Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Mitchell D. Refvik — 37 Patents

Chevron: 33 patents #86 of 4,788Top 2%
PPPhillips Petroleum: 2 patents #1,185 of 2,260Top 55%
AGAgrium: 1 patents #10 of 17Top 60%
Bartlesville, OK: #39 of 1,143 inventorsTop 4%
Oklahoma: #150 of 12,736 inventorsTop 2%
Overall (All Time): #88,321 of 4,157,543Top 3%
37 Patents All Time
Mitchell D. Refvik has been granted 37 US patents while listed as an inventor at Chevron. The first was granted in 2001 and the most recent in July 2024. Mitchell D. Refvik ranks #88,321 of 4,157,543 US inventors in our database (top 2.1%). Patent records list Mitchell D. Refvik in Bartlesville, OK, US.

Issued Patents All Time

Showing 1–25 of 37 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12036542 Hydrocyclone modification of catalyst system components for use in olefin polymerization Carlos A. Cruz, Max P. McDaniel, Mark Scott 2024-07-16
11801502 Hydrocyclone modification of catalyst system components for use in olefin polymerization Mark Scott, Evan Merk, Carlos A. Cruz, Max P. McDaniel 2023-10-31
11583840 Methods of preparing a catalyst utilizing hydrated reagents Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mark L. Hlavinka 2023-02-21
11583841 Methods of preparing a catalyst utilizing hydrated reagents Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mark L. Hlavinka 2023-02-21
11358131 Methods of preparing a catalyst utilizing hydrated reagents Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mark L. Hlavinka 2022-06-14
11358132 Methods of preparing a catalyst utilizing hydrated reagents Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mark L. Hlavinka 2022-06-14
11117122 Methods of preparing a catalyst utilizing hydrated reagents Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mark L. Hlavinka 2021-09-14
11110443 Methods of preparing a catalyst utilizing hydrated reagents Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mark L. Hlavinka 2021-09-07
10894250 Methods of preparing a catalyst utilizing hydrated reagents Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mark L. Hlavinka 2021-01-19
10894249 Methods of preparing a catalyst utilizing hydrated reagents Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mark L. Hlavinka 2021-01-19
10821428 Methods of preparing a catalyst utilizing hydrated reagents Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mark L. Hlavinka 2020-11-03
10773958 Processes for removing polysulfanes and elemental sulfur from hydrogen sulfide Daniel M. Hasenberg, Michael S. Matson, Maruti Bhandarkar, Ronald D. Knudsen 2020-09-15
10722874 Methods of preparing a catalyst utilizing hydrated reagents Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mark L. Hlavinka 2020-07-28
10543480 Methods of preparing a catalyst utilizing hydrated reagents Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mark L. Hlavinka 2020-01-28
10513492 Process for conversion of dimethyl sulfide to methyl mercaptan Reza Khankal, Henry Hwu, Daniel M. Hasenberg, Christina M. Barry, Michael S. Hankinson 2019-12-24
10273204 Process for conversion of dimethyl sulfide to methyl mercaptan Reza Khankal, Henry Hwu, Daniel M. Hasenberg, Christina M. Barry, Michael S. Hankinson 2019-04-30
9340716 Methods of mercaptanizing olefinic hydrocarbons and compositions produced therefrom Michael S. Matson, Colin Cameron, Alastair Robert Marrion, Anthony Colin Wright, Eric J. Netemeyer 2016-05-17
9340717 Methods of mercaptanizing olefinic hydrocarbons and compositions produced therefrom Michael S. Matson, Colin Cameron, Alastair Robert Marrion, Anthony Colin Wright, Eric J. Netemeyer 2016-05-17
9340715 Methods of mercaptanizing olefinic hydrocarbons and compositions produced therefrom Michael S. Matson, Colin Cameron, Alastair Robert Marrion, Anthony Colin Wright, Eric J. Netemeyer 2016-05-17
9133370 Methods of mercaptanizing olefinic hydrocarbons and compositions produced therefrom Michael S. Matson, Colin Cameron, Alastair Robert Marrion, Anthony Colin Wright, Eric J. Netemeyer 2015-09-15
8461293 Methods of mercaptanizing olefinic hydrocarbons and compositions produced therefrom Michael S. Matson, Eric J. Netemeyer, Colin Cameron, Alastair Robert Marrion, Anthony Colin Wright 2013-06-11
8003748 Polythiourethane compositions and processes for making and using same Jim D. Byers, Chad Brown, Michael S. Matson, Michael S. Hankinson 2011-08-23
7989655 Thiol ester compositions and processes for making and using same Daniel M. Hasenberg, Michael S. Hankinson, Michael S. Matson, Dale M. Solaas, Steven J. Herron +1 more 2011-08-02
7910666 Mercaptan-hardened epoxy polymer compositions and processes for making and using same Jim D. Byers, Chad E. Brown, Michael S. Matson 2011-03-22
7781484 Thiol ester compositions and processes for making and using same Jim D. Byers, Chad Brown 2010-08-24