Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Ronald H. Erickson — 4 Patents

GPGuilford Pharmaceuticals: 1 patents #37 of 65Top 60%
MLMarion Laboratories: 1 patents #13 of 49Top 30%
MDMarion Merrell Dow: 1 patents #8 of 23Top 35%
SNScios Nova: 1 patents #30 of 56Top 55%
Baltimore, MD: #1,015 of 4,923 inventorsTop 25%
Maryland: #8,090 of 35,612 inventorsTop 25%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Ronald H. Erickson has been granted 4 US patents while listed as an inventor at Guilford Pharmaceuticals. The first was granted in 1988 and the most recent in October 1994. Ronald H. Erickson ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Ronald H. Erickson in Baltimore, MD, US.

Patents per Year

Patents granted per year, 1988 to 1994Bar chart with a peak of 2 patents in 1994.peak 21988: 1 patents19881991: 1 patents19911994: 2 patents1994

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5359098 Intermediates for making sigma binding site agents Kenneth J. Natalie, Jr., Michael J. Pontecorvo, Waclaw J. Rzeszotarski 1994-10-25 $290,000
5278174 Sigma binding site agents Kenneth J. Natalie, Jr., Michael J. Pontecorvo, Waclaw J. Rzeszotarski 1994-01-11 $5,569,000
5032593 Method of treating bronchoconstriction with 1,3-unsymmetrical straight chain alkyl-substituted 8-phenylxanthines Waclaw J. Rzeszotarski 1991-07-16 $57,894,000
4783530 8-arylxanthines Waclaw J. Rzeszotarski, Rickey P. Hicks 1988-11-08 $29,637,000