JD

John R. Duchek

MA Mallinckrodt: 4 patents #85 of 489Top 20%
MC Mallinckrodt Specialty Chemicals: 2 patents #4 of 23Top 20%
📍 Chesterfield, MO: #905 of 6,461 inventorsTop 15%
🗺 Missouri: #3,070 of 23,789 inventorsTop 15%
Overall (All Time): #752,319 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
7402686 Cannabinoid crystalline derivatives and process of cannabinoid purification 2008-07-22
7323607 Process for preparation of (+)-p-mentha-2,8-diene-1-ol Hong Gu, J. Kendall Killgore 2008-01-29
6559319 Synthesis of compounds useful in the manufacture of ketorolac Douglas C. Caskey, Henry J. Buehler 2003-05-06
6489491 Synthesis of compounds useful in the manufacture of ketorolac Douglas C. Caskey, Henry J. Buehler 2002-12-03
6376681 Synthesis of compounds useful in the manufacture of ketorolac Henry J. Buehler, Douglas C. Caskey 2002-04-23
5312970 Method of preparing D-propoxyphene 1994-05-17
5227526 Resolution of 3-dimethylamino-2-methylpropiophenone (3-DAMP) 1993-07-13