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

Grayson W. Stowell — 46 Patents

MAMannkind: 17 patents #15 of 146Top 15%
TSTorrey Pines Institute For Molecular Studies: 2 patents #15 of 50Top 30%
Cary, NC: #85 of 3,681 inventorsTop 3%
North Carolina: #655 of 45,564 inventorsTop 2%
Overall (All Time): #62,001 of 4,157,543Top 2%
46 Patents All Time
Grayson W. Stowell has been granted 46 US patents while listed as an inventor at Mannkind. The first was granted in 2001 and the most recent in August 2025. Grayson W. Stowell ranks #62,001 of 4,157,543 US inventors in our database (top 1.5%). Patent records list Grayson W. Stowell in Cary, NC, US.

Issued Patents All Time

Showing 1–25 of 46 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12383552 Diketopiperazine microparticles with defined specific surface areas Marshall L. Grant, Paul Menkin, John J. Freeman 2025-08-12
11607410 Diketopiperazine microparticles with defined specific surface areas Marshall L. Grant, Paul Menkin, John J. Freeman 2023-03-21 $14,048,000
11433135 High capacity diketopiperazine microparticles and methods Marshall L. Grant, Paul Menkin 2022-09-06 $15,398,000
10772883 Diketopiperazine microparticles with defined specific surface areas Marshall L. Grant, Paul Menkin, John J. Freeman 2020-09-15 $3,486,000
10603383 High capacity diketopiperazine microparticles and methods Marshall L. Grant, Paul Menkin 2020-03-31 $1,526,000
10376587 High capacity diketopiperazine microparticles and methods Marshall L. Grant, Paul Menkin 2019-08-13 $2,853,000
10258664 Methods and compositions for treating pain Andrea Leone-Bay, Richard A. Houghten, Joseph J. Guarneri 2019-04-16 $8,322,000
10130709 High capacity diketopiperazine microparticles and methods Marshall L. Grant, Paul Menkin 2018-11-20 $2,791,000
9630930 Diketopiperazine microparticles with defined specific surface areas Marshall L. Grant, Paul Menkin 2017-04-25 $1,877,000
9610351 Methods and compositions for treating pain Andrea Leone-Bay, Richard A. Houghten, Joseph J. Guarneri 2017-04-04 $2,938,000
9364436 High capacity diketopiperazine microparticles and methods Marshall L. Grant, Paul Menkin 2016-06-14 $6,382,000
9233159 Methods and compositions for treating pain Andrea Leone-Bay, Richard A. Houghten, Joseph J. Guarneri 2016-01-12 $7,229,000
8785396 Method and composition for treating migraines Andrea Leone-Bay, Joseph J. Guarneri, Dawn M. Carlson, Marshall L. Grant, Chad C. Smutney 2014-07-22 $42,829,000
8778403 Diketopiperazine microparticles with defined specific surface areas Marshall L. Grant, Paul Menkin 2014-07-15 $89,470,000
8734845 Diketopiperazine microparticles with defined specific surface areas Marshall L. Grant, Paul Menkin 2014-05-27 $75,056,000
8642548 Val (8) GLP-1 composition and method for treating functional dyspepsia and/or irritable bowel syndrome Peter Richardson, Enda Kenny, Per Hellstrom, Marshall L. Grant, Scott Daniels +2 more 2014-02-04 $31,002,000
8551528 Diketopiperazine microparticles with defined specific surface areas Marshall L. Grant, Paul Menkin 2013-10-08 $24,897,000
6780880 FT-Raman spectroscopic measurement Robert R. Whittle, Frederick D. Sancilio 2004-08-24
6706737 Alkoxy substituted benzimidazole compounds, pharmaceutical preparations containing the same, and methods of using the same Robert R. Whittle, Frederick D. Sancilio, Douglas John Jenkins 2004-03-16
6673936 Process for purifying 6-methoxy omeprazole Linda B. Whittall, Robert R. Whittle 2004-01-06
6667324 Dry blend pharmaceutical formulations Robert R. Whittle, Frederick D. Sancilio, Douglas John Jenkins, Linda B. Whittall 2003-12-23
6667321 Alkoxy substituted benzimidazole compounds, pharmaceutical preparations containing the same, and methods of using the same Robert R. Whittle, Frederick D. Sancilio, Douglas John Jenkins, Linda B. Whittall 2003-12-23
6667323 Dry-blend pharmaceutical formulations Robert R. Whittle, Frederick D. Sancilio, Douglas John Jenkins, Linda Whittall 2003-12-23
6660864 Polymorphic forms of 6-[4-(1-cyclohexyl-1H-tetrazol-5-yl)butoxy]-3,4-dihydro-2(1H)-quinolinone Robert R. Whittle 2003-12-09
6657061 Polymorphic forms of 6-[4-1(1-cyclohexyl-1H-tetrazol-5-yl)butoxy]-3,4-dihydro-2(1H)-quinolinone Robert R. Whittle 2003-12-02