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

Gregg Feigelson — 31 Patents

Pfizer: 13 patents #344 of 5,153Top 7%
ACAmerican Cyanamid: 11 patents #114 of 1,554Top 8%
Bristol-Myers Squibb: 6 patents #872 of 3,969Top 25%
Chester, NY: #1 of 58 inventorsTop 2%
New York: #3,856 of 115,490 inventorsTop 4%
Overall (All Time): #115,823 of 4,157,543Top 3%
31 Patents All Time
Gregg Feigelson has been granted 31 US patents while listed as an inventor at Pfizer. The first was granted in 1991 and the most recent in May 2023. Gregg Feigelson ranks #115,823 of 4,157,543 US inventors in our database (top 2.8%). Patent records list Gregg Feigelson in Chester, NY, US.

Patents per Year

Patents granted per year, 1991 to 2023Bar chart with a peak of 4 patents in 1997.peak 41991: 1 patents19911993: 1 patents1994: 3 patents19941996: 1 patents1997: 4 patents19971998: 2 patents2004: 3 patents20042006: 3 patents2007: 3 patents20072008: 1 patents2010: 2 patents20102013: 1 patents2015: 1 patents20152016: 1 patents2018: 1 patents20182021: 1 patents2022: 1 patents20222023: 1 patents2023

Issued Patents All Time

Showing 1–25 of 31 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11655257 MK2 inhibitors, synthesis thereof, and intermediates thereto Maryll E. Geherty, Richard M. Heid, Jr., Mohit Atul Kothare, Hon-Wah Man, Alexander L. Ruchelman +3 more 2023-05-23
11312699 Processes for preparing 2-(4-chlorophenyl)-N-((2-(2,6-dioxopiperidin-3-yl)-1-oxoisoindolin-5-yl)methyl)-2,2-difluoroacetamide Marie Georges Beauchamps, Jianxin Han, Joshua Hansen, Mohit Atul Kothare, Michael James Williams +2 more 2022-04-26
10894796 MK2 inhibitors, synthesis thereof, and intermediates thereto Maryll E. Geherty, Richard M. Heid, Jr., Mohit Atul Kothare, Hon-Wah Man, Alexander L. Ruchelman +3 more 2021-01-19
9975872 Processes for the preparation of (s)-3-(4-((4-(morpholinomethyl)benzyl)oxy)-1-oxoisoindolin-2-yl)piperidine-2,6-dione and pharmaceutically acceptable forms thereof John F. Traverse, Chengmin Zhang, Benjamin M. Cohen, William W. Leong 2018-05-22 $110,229,000
9309220 Processes for the preparation of (S)-3-(4- (4-(morpholinomethyl)benzyl)oxy)-1-oxoisoindolin-2-yl)piperidine-2,6-dione and pharmaceutically acceptable forms thereof John F. Traverse, Chengmin Zhang, Benjamin M. Cohen, William W. Leong 2016-04-12 $278,089,000
9133161 Processes for preparing isoindoline-1,3-dione compounds John F. Traverse, Alexander L. Ruchelman, Jihong Liu, Hongfeng Liu, Chengjun Ma +2 more 2015-09-15 $286,222,000
8445496 Crystalline forms of 4-[(2,4-dichloro-5-methoxyphenyl)amino]-6-methoxy-7-[3-(4-methyl-1-piperazinyl)propoxy]-3-quinolinecarbonitrile and methods of preparing the same Marc Sadler Tesconi, Henry L. Strong, Hong Wen 2013-05-21
7767678 Crystalline forms of 4-[(2,4-dichloro-5-methoxyphenyl)amino]-6-methoxy-7-[3-(4-methyl-1-piperazinyl)propoxy]-3-quinolinecarbonitrile and methods of preparing the same Marc Sadler Tesconi, Henry L. Strong, Hong Wen 2010-08-03
7671196 Diazepinoquinolines, synthesis thereof, and intermediates thereto Sreenivasulu Megati, Anita Wai-Yin Chan 2010-03-02
7361773 Preparation of N1-(2'-pyridyl)-1,2-propanediamine sulfamic acid and its use in the synthesis of biologically active piperazines Anita Wai-Yin Chan, Joseph Zeldis, Ivo L. Jirkovsky 2008-04-22 $123,108,000
7297795 Process for preparation of 4-amino-3-quinolinecarbonitriles Karen Sutherland, Diane Boschelli, David Blum, Henry L. Strong 2007-11-20 $36,867,000
7256289 Process for making chiral 1,4-disubstituted piperazines Ivo L. Jirkovsky, Joseph Zeldis 2007-08-14 $69,730,000
7166723 Process for the synthesis of derivatives of 2,3-dihydro-1,4-dioxino-[2,3-f] quinoline Anita Wai-Yin Chan, Timothy T. Curran, Silvio Iera, Warren Chew, John H. Sellstedt +2 more 2007-01-23 $86,239,000
7091349 Process for synthesizing N-aryl piperazines with chiral N′-1-[benzoyl(2-pyridyl)amino]-2-propane substitution Joseph Zeldis, Ivo L. Jirkovsky 2006-08-15 $116,757,000
7038052 Process for the synthesis of derivatives of 2, 3-dihydro-1, 4-dioxino- [2, 3-f] quinoline Anita Wai-Yin Chan, Timothy T. Curran, Silvio Iera, Warren Chew, John H. Sellstedt +2 more 2006-05-02 $123,270,000
7019137 Process for making chiral 1,4-disubstituted piperazines Ivo L. Jirkovsky, Joseph Zeldis 2006-03-28 $49,696,000
6784294 Preparation of N1-(2′-pyridyl)-1,2-propanediamine sulfamic acid and its use in the synthesis of biologically active piperazines Anita Wai-Yin Chan, Joseph Zeldis, Ivo L. Jirkovsky 2004-08-31 $69,097,000
6713626 Process for synthesizing N-aryl piperazines with chiral N′-1-[benzoyl(2-pyridyl)amino]-2-propane substitution Joseph Zeldis, Ivo L. Jirkovsky 2004-03-30 $80,858,000
6693197 Process for the synthesis of derivatives of 2,3-dihydro-1,4-dioxino- [2,3-f] quinoline Anita Wai-Yin Chan, Timothy T. Curran, Silvio Iera, Warren Chew, John H. Sellstedt +2 more 2004-02-17 $179,126,000
5750735 2-thiosubstituted carbapenems Yang-I Lin, Panayota Bitha, Subas Sakya, Timothy W. Strohmeyer, Karen Bush +1 more 1998-05-12
5744465 Method of inhibiting a .beta.-lactamase enzyme by administering novel 2-thiosubstituted carbapenems Yang-I Lin, Panayota Bitha, Subas Sakya, Timothy W. Strohmeyer, Karen Bush +1 more 1998-04-28
5700930 4-substituted azetidinones as precursors to 2-substituted-3-carboxy carbapenem antibiotics and a method of producing them William V. Curran, Carl Bernard Ziegler 1997-12-23
5656753 4-substituted azetidinones as precursors to 2-substituted-3-carboxy carbapenem antibiotics and a method of producing them William V. Curran, Carl Bernard Ziegler 1997-08-12
5623081 Method for producing tetrahydrofuranyl compounds Yang-I Lin, Panayota Bitha, Subas Sakya, Timothy W. Strohmeyer, Karen Bush +1 more 1997-04-22
5602118 2-thiosubstituted carbapenems Yang-I Lin, Panayota Bitha, Subas Sakya, Timothy W. Strohmeyer, Karen Bush +1 more 1997-02-11