Doris P. Schumacher
16Patents
9h-index
29Co-inventors
72Inventor score
Filing activity: Apr 13, 1981 → Oct 17, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5739321A | 3-hydroxy .gamma.-lactone based enantionselective synthesis of azetidinones | Human Necessities | 43 | Expired |
| US4863931A | Antihistaminic fluoro substituted benzocycloheptapyridines | Human Necessities | 40 | Expired |
| US5886171A | 3-hydroxy gamma-lactone based enantioselective synthesis of azetidinones | Chemistry; Metallurgy | 32 | Expired |
| US4876352A | Pressurized fluorination of hydroxy alkyl groups | Electricity | 26 | Expired |
| US6096883A | 3-hydroxy gamma-lactone based enantioselective synthesis of azetidinones | Chemistry; Metallurgy | 24 | Expired |
| US5382673A | Process for preparing florfenicol, its analogs and oxazoline intermediates thereto | Chemistry; Metallurgy | 21 | Expired |
| US4731447A | Process for preparing piperidylidene dihydro-dibenzo(a,d)-cycloheptenes or aza-derivatives thereof | Chemistry; Metallurgy | 17 | Expired |
| US5227494A | Process for preparing oxazoline compounds | Chemistry; Metallurgy | 16 | Expired |
| US6506767B1 | 8-chloro-6,11-dihydro-11-(4-piperidylidine)-5H-benzo[5,6]cyclohepta[1-2-b] pyridine | Chemistry; Metallurgy | 9 | Expired |
| US4366309A | Derivatives of antibiotic AR-5 components | Chemistry; Metallurgy | 8 | Expired |
| US6875866B2 | Process for synthesis of D1 receptor antagonists | Chemistry; Metallurgy | 6 | Expired |
| US7462740B2 | Synthesis of 2-hydroxy-n,n-dimethyl-3-[[2-[[1(r)-(5-methyl-2-furanyl)propyl]amino]-3,4-dioxo-1-cyclobuten-1-yl]amino]benzamide | Chemistry; Metallurgy | 2 | Active |
| US4740598A | Conversion of aristeromycin into cyclaradine | Chemistry; Metallurgy | 2 | Expired |
| US7910775B2 | Synthesis of 2-Hydroxy-N,N-dimethyl-3-[[2-[[1(R)-(5-methyl-2-furanyl)propyl]amino]-3,4-dioxo-1-cyclobuten-1-yl]amino]benzamide | Chemistry; Metallurgy | 2 | Active |
| US7071342B2 | Synthesis of 2-hydroxy-N,N-dimethyl-3-[ [2-[1 (R)-(5-methyl-2-furanyl)propyl]amino]-3,4-dioxo-1-cyclobuten-1-yl]aminobenzamide | Chemistry; Metallurgy | 2 | Expired |
| US4873335A | 3-phenethyl-2-benzene-amides or aza-derivatives thereof | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.