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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 6223590 | Volatilization device for liquids The process is disclosed for transforming a liquid mixture sample in a pressurized container to a vapor phase sample of substantially the same concentration as in the liquid mixture which includes the combination of a coarse filter, a first orifice or pre... | 05/01/2001 |
| 6120166 | Light source apparatus for a spectral analyzer A filter IR spectral analyzer has a highly efficient compact imaging optical collector having a first concave reflector of ellipsoidal design or shape, having a light source at one of its foci and a second concave reflector of spherical design which has i... | 09/19/2000 |
| 6100529 | Automatic portable automotive refrigerant analyzer An automatic no moving parts portable IR spectrometer for the purpose of analyzing automotive refrigerants comprising an IR source with intermittent output by electronic means not requiring an optical cavity or mechanical chopper, a gas cell which is acti... | 08/08/2000 |
| 5723341 | Screen cell and method of using A method of analyzing a specimen by infrared spectroscopy is disclosed wherein a specimen support having a plurality of unobstructed holes of substantially uniform size and a film of the specimen enclosing each hole is positioned vertically in the spectro... | 03/03/1998 |
| 5677191 | Organic chemical compound test papers and method of using same A series of organic test papers are described for the detection and identification of all types of organic compounds such as aldehydes, ketones, esters, acids, amines, isocyanates, anhydrides, amides, nitrides, aromatics, phenols, ethers, and other organi... | 10/14/1997 |
| 5584557 | High efficiency compact illumination system An improved illumination system employing two concave reflecting mirrors and a non-imaging reflector to concentrate energy (light) more efficiently is disclosed.... | 12/17/1996 |
| 5519220 | FTIR chemical reaction monitor The device of the invention employs a small Teflon.RTM. vial which is mounted in a vertical position in a plastic box, and a segment of screen attached to a rod which can be raised or lowered into the reaction vessel which contains liquid reactants. When ... | 05/21/1996 |
| 5519219 | Portable filter infrared spectrometer There is described within a portable, battery-powered multiple filter infrared spectrometer consisting of a highly efficient optical system employing an infrared source with a chopper, from which IR energy passes through compound parabolic concentrators (... | 05/21/1996 |
| 5428222 | Spectral analyzer with new high efficiency collection optics and method of using same A spectral analyzer has a high efficiency optical collector having a first concave reflector portion and an opposed second concave reflector portion providing an exit passage therethrough, and a light emitting source of a predetermined wavelength range is... | 06/27/1995 |
