Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Douglas C. Williamson — 20 Patents

RGRefocus Group: 14 patents #2 of 15Top 15%
RORefocus Ocular: 6 patents #3 of 14Top 25%
Coppell, TX: #19 of 495 inventorsTop 4%
Texas: #6,926 of 125,132 inventorsTop 6%
Overall (All Time): #214,803 of 4,157,543Top 6%
20 Patents All Time
Douglas C. Williamson has been granted 20 US patents while listed as an inventor at Refocus Group. The first was granted in 2011 and the most recent in March 2022. Douglas C. Williamson ranks #214,803 of 4,157,543 US inventors in our database (top 5.2%). Patent records list Douglas C. Williamson in Coppell, TX, US.

Patents per Year

Patents granted per year, 2011 to 2022Bar chart with a peak of 4 patents in 2014.peak 42011: 2 patents20112012: 1 patents20122013: 2 patents20132014: 4 patents20142016: 4 patents20162017: 4 patents20172019: 2 patents20192022: 1 patents2022

Issued Patents All Time

Showing 1–20 of 20 patents

Patent #TitleCo-InventorsDate
11273028 Scleral prosthesis for treating presbyopia and other eye disorders and related devices and methods Harry R. A. Jacobson, Jack C. Griffis, III, Mark A. Cox, Gene W. Zdenek, Michael K. Smolek +5 more 2022-03-15
10485653 Scleral prosthesis for treating presbyopia and other eye disorders and related devices and methods Harry R. A. Jacobson, Jack C. Griffis, III, Mark A. Cox, Gene W. Zdenek, Peter Richardson +5 more 2019-11-26
10285804 Scleral prosthesis for treating presbyopia and other eye disorders and related devices and methods Harry R. A. Jacobson, Jack C. Griffis, III, Mark A. Cox, Gene W. Zdenek, Peter Richardson +5 more 2019-05-14
9730785 Scleral prosthesis for treating presbyopia and other eye disorders and related devices and methods Harry R. A. Jacobson, Jack C. Griffis, III, Mark A. Cox, Gene W. Zdenek, Peter Richardson +5 more 2017-08-15
9717588 Scleral prosthesis for treating presbyopia and other eye disorders and related devices and methods Harry R. A. Jacobson, Jack C. Griffis, III, Mark A. Cox, Gene W. Zdenek, Peter Richardson +5 more 2017-08-01
9700406 Scleral prosthesis for treating presbyopia and other eye disorders and related devices and methods Harry R. A. Jacobson, Jack C. Griffis, III, Mark A. Cox, Gene W. Zdenek, Peter Richardson +5 more 2017-07-11
9687339 Scleral prosthesis for treating presbyopia and other eye disorders and related devices and methods Harry R. A. Jacobson, Jack C. Griffis, III, Mark A. Cox, Gene W. Zdenek, Peter Richardson +5 more 2017-06-27
9504559 Scleral prosthesis for treating presbyopia and other eye disorders and related devices and methods Harry R. A. Jacobson, Jack C. Griffis, III, Mark A. Cox, Gene W. Zdenek, Peter Richardson +5 more 2016-11-29
9498324 Scleral prosthesis for treating presbyopia and other eye disorders and related devices and methods Harry R. A. Jacobson, Jack C. Griffis, III, Mark A. Cox, Gene W. Zdenek, Peter Richardson +5 more 2016-11-22
9486310 Scleral prosthesis for treating presbyopia and other eye disorders and related devices and methods Harry R. A. Jacobson, Jack C. Griffis, III, Mark A. Cox, Gene W. Zdenek, Peter Richardson +5 more 2016-11-08
9452044 Scleral prosthesis for treating presbyopia and other eye disorders and related devices and methods Harry R. A. Jacobson, Jack C. Griffis, III, Mark A. Cox, Gene W. Zdenek, Peter Richardson +5 more 2016-09-27
8911496 Scleral prosthesis for treating presbyopia and other eye disorders and related devices and methods Harry R. A. Jacobson, Jack C. Griffis, III, Mark A. Cox, Gene W. Zdenek, Peter Richardson +5 more 2014-12-16
8771300 Apparatuses and methods for forming incisions in ocular tissue Rex O. Bare, Andrew J. Scherer, Timothy J. Payne, Mark A. Cox 2014-07-08
8764780 Apparatuses and methods for forming incisions in ocular tissue Mark A. Cox, Andrew J. Scherer, Timothy J. Payne, Rex O. Bare 2014-07-01
8709029 Apparatus and method for securing ocular tissue Jack C. Griffis, III, Mark A. Cox, Gene W. Zdenek, Peter Richardson, Michael K. Smolek +4 more 2014-04-29
8460325 Apparatuses and methods for forming incisions in ocular tissue Mark A. Cox, Jack C. Griffis, III, Gary A. Richardson, Andrew J. Scherer, Timothy J. Payne 2013-06-11
8409277 Scleral prosthesis for treating presbyopia and other eye disorders and related devices and methods Jack C. Griffis, III, Mark A. Cox, Peter Richardson, Michael K. Smolek, Barrie D. Soloway +4 more 2013-04-02
8201942 System and method for identifying a position to insert a scleral prosthesis into an eye Barrie D. Soloway, Gene W. Zdenek, Gary A. Richardson 2012-06-19
8083759 Apparatuses and methods for forming incisions in ocular tissue Mark A. Cox, Jack C. Griffis, III, Gary A. Richardson, Andrew J. Scherer, Timothy J. Payne 2011-12-27
7927372 Scleral prosthesis having crossbars for treating presbyopia and other eye disorders Jack C. Griffis, III, Mark A. Cox, Peter Richardson, Barrie D. Soloway 2011-04-19