David A. Rowlands
10Patents
6h-index
14Co-inventors
55Inventor score
Filing activity: Aug 1, 1977 → Jul 31, 1986
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4145419A | Novel imidazobenzoxazines | Chemistry; Metallurgy | 10 | Expired |
| US4151280A | Pyrroloquinoxalines | Chemistry; Metallurgy | 10 | Expired |
| US4207318A | Novel imidazobenzoxazines | Human Necessities | 9 | Expired |
| US4333934A | Imidazoquinoxalines and pyrroloquinoxalines | Chemistry; Metallurgy | 8 | Expired |
| US4474784A | Substituted imidazo 1,2-a-quinoxaline-4-(5H)ones, their compositions and method of use | Chemistry; Metallurgy | 7 | Expired |
| US4472400A | Triazoloquinazolones having antihistaminic and bronchospasmolytic activity | Chemistry; Metallurgy | 6 | Expired |
| US4547507A | Benzothiopyranopyridinones | Chemistry; Metallurgy | 5 | Expired |
| US4762840A | Pyrimido[2,1-b]benzothiazoles having antiallergic activity | Chemistry; Metallurgy | 3 | Expired |
| US4644002A | Imidazo[2,1-C]quinolines, useful as antiallergic agents | Chemistry; Metallurgy | 3 | Expired |
| US4464373A | 4,5-Dihydroimidazo-[1,2-a]quinoxaline-2-carboxylic acids and their derivatives with antiallergic activity | Human Necessities | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.