James A. Down
30Patents
13h-index
18Co-inventors
78Inventor score
Filing activity: Jan 28, 1993 → Mar 13, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6607513B1 | Device for withdrawing or administering a substance and method of manufacturing a device | Performing Operations; Transporting | 126 | Expired |
| US5616701A | DNA purification by solid phase extraction using a hydroxide-washed glass fiber membrane | Chemistry; Metallurgy | 54 | Expired |
| US5342931A | Process for purifying DNA on hydrated silica | Emerging Cross-Sectional Technologies | 44 | Expired |
| US5693785A | Purification of DNA on Hydroxylated Silicas | Emerging Cross-Sectional Technologies | 43 | Expired |
| US5438129A | DNA purification by solid phase extraction using partially fluorinated aluminum hydroxide adsorbant | Performing Operations; Transporting | 33 | Expired |
| US5438127A | DNA purification by solid phase extraction using a PCl.sub.3 modified glass fiber membrane | Chemistry; Metallurgy | 31 | Expired |
| US5376527A | Process for lysing mycobacteria | Chemistry; Metallurgy | 24 | Expired |
| US8708994B2 | Method for altering drug pharmacokinetics based on medical delivery platform | Human Necessities | 24 | Active |
| US5674997A | DNA purification on modified siligates | Chemistry; Metallurgy | 22 | Expired |
| US8172815B2 | Device for withdrawing or administrating a substance and method of a device | Performing Operations; Transporting | 22 | Active |
| US5503816A | Silicate compounds for DNA purification | Chemistry; Metallurgy | 18 | Expired |
| US5650506A | Modified glass fiber membranes useful for DNA purification by solid phase extraction | Chemistry; Metallurgy | 16 | Expired |
| US5525319A | Boron silicates, aluminum silicates, and phosphosilicates for purification of DNA | Chemistry; Metallurgy | 15 | Expired |
| US5606046A | DNA purification by solid phase extraction using trifluorometric acid washed glass fiber membranes | Chemistry; Metallurgy | 13 | Expired |
| US5625054A | DNA purification by solid phase extraction using fluorinated celite | Performing Operations; Transporting | 13 | Expired |
| US8465468B1 | Intradermal delivery of substances | Human Necessities | 12 | Expired |
| US5512440A | Process for lysing Mycobacteria | Chemistry; Metallurgy | 11 | Expired |
| US5523392A | Purification of DNA on aluminum silicates, and phosphosilicates | Chemistry; Metallurgy | 11 | Expired |
| US5610291A | Glass fiber membranes modified by treatment with SiCl.sub.4, AlCl.sub.3 or BCl.sub.3 and washing with NaOH to set as a DNA Adsorbant | Chemistry; Metallurgy | 10 | Expired |
| US5610290A | DNA purification by solid phase extraction using glass fiber membrane previously treated with trifluoroacetic acid, and then with fluoride ion, hydroxide ion, or Bcl.sub.3 | Chemistry; Metallurgy | 9 | Expired |
| US5766852A | Process for lysing mycobacteria | Chemistry; Metallurgy | 8 | Expired |
| US5554503A | Sample processing method for Mycobacterium tuberculosis | Chemistry; Metallurgy | 5 | Expired |
| US5520899A | Process for preparing boron, aluminum, and phosphorus silicates for purification of DNA | Chemistry; Metallurgy | 5 | Expired |
| US9242052B2 | Method for altering drug pharmacokinetics based on medical delivery platform | Human Necessities | 5 | Active |
| US5856145A | Process for lysing mycobacteria | Chemistry; Metallurgy | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.