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USPTO Patent Rankings Data through Dec 31, 2025
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Pulla Singam — 4 Patents

Abbott: 3 patents #2,106 of 5,509Top 40%
Waukegan, IL: #106 of 352 inventorsTop 35%
Illinois: #21,640 of 84,256 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Pulla Singam has been granted 4 US patents while listed as an inventor at Abbott. The first was granted in 1995 and the most recent in February 2001. Pulla Singam ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Pulla Singam in Waukegan, IL, US.

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6184376 Synthesis of acyclic nucleoside derivatives M. Robert Leanna, Steven M. Hannick, Michael Dolberg Rasmussen, Jien-Heh J. Tien, Lakshmi Bhagavatula +18 more 2001-02-06
6103911 Process for reduction of (2R)-4-oxoazetidinone-2-carboxylic acid James E. Resek, Shyamal I. Parekh, Hemant H. Patel, Michael H. Cain, Bikshandarkoil A. Narayanan 2000-08-15 $644,880,000
5801250 Process for the stereoselective production of nitro-enamine compounds Patricia Oliver-Shaffer, Bikshandarkoil A. Narayanan, James E. Resek 1998-09-01 $34,880,000
5424444 Method of preparing enantiomerically-pure 3-methyl-5-(1-alkyl-2(S)-pyrrolidinyl) isoxazoles Nan-Horng Lin, Yun He, Richard L. Elliott, Mukund S. Chorghade, Thomas K. J. Esch +7 more 1995-06-13 $33,360,000