
5198596 Hydrocarbon conversion Mark P. Kaminsky, George A. Huff, Jr., Don M. Washecheck, Mark K. Barr 1993-03-30 $23,362,000