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

John C. Middleton — 26 Patents

DUDurect: 13 patents #8 of 96Top 9%
TTTolmar Therapeutics: 6 patents #4 of 21Top 20%
TOTolmar: 2 patents #1 of 10Top 10%
TLTolmar International Limited: 2 patents #6 of 8Top 75%
SBSouthern Biosystems: 1 patents #4 of 8Top 50%
Fort Collins, CO: #143 of 3,421 inventorsTop 5%
Colorado: #1,349 of 40,980 inventorsTop 4%
Overall (All Time): #150,017 of 4,157,543Top 4%
26 Patents All Time
John C. Middleton has been granted 26 US patents while listed as an inventor at Durect. The first was granted in 2002 and the most recent in October 2025. John C. Middleton ranks #150,017 of 4,157,543 US inventors in our database (top 3.6%). Patent records list John C. Middleton in Fort Collins, CO, US.

Patents per Year

Patents granted per year, 2002 to 2023Bar chart with a peak of 4 patents in 2012.peak 42002: 1 patents20022010: 1 patents2012: 4 patents20122013: 2 patents2015: 4 patents20152016: 2 patents2017: 2 patents20172018: 2 patents2019: 1 patents20192020: 2 patents2021: 1 patents20212023: 2 patents2023

Issued Patents All Time

Showing 1–25 of 26 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12453754 Leuprolide acetate compositions and methods of using the same to treat breast cancer Avinash Nangia, John A. McLane, Terrance Marshall Morton 2025-10-28
12447158 Liquid polymer delivery system for extended administration of drugs John Milton Downing, Vishwas Saxena 2025-10-21
11779589 Liquid polymer delivery system for extended administration of drugs John Milton Downing, Vipin Saxena 2023-10-10
11717572 Low-burst polymers and methods to produce polymer Eric Dadey, Richard L. Norton 2023-08-08
11147880 Low-burst polymers and methods to produce polymer Eric Dadey, Richard L. Norton 2021-10-19
10786515 Liquid polymer delivery system for extended administration of drugs John Milton Downing, Vipin Saxena 2020-09-29
10556999 Purification and decolorization of polymers Justin Drew Searcy, George Sal Lewis 2020-02-11
10206970 Low-burst polymers and methods to produce polymer Eric Dadey, Richard L. Norton 2019-02-19
9974824 Low-burst polymers and methods to produce polymer Eric Dadey, Richard L. Norton 2018-05-22
9918982 Oral drug delivery system Su Il Yum, Grant Schoenhard, Arthur J. Tipton, John W. Gibson, Roger Fu +1 more 2018-03-20 $7,113,000
9655970 Low-burst polymers and methods to produce polymers Eric Dadey, Richard L. Norton 2017-05-23
9561282 Low-burst polymers and methods to produce polymer Eric Dadey, Richard L. Norton 2017-02-07
9517271 Oral drug delivery system Su Il Yum, Grant Schoenhard, Arthur J. Tipton, John W. Gibson, Roger Fu +1 more 2016-12-13 $2,687,000
9233160 Oral drug delivery system Su Il Yum, Grant Schoenhard, Arthur J. Tipton, John W. Gibson, Roger Fu +1 more 2016-01-12 $2,699,000
9187593 Low burst polymers and methods to produce polymer Eric Dadey, Richard L. Norton 2015-11-17
8974821 Oral drug delivery system Su Il Yum, Grant Schoenhard, Arthur J. Tipton, John W. Gibson, Roger Fu +1 more 2015-03-10 $3,249,000
8951556 Oral drug delivery system Su Il Yum, Grant Schoenhard, Arthur J. Tipton, John W. Gibson, Roger Fu +1 more 2015-02-10 $1,811,000
8945614 Oral drug delivery system Su Il Yum, Grant Schoenhard, Arthur J. Tipton, John W. Gibson, Roger Fu +1 more 2015-02-03 $1,854,000
8420120 Oral drug delivery system Su Il Yum, Grant Schoenhard, Arthur J. Tipton, John W. Gibson 2013-04-16 $2,259,000
8354124 Oral drug delivery system Su Il Yum, Grant Schoenhard, Arthur J. Tipton, John W. Gibson 2013-01-15 $1,617,000
8168217 Oral drug delivery system Su Il Yum, Grant Schoenhard, Arthur J. Tipton, John W. Gibson 2012-05-01 $1,189,000
8153152 Oral drug delivery system Su Il Yum, Grant Schoenhard, Arthur J. Tipton, John W. Gibson 2012-04-10 $399,000
8147870 Oral drug delivery system Su Il Yum, Grant Schoenhard, Arthur J. Tipton, John W. Gibson 2012-04-03 $1,310,000
8133507 Oral drug delivery system Su Il Yum, Grant Schoenhard, Arthur J. Tipton, John W. Gibson 2012-03-13 $1,276,000
7833543 High viscosity liquid controlled delivery system and medical or surgical device John W. Gibson, Stacey S. Miller, Arthur J. Tipton 2010-11-16 $2,858,000