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

Randolph E. Campbell — 41 Patents

FVForsight Vision4: 39 patents #1 of 34Top 3%
ESE.R. Squibb & Sons.: 2 patents #179 of 513Top 35%
Redwood City, CA: #176 of 5,061 inventorsTop 4%
California: #11,075 of 386,348 inventorsTop 3%
Overall (All Time): #75,001 of 4,157,543Top 2%
41 Patents All Time
Randolph E. Campbell has been granted 41 US patents while listed as an inventor at Forsight Vision4. The first was granted in 1984 and the most recent in March 2025. Randolph E. Campbell ranks #75,001 of 4,157,543 US inventors in our database (top 1.8%). Patent records list Randolph E. Campbell in Redwood City, CA, US.

Issued Patents All Time

Showing 1–25 of 41 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12251336 Expandable drug delivery devices and methods of use Bradley G. Bachelder, Darren Doud, Signe Erickson, Kevin W. Sacherman 2025-03-18
12201556 Porous structures for extended release drug delivery devices Kevin W. Sacherman, Kathleen Cogan Farinas, Signe Erickson, Jeremy J. Boyette 2025-01-21
12115102 Ophthalmic implant for delivering therapeutic substances Signe Erickson, Darren Doud 2024-10-15
12102560 Implantable ocular drug delivery devices Kevin W. Sacherman, Bradley G. Bachelder, Signe Erickson, Jeremy J. Boyette 2024-10-01
11786396 Injector apparatus and method for drug delivery Eugene de Juan, Jr., Yair Alster, Kathleen Cogan Farinas, K. Angela Macfarlane, Cary J. Reich +6 more 2023-10-17
11679027 Combined drug delivery methods and apparatus Eugene de Juan, Jr., Yair Alster, Kathleen Cogan Farinas, Cary J. Reich, K. Angela Macfarlane +1 more 2023-06-20
11642310 Posterior segment drug delivery Eugene de Juan, Jr., Yair Alster, Steven M. Chamow, Kathleen Cogan Farinas, Hanson S. Gifford, III +5 more 2023-05-09
11617680 Implantable ocular drug delivery devices Kevin W. Sacherman, Bradley G. Bachelder, Signe Erickson, Jeremy J. Boyette 2023-04-04
11510810 Ophthalmic implant for delivering therapeutic substances Signe Erickson, Darren Doud 2022-11-29
11432959 Porous structures for extended release drug delivery devices Kevin W. Sacherman, Kathleen Cogan Farinas, Signe Erickson, Jeremy J. Boyette 2022-09-06
11419759 Fluid exchange apparatus for expandable port delivery system and methods of use Kevin W. Sacherman, Darren Doud, Kathleen Cogan Farinas 2022-08-23
11110001 Expandable drug delivery devices and methods of use Bradley G. Bachelder, Darren Doud, Signe Erickson, Kevin W. Sacherman 2021-09-07
11065151 Therapeutic agent formulations for implanted devices Eugene de Juan, Jr., Yair Alster, Steven M. Chamow, Kathleen Cogan Farinas, K. Angela Macfarlane +3 more 2021-07-20
10874548 Therapeutic agent formulations for implanted devices Eugene de Juan, Jr., Yair Alster, Steven M. Chamow, Kathleen Cogan Farinas, K. Angela Macfarlane +3 more 2020-12-29
10813788 Implantable therapeutic device Eugene de Juan, Jr., Yair Alster, Kathleen Cogan Farinas, K. Angela Macfarlane, Cary J. Reich 2020-10-27
10656152 Posterior segment drug delivery Eugene de Juan, Jr., Yair Alster, Steven M. Chamow, Kathleen Cogan Farinas, Hanson S. Gifford, III +5 more 2020-05-19
10653554 Fluid exchange apparatus and methods Darren Doud, Signe Erickson, K. Angela Macfarlane, Mike Barrett, Christina Skieller +5 more 2020-05-19
10617557 Combined drug delivery methods and apparatus Eugene de Juan, Jr., Yair Alster, Kathleen Cogan Farinas, Cary J. Reich, K. Angela Macfarlane +1 more 2020-04-14
10603209 Insertion and removal methods and apparatus for therapeutic devices Eugene de Juan, Jr., Signe Erickson, Michael Barrett, Christina Skieller, David Batten +1 more 2020-03-31
10500091 Expandable drug delivery devices and methods of use Bradley G. Bachelder, Darren Doud, Signe Erickson, Kevin W. Sacherman 2019-12-10
10398593 Ophthalmic implant for delivering therapeutic substances Signe Erickson, Darren Doud 2019-09-03
10265215 Injector apparatus and method for drug delivery Eugene de Juan, Jr., Yair Alster, Kathleen Cogan Farinas, K. Angela Macfarlane, Cary J. Reich +6 more 2019-04-23
10166142 Small molecule delivery with implantable therapeutic device Eugene de Juan, Jr., Yair Alster, Kathleen Cogan Farinas, K. Angela Macfarlane, Cary J. Reich +1 more 2019-01-01
10010448 Insertion and removal methods and apparatus for therapeutic devices Eugene de Juan, Jr., Signe Erickson, Mike Barrett, Christina Skieller, David Batten +1 more 2018-07-03
9883968 Fluid exchange apparatus and methods Darren Doud, Signe Erickson, K. Angela Macfarlane, Mike Barrett, Christina Skieller +5 more 2018-02-06