Quotables
"The production of too many useful things results in too many useless people."
Karl Marx
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 5246758 | Optical recording medium An optical recording medium, including a substrate and a recording film disposed thereon, wherein an optical shutter layer is disposed in front of the recording film with respect to the direction of an incident reading light beam or recording light beam w... | 09/21/1993 |
| 4497999 | Warm-air hand drying apparatus using an induced heated air flow A regulated compressed air source supplies compressed air to a plurality of individual hand dryer stations where an air moving device such as an ejector or venturi operable heat exchanger to a user. In the preferred embodiment, the heat exchanger of each ... | 02/05/1985 |
| 4068953 | Raman scattering method and apparatus for measuring isotope ratios and isotopic abundances Raman scattering is used to measure isotope ratios and/or isotopic abundances. A beam of quasi-monochromatic photons is directed onto the sample to be analyzed, and the resulting Raman-scattered photons are detected and counted for each isotopic species o... | 01/17/1978 |
| 4047817 | Photographic color densitometer check plate A density check plate comprising a support having thereon a plurality of light absorbing filters, each of which has a light transmission limit wavelength at a different spectral wavelength and which completely and sharply absorbs light of a wavelength sho... | 09/13/1977 |
| 4043668 | Portable reflectance spectrometer A portable reflectance spectrometer is disclosed. The spectrometer essentially includes an optical unit and an electronic recording unit. The optical unit includes a pair of thermoelectrically-cooled detectors, for detecting total radiance and selected ra... | 08/23/1977 |
| 4035085 | Method and apparatus for comparing light reflectance of a sample against a standard Fluorinated aliphatic long chain addition polymers comprised of at least one monomer having at least one fluorine atom attached to a chain carbon atom are used in various environments for their ability to reflect a high percentage of incident light having... | 07/12/1977 |
| 4035086 | Multi-channel analyzer for liquid chromatographic separations Multi-channel analyzer for the optical comparison of sample fractions separated by liquid chromatography for detecting differences or ratios between, for example, reference and sample, solvent and sample, buffer and sample, or two different samples, havin... | 07/12/1977 |
| 4035064 | Light concentrator having an anticlastic reflective surface Devices for concentrating radiant energy and having reflective anticlastic surfaces, produced by processes involving shrinking an elastic reflective film onto a rigid frame representing one or a series of twisted squares, or by twisting a semi-rigid elast... | 07/12/1977 |
| 4033699 | Vapor concentration monitor An apparatus for monitoring the concentration of a vapor, such as heavy water, having at least one narrow bandwidth in its absorption spectrum, in a sample gas such as air. The air is drawn into a chamber in which the vapor content is measured by means of... | 07/05/1977 |
| 4030829 | Keying waveform generator for spectrophotometer In a double beam spectrophotometer employing a rotating optical chopper to direct a beam of electromagnetic radiation alternately through sample and reference channels to a photomultiplier tube, a beam interrupter is used in combination with a photodiode ... | 06/21/1977 |
| 4030828 | Spectrophotometer There is provided a multi-functional spectrophotometer allowing various measurements in which a stigmatic concave grating is employed for selecting the wavelength of the measuring light. A number of miniature type detectors are employed for detecting the ... | 06/21/1977 |
| 4030833 | Color filter determining apparatus The filter insertion settings of a colored light projector are determined by projecting the colored light through different light color windows of a test probe onto a light measuring device to provide a predetermined signal. Diaphragms on the color window... | 06/21/1977 |
| 4030814 | Recipe magnifier and viewer A device for holding, viewing recipes and the like written on cards or other data storing means has a hollow triangular frame, a holder in the front of the frame, a magnifying glass, a stand for holding the data while it is viewed and light means in the f... | 06/21/1977 |
| 4029391 | Light probe and interface therefor A relatively viscous light transmissive liquid material, such as glycerine or the like, applied to the solid end portion of a light conducting member enhances the optical coupling with a sample or object having an irregular and/or glossy surface to be opt... | 06/14/1977 |
| 4029399 | Frame for convex mirror A mounting plate of generally semi-circular plan shape is provided and includes one straight side edge and an opposing arcuate side edge whose opposite ends converge toward the ends of the straight side edge. The arcuate side edge of the mounting plate in... | 06/14/1977 |
| 4027975 | Scanning monochromator and concave reflecting grating employed therein A scanning monochromator or spectrometer having a reflecting grating whose curvature in the meridian plane is equal to the curvature of a circle upon which the source, detecting means and grating lie and whose lines are ruled with a frequency which varies... | 06/07/1977 |
| 4027971 | Method of simultaneously counting blood cells An analytical apparatus includes means for simultaneously counting the quantity of blood cells, either erythrocytes or leucocytes, suspended in a predetermined quantity of fluid comprising a blood fraction as well as for determining the quantity of a chem... | 06/07/1977 |
| 4027973 | Detector apparatus for laser light scattering photometers Detector apparatus for a laser light scattering photometer of the type for measuring radiant power scattered from a sample at a selectable angle with respect to the direction of an incident beam of radiant power and for measuring radiant power transmitted... | 06/07/1977 |
| 4025172 | Compound unstable resonator A modification to the reflective surfaces in unstable resonator assemblies to improve the operating characteristics of such devices and enhance the quality in the far field of the output beam from such resonators is disclosed. Some modifications include t... | 05/24/1977 |
| 4025171 | Apparatus for parfocalizing objectives An objective, for use with an optical instrument such as a microscope, includes a housing formed of two generally tubular shaped members, one of which is coaxially and slidably mounted within the other. The objective also includes a rotatable member suppo... | 05/24/1977 |
| 4025173 | Side view mirror assembly A side view mirror assembly for attachment to a motor vehicle includes a mounting bracket and upper and lower mirrors carried thereon for simultaneous rotation in fixed angular relationship relative to each other. One of the mirrors is rotatable relative ... | 05/24/1977 |
| 4025203 | Mirror-type beam steerer having a virtual pivot A mirror-type beam steering apparatus employs at least one flexible mirror support member having, generally, the shape of the Greek letter lambda. Each such member has a pair of flexible leg sections that slant toward one another and are truncated into an... | 05/24/1977 |
| 4025196 | Asymmetric double pass grating monochromator Apparatus to perform correlation spectroscopy utilizes a zero dispersion monochromator having entrance, intermediate and exit slits. A ruled grating is located in the beam path between entrance and exit slits and is operable to disperse a beam of radiatio... | 05/24/1977 |
| 4023905 | Flash photolysis split beam spectrophotometer Method and apparatus for providing flash photolysis of CO-inhibited cytochrome oxidase in a first portion of a sample exposed to an oxygenating agent and optically comparing the result with a non-photolyzed second portion of the sample or with a previousl... | 05/17/1977 |
| 4023891 | Adjustable mirror mount assembly An adjustable two-axis lockable vibration resistant mirror mount assembly with an accuracy of approximately two arc seconds features separately adjustable inner and outer coaxial gimbals having locks which clamp the gimbals in the adjusted position withou... | 05/17/1977 |
| 4022531 | Monochromator A monochromator provided with a plurality of entrance windows for beams of white light emitted by respective lamps which are alternately operated. The internal optics of the monochromator consist of a dispersing system disposed so that each of the beams o... | 05/10/1977 |
| 4022523 | Adjustable focal length cylindrical mirror assembly An optical assembly which provides a cylindrical mirror of adjustable focal length, adjustable angle of elevation, adjustable horizontal orientation and adjustable angle of focus. The mirror is formed of a thin member of a spring material and it is mounte... | 05/10/1977 |
| 4021122 | Glass container inspection machine Containers are diverted from a conveyor onto a base where each container is rolled into an inspection station defined by three rollers. A side belt rolls the containers against a rail and one of the three rollers projects beyond the rail at said inspectio... | 05/03/1977 |
| 4021101 | Optical focussing device for focussing a radiation beam An optical focussing device for focussing a radiation beam on a record carrier, more particularly for focussing a light beam on a video record, the objective being included in an electronic position control system with the aid of an electromagnetic drive ... | 05/03/1977 |
| 4017191 | Two-beam photometer with rotatable graded interference filter The two-beam photometer is suitable for extinction measurement on weakly-absorbent samples. The principle of measurement is based on a wavelength selection in either the comparison beam and the measuring beam. In the beam configuration measuring and compa... | 04/12/1977 |
| 4017185 | Optical arrangements for coupling monochromators with external systems External coupling optics, including a spherical mirror, is located in the beam path between a curved slit and a detector for imaging the slit onto the detector; alternatively, the beam path is between a light source and the slit for imaging the slit onto ... | 04/12/1977 |
| 4017162 | Adjustable slit mechanism A metal foil or plate for use in the slit mechanism of optical systems and having two jaw sections between which the slit is defined. The jaw sections are interconnected through an integral hinge portion of the plate which is adaptable to flex so that the... | 04/12/1977 |
| 4013368 | Sample cartridge for use in apparatus for evaluation of biological fluid The apparatus comprises a plurality of stationary cuvettes, a chamber for the fluid to be evaluated, means for placing the chamber in fluid communication with each of the cuvettes and for permitting the flow of fluid from the chamber into each of the cuve... | 03/22/1977 |
| 4012146 | Two wave length, scanning and integration type method of microspectrophotometrically measuring the light absorbancy of a specimen and microspectrophotometer for automatically carrying out the method of measurement A two wave length, scanning and integration type method of microspectrophotometrically measuring the light absorbancy of a specimen dyed with a coloring matter comprising scanning the specimen by light spots having two different wave lengths and integrati... | 03/15/1977 |
| 4012147 | Slit-less spectrometer The use of an optical fiber for providing a point source of radiation at the entrance of a spectrometer obviates the necessity for an entrance slit at the input end of the device. Improved optical imaging at decreased expense is achieved.... | 03/15/1977 |
| 4009961 | Contour line plotting devices A device for deriving the contour lines for an object from stereophotographic films taken through photographic lenses comprises steroscopic viewing apparatus for comparing the films to locate the different points on the object having a selected height and... | 03/01/1977 |
| 4008963 | Method of and device for the analysis of samples by means of flameless atomic absorption spectroscopy A method of atomization of a sample for analysis by atomic absorption spectroscopy in which the sample is progressively heated to drying, ashing and atomization temperatures by subjecting it sequentially to discrete ambient temperature increments. A prefe... | 02/22/1977 |
| 4008961 | Monochromatic detection of plural rotational Raman spectra generated by multiple frequency excitation A method and apparatus for spectroscopic gas analysis are provided. Plural beams of monochromatic radiation are directed through gaseous material. A tuning mechanism adjusts the frequency difference between the radiation beams to equal substantially an od... | 02/22/1977 |
| 4006971 | Reflective imaging apparatus The subject invention provides a reflex camera having a novel means of image reflection for use in viewing an image, transmitted through an entrance pupil to said image reflection means, at an exit pupil remote from both said means and said entrance pupil... | 02/08/1977 |
| 4003660 | Sensing head assembly for multi-color printing press on-line densitometer A sensing head assembly for a multi-color printing press on-line densitometer movably mounted on support members that extend across the width of a printed web of paper that has printed thereon, in addition to the printed matter being monitored, a pluralit... | 01/18/1977 |
