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

Mark T. Devlin — 40 Patents

ACAfton Chemical: 30 patents #3 of 222Top 2%
ETEthyl: 5 patents #112 of 494Top 25%
AIAfton Chemical Intangibles: 2 patents #7 of 21Top 35%
DNDsm N.V.: 1 patents #267 of 669Top 40%
Bank of America: 1 patents #2,818 of 5,361Top 55%
Norfolk, VA: #5 of 414 inventorsTop 2%
Virginia: #426 of 34,511 inventorsTop 2%
Overall (All Time): #78,057 of 4,157,543Top 2%
40 Patents All Time
Mark T. Devlin has been granted 40 US patents while listed as an inventor at Afton Chemical. The first was granted in 1995 and the most recent in February 2024. Mark T. Devlin ranks #78,057 of 4,157,543 US inventors in our database (top 1.9%). Patent records list Mark T. Devlin in Norfolk, VA, US.

Issued Patents All Time

Showing 1–25 of 40 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11898119 Lubricating oil compositions with resistance to engine deposit and varnish formation Todd Dvorak, Kenneth Garelick 2024-02-13 $29,403,000
11851628 Lubricating oil composition having resistance to engine deposits Kenneth Garelick, Todd Dvorak 2023-12-26 $26,809,000
11788027 Engine oil formulation with improved sequence VIII performance Todd Dvorak, Kenneth Garelick 2023-10-17 $10,599,000
11773343 Engine oil formulation with improved Sequence VIII performance Kenneth Garelick, Todd Dvorak 2023-10-03 $23,050,000
11753599 Lubricating compositions for a hybrid engine Huifang Shao, Paul Ransom, Guillaume Carpentier 2023-09-12 $21,201,000
9701921 Lubricant additives and lubricant compositions having improved frictional characteristics Carl W. Bennett 2017-07-11 $17,974,000
9677026 Lubricant additives and lubricant compositions having improved frictional characteristics Carl W. Bennett 2017-06-13 $9,599,000
9657252 Lubricant additives and lubricant compositions having improved frictional characteristics Carl W. Bennett 2017-05-23 $19,706,000
8962539 Friction modifiers for slideway applications Helen T. Ryan, Katie A. Hudson 2015-02-24 $9,166,000
8741821 Nanoparticle additives and lubricant formulations containing the nanoparticle additives Tze-Chi Jao, Allen A. Aradi 2014-06-03 $18,651,000
8709985 Lubricant composition John T. Loper, Roger M. Sheets, Todd Dvorak 2014-04-29 $9,729,000
8400030 Hybrid electric transmission fluid Hong Tang, Naresh C. Mathur, Lee D. Saathoff, Timothy J. Henly 2013-03-19 $24,360,000
8278254 Additives and lubricant formulations having improved antiwear properties Kenneth Garelick, Naresh C. Mathur, Jeffrey M. Guevremont 2012-10-02 $21,855,000
8211840 Additives and lubricant formulations for improved antiwear properties John T. Loper, Roger M. Sheets, Gregory H. Guinther, Jeffrey M. Guevremont 2012-07-03 $20,772,000
8202829 Lubricating composition Randall Baren, Tze-Chi Jao, Samuel Tersigni 2012-06-19 $19,209,000
8003584 Lubricant compositions Tze-Chi Jao, John T. Loper, Helen T. Ryan, Carl K. Esche, Jr. 2011-08-23 $14,459,000
7906465 Lubricant compositions Tze-Chi Jao 2011-03-15 $13,159,000
7902133 Lubricant composition Tze-Chi Jao 2011-03-08 $11,011,000
7897548 Additives and lubricant formulations for improved antiwear properties William Y. Lam 2011-03-01 $3,571,000
7879775 Lubricant compositions Tze-Chi Jao, John T. Loper, Roger M. Sheets, Gregory H. Guinther 2011-02-01 $3,741,000
7867958 Diblock monopolymers as lubricant additives and lubricant formulations containing same Tze-Chi Jao 2011-01-11 $12,831,000
7833952 Lubricant compositions Tze-Chi Jao 2010-11-16 $4,279,000
7833953 Lubricant composition Tze-Chi Jao 2010-11-16 $4,279,000
7767632 Additives and lubricant formulations having improved antiwear properties Carl K. Esche, Jr. 2010-08-03 $5,905,000
7759294 Lubricant compositions Helen T. Ryan 2010-07-20 $12,716,000