Drummond Scientific Company Patent applications |
Patent application number | Title | Published |
20140272992 | Method and Apparatus for Rapidly and Cyclically Heating and Cooling a Fluid Sample During PCR Testing - Methods and apparatuses rapidly and cyclically heating and cooling a fluid sample during PCT testing to reduce the duration for full amplification of target DNA using most PCR procedures. Instead of heating and cooling static target solution in a reaction tube, the target solution reciprocates (alternately flows) back and forth within an elongate, thick-walled, small-bore tube. Sections of the tube are maintained at different temperatures so that an ascending/descending temperature gradient is maintained along the length of the tube. As the target solution flows within and along the tube from section to section, it rapidly achieves thermal equilibrium with the tube at each section, thereby rapidly thermally cycling the target solution. | 09-18-2014 |
20110011330 | Dual-Temperature, Sealed-System Critical Temperature Indicator - An inexpensive, disposable apparatus that visually indicates whether an object has been exposed to either one or both of two predetermined critical temperatures such as a critical high T | 01-20-2011 |
20090035744 | Apparatus and Method for Separating and Storing Human Reproductive Material in a Cryotank - Apparatus and method for separating individual human reproductive material from a fertilization dish and storing the material in a cryotank for future fertilization and implantation. The apparatus includes an elongate cryostraw having a first open end and second heat-sealable open end, a channel extending between said ends, and an internal, calibrated volume VC. A displacement bulb is connected to the first end of the cryostraw for admitting and emitting the material into said cryostraw. The bulb has a total volume VB | 02-05-2009 |