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

John Liu — 28 Patents

ALAlcoa: 14 patents #12 of 632Top 2%
AAAluminum Company Of America: 8 patents #55 of 1,017Top 6%
UFUS Air Force: 4 patents #1,666 of 16,312Top 15%
ARArconic: 1 patents #83 of 180Top 50%
Murrysville, PA: #17 of 521 inventorsTop 4%
Pennsylvania: #2,053 of 74,527 inventorsTop 3%
Overall (All Time): #134,628 of 4,157,543Top 4%
28 Patents All Time
John Liu has been granted 28 US patents while listed as an inventor at Alcoa. The first was granted in 1987 and the most recent in October 2019. John Liu ranks #134,628 of 4,157,543 US inventors in our database (top 3.2%). Patent records list John Liu in Murrysville, PA, US.

Issued Patents All Time

Showing 1–25 of 28 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
10450640 Aluminum alloy products having improved property combinations and method for artificially aging same Dhruba J. Chakrabarti, Jay Goodman, Gregory B. Venema, Ralph R. Sawtell, Cynthia M. Krist +1 more 2019-10-22
9297394 Metal sheets and plates having friction-reducing textured surfaces and methods of manufacturing same Ming Li, James M. Marinelli, Jiantao Liu, Paul E. Magnusen, Simon Sheu +2 more 2016-03-29 $60,793,000
8756815 Methods of structural health monitoring using metal bodies containing microcavities Hasso Weiland, Markus B. Heinimann, Robert C. Pahl, Achim Hofmann 2014-06-24 $55,223,000
8578747 Metal sheets and plates having friction-reducing textured surfaces and methods of manufacturing same Ming Li, James M. Marinelli, Jiantao Liu, Paul E. Magnusen, Simon Sheu +2 more 2013-11-12 $45,298,000
8524014 Aluminum alloy products having improved property combinations and method for artificially aging same Dhruba J. Chakrabarti, Jay Goodman, Gregory B. Venema, Ralph R. Sawtell, Cynthia M. Krist +1 more 2013-09-03 $35,428,000
8444092 Metal sheets and plates having friction-reducing textured surfaces and methods of manufacturing same Ming Li, James M. Marinelli, Jiantao Liu, Paul E. Magnusen, Simon Sheu +2 more 2013-05-21 $38,160,000
8298682 Metal bodies containing microcavities and apparatus and methods relating thereto Hasso Weiland, Markus B. Heinimann, Robert C. Pahl, Achim Hofmann 2012-10-30
8083870 Aluminum alloy products having improved property combinations and method for artificially aging same Dhruba J. Chakrabarti, Jay Goodman, Gregory B. Venema, Ralph R. Sawtell, Cynthia M. Krist +1 more 2011-12-27 $51,756,000
7678205 Aluminum alloy products having improved property combinations and method for artificially aging same Dhruba J. Chakrabarti, Jay Goodman, Gregory B. Venema, Ralph R. Sawtell, Cynthia M. Krist +1 more 2010-03-16 $167,703,000
7097719 Aluminum alloy product having improved combinations of properties Gary H. Bray, Lynn Oswald 2006-08-29 $126,199,000
6972110 Aluminum alloy products having improved property combinations and method for artificially aging same Dhruba J. Chakrabarti, Jay Goodman, Gregory B. Venema, Ralph R. Sawtell, Cynthia M. Krist +1 more 2005-12-06 $54,546,000
6918975 Aluminum alloy extrusions having a substantially unrecrystallized structure Gary H. Bray, David A. Lukasak, Robert C. Pahl 2005-07-19 $60,073,000
6576071 High toughness plate alloy for aerospace applications Robert W. Westerlund, Gary H. Bray, Terrence N. Thom, Dhruba J. Chakrabarti 2003-06-10 $157,255,000
6444058 High toughness plate alloy for aerospace applications Robert W. Westerlund, Gary H. Bray, Terrence N. Thom, Dhruba J. Chakrabarti 2002-09-03 $128,327,000
6411105 Nondestructive detection of steel surface corrosion 2002-06-25
6325869 Aluminum alloy extrusions having a substantially unrecrystallized structure Gary H. Bray, David A. Lukasak, Robert C. Pahl 2001-12-04 $273,335,000
6172510 System for detection of flaws by use of microwave radiation 2001-01-09
RE36979 Surface conforming flexible eddy current probe for scanning varying surface contours Susan N. Vernon 2000-12-05
5865911 Aluminum alloy products suited for commercial jet aircraft wing members Shelly M. Miyasato, Gary H. Bray, James T. Staley 1999-02-02 $24,200,000
5865914 Method for making an aerospace structural member Lynette M. Karabin, Allison S. Warren, Gary H. Bray 1999-02-02 $24,200,000
5863359 Aluminum alloy products suited for commercial jet aircraft wing members Lynette M. Karabin, Allison S. Warren, Gary H. Bray 1999-01-26 $105,620,000
5859535 System for determining size and location of defects in material by use of microwave radiation 1999-01-12
5278498 Surface conforming flexible eddy current probe for scanning varying surface contours Susan N. Vernon 1994-01-11
5192378 Aluminum alloy sheet for food and beverage containers Roger D. Doherty, Robert E. Sanders, Jr. 1993-03-09 $16,107,000
5108520 Heat treatment of precipitation hardening alloys Michael M. Kersker 1992-04-28 $14,521,000