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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 7900525 | Cathode handler system A pre-assembled, disposable cathode handler assembly facilitates automated or manual loading of a cathode with analyte for spectrometric analysis and is intended for a single use application. This cathode handler assembly is comprised of several parts which work coo... | 03/08/2011 |
| 7350427 | Sorbent collector material based on polyorganosiloxane The invention relates to a sorbent collector material based on polyorganosiloxane for the microextraction of substances to be analysed, the collector material having an open-cell foam structure, and to a collector and a liner which include this collector material. | 04/01/2008 |
| 7272980 | Aseptic fluid sampler and method A method of using an aseptic sampling arrangement. The sampling arrangement includes a septum cartridge and a securing element for use with a fluid enclosure. A locking arrangement is provided to allow selective access to the septum cartridge and the securing elemen... | 09/25/2007 |
| 7272981 | Aseptic fluid sampler and method An aseptic sampling arrangement that provides selective access to an interior of a fluid enclosure. The sampling arrangement includes a septum cartridge and a securing element for use with the fluid enclosure. A locking arrangement is provided to allow selective acc... | 09/25/2007 |
| 7258783 | Fluid delivery system for a water tub using a removeable chemical carrier A water tub including a fluid delivery system utilizes a removeable carrier to provide fluids to the fluid delivery system. In some instances, the carrier is disposable such that depletion of the fluids within the container results in the carrier being thrown away a... | 08/21/2007 |
| 7089812 | Transfer of a sample from a solid support into a liquid An apparatus (10) and a method for concentrating and transferring volatile compounds contained in a sample on a detachable solid support (12) into a liquid for subsequent detection and/or analysis of the volatile compounds, are described. The apparatus... | 08/15/2006 |
| 7055402 | Method and apparatus for liquid chromatography automated sample loading A method for automated loading of liquid sample to a liquid chromatography testing device is provided including installing a disposable tip on a probe, moving the probe with an automated liquid handler to a loading position proximate to a sample, and drawing a sampl... | 06/06/2006 |
| 6825478 | MALDI plate with removable magnetic insert A sample plate structure is provided including a retainer plate having a central recess with a trough along its periphery, a sample insert plate which fits into and rests on contact surface of the recess, and a magnet that is held below the contact surface. A portio... | 11/30/2004 |
| 5393497 | Device for containing and opening a glass ampule and for transferring liquid within the ampule to a container A device (2) used to transfer the liquid contents (156) of a glass ampule (8) to a vial (10) includes a telescoping ampule body (12, 14) defining a collapsible, substantially air-tight region (22) within which the ampule is housed, which collapses when on... | 02/28/1995 |
| 5305658 | Capsule transfer device There is provided a device for placing a capsule into a container, slitting the capsule to release its content, washing the capsule and that part of the device which is in direct contact with the capsule and its content for quantitatively transferring the... | 04/26/1994 |
| 5031797 | Reagent storage and delivery system A reagent storage and delivery apparatus comprises a reagent cartridge having a plurality of fluidic chambers and includes a flange means for receiving a label to define a code indicating information concerning the contents of the cartridge. Preferably, a... | 07/16/1991 |
| 5002894 | Method for the determination of lignin content of a sample by flash pyrolysis in an atmosphere of hydrogen or helium and method therefor The lignin content of wood, paper pulp or other material containing lignin (such as filter paper soaked in black liquor) is more readily determined by flash pyrolysis of the sample at approximately 550° C. in a reducing atmosphere of hydrogen or in an in... | 03/26/1991 |
| 4896545 | Automatic fluid injector An automated fluid injector which includes, in combination, (A) a syringe, (B) an injector feed assembly for introducing a fluid specimen into the syringe, (C) a magazine for transporting fluid specimens for pick up by the injector feed assembly, and (D) ... | 01/30/1990 |
| 4818489 | Device for sampling breath air at the workplace A pocket instrument for sampling breath air in situ, includes a microprocessor-controlled directional control valve with needles at an outlet to which needle the sample vessels are attached. The directional control valve is arranged to be connected throug... | 04/04/1989 |
| 4634867 | Introduction of samples into a mass spectrometer The introduction of a sample into a mass spectrometer providing in one aspect a method which comprises placing the sample in a tube (16) open at only one end, placing around the tube (16) an O-ring (30), placing the sample tube (16) with its open end adja... | 01/06/1987 |
| 4634865 | Introduction of samples into a mass spectrometer Magazine for introducing samples into the inlet system of a mass spectrometer. The magazine (22) comprises a flat plate having upper and lower surfaces which are generally horizontal during use. A zig-zag groove (32) is formed in the lower surface engagea... | 01/06/1987 |
| 4634866 | Introduction of samples into a mass spectrometer A feed system for picking a sample tube off a magazine and introducing the sample tube into the inlet system of a mass spectrometer. The feed system comprises a pick-up tube (52) designed at its forward end to fit over a sample tube (16) resting on the ma... | 01/06/1987 |
| 4609991 | Automated system for determining the molecular weight and/or concentration of macromolecules via sedimentation equilibrium An automated system for measuring the concentration gradient of centrifuged solute and directly calculating the molecular weight and/or sedimentation coefficient of an optically absorbing solute. Monochromatic light passes through a stationary slit and a ... | 09/02/1986 |
| 4499776 | Vacuum sample introduction unit A vacuum sample introduction device includes a roller bearing assembly which rigidly supports a probe rod for accurate reciprocation relative to the device.... | 02/19/1985 |
| 4454095 | Automatic chemical analysis devices and methods An automatic chemical analysis device particularly designed for determination of carbon content in liquid samples comprises a turret with peripheral cavities to receive and transport tubular encased liquid sample ampoules, a base plate on which the turret... | 06/12/1984 |
| 4445390 | Sampling tube and apparatus The sampling tube of the present invention is cost effective in its design and operates efficiently and relatively quickly in order to obtain a complete hydrogen sample although its application is not necessarily limited to the sampling of hydrogen conten... | 05/01/1984 |
| 4387076 | Sample feeding arrangement A sample feeding arrangement which receives sealed sample tubes, moves them one at at time to a seal piercing and sample aspiration station, and then discharges the used tubes. This sample feeding arrangement is mounted inside a sample analyzer of the typ... | 06/07/1983 |
| 4351193 | Sampler for analytical detection systems The invention relates to a sampler for analytical detection systems, comprising a slide sealingly housed between two guide walls and movable to put a housing thereof from a sample receiving position to a sample delivering position and viceversa, said hous... | 09/28/1982 |
| 4308756 | Vacuum sample introduction unit A sample loading device for loading samples into and unloading samples from an ultra high vacuum analysis chamber without the necessity to raise and lower pressure each time a sample loading or unloading is effected, is described. The sample is initially ... | 01/05/1982 |
| 4226119 | Sample introduction system A sample introduction system for a gas chromatograph having a chamber containing a needle for piercing a sample held in a holder and introduced into the chamber via a lock. The needle has a conical point into which a passageway opens perpendicular thereto... | 10/07/1980 |
| 4185500 | Sample introduction system A sample introduction system for a gas chromatograph having a chamber, a lock and a sample holder for introducing a sample via the lock into the chamber which has a needle for piercing the sample to allow a carrier gas introduced into the chamber access t... | 01/29/1980 |
| 4159894 | Method for determining formulation and chemical structure of materials by improved pyrolysis gas chromatography A material containing both volatile and nonvolatile components, such as a compounded high polymer, is analyzed using pyrolysis gas chromatography by directly inserting a sample into a sample injection chamber in contact with a flowing carrier gas stream u... | 07/03/1979 |
| 4055259 | Sample transport with rotary air interlock charging and discharging means A compact, sealable sample transport apparatus for conveying material from a supply to a combustion chamber, includes an elongated ladle member longitudinally moved in a conduit to the combustion chamber and coacting rotary magazine and transfer plate mem... | 10/25/1977 |
| 4049134 | Movable ladle in a pressurized conduct for transporting specimens to a combustion chamber A compact, sealable ladle transport for conveying material from a supply to a chamber, such as a combustion chamber, consists of an elongated ladle member longitudinally moved in a conduit to the combustion chamber by a power driven flexible tape attached... | 09/20/1977 |
| 3964872 | Injecting device of a solvent-free sample for a gas analyzer A sample injecting device for a gas analyzer for injecting solvent-free, non-gaseous samples automatically or manually into the gas analyzer carrier gas, which device essentially comprises a vessel tightly connected to a furnace producing the vaporization... | 06/22/1976 |
| 3933431 | Method and apparatus for sampling atmospheric mercury A method of simultaneously sampling particulate mercury, organic mercurial vapors, and metallic mercury vapor in the working and occupational environment and determining the amount of mercury derived from each such source in the sampled air. A known volum... | 01/20/1976 |
