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| Number | Title | Issue Date |
| 4016980 | Device for checking envelopes for enclosed documents A device for inspecting envelopes for enclosed contents consists of a conveyor for feeding the envelopes one at a time past an inspection station whereat the opacity of an envelope is sensed at two zones spaced from one another along a line perpendicular ... | 04/12/1977 |
| 4013364 | Baseline correction in densitometrical measurements Method and apparatus for densitometry wherein a sample spot developed on a supporting medium is scanned by monochromatic light in a zigzag way, and at a predetermined point outside the spot in each scanning stroke the measured output is periodically sampl... | 03/22/1977 |
| 4012144 | Spectrosorptance measuring system and method Apparatus and method for measuring the absolute absorptance of a relatively thin sample displaying both reflecting and transmitting characteristics. An integrating sphere is provided, and monochromatic reference and sample beams are projected into the sph... | 03/15/1977 |
| 4009435 | Apparatus for preservation and identification of particles analyzed by flow-through apparatus An apparatus for identifying particles such as cells in a liquid suspension includes a particle scanning device containing a suspension of the particles. The suspension moves in a stream through a sensing zone in the device, which, for example, may be a C... | 02/22/1977 |
| 3998551 | Device for measuring stimulus values of the color of a liquid A device for measuring three stimulus values of the color of a liquid as a way of determining the color of the liquid. The device has an optical part having a source of light, an integrating ball having an inlet for light and three light receiving element... | 12/21/1976 |
| 3994587 | Densitometer Densitometer for quantitative determination of the content of a sample spot on a TLC plate or the like, wherein dualwavelength zigzag scanning is conducted on the spot. Light reflected and transmitted by the sample is received by photometers, and compensa... | 11/30/1976 |
| 3994586 | Simultaneous determination of film uniformity and thickness A method and apparatus are disclosed for simultaneously determining thickness and uniformity of a supported film which is at least partially translucent by directing a beam of radiation at the film at an angle thereto, reflecting a portion of the radiatio... | 11/30/1976 |
| 3992099 | Source discriminator for measuring angle of arrival and wavelength of radiant energy The embodiment of the invention disclosed herein is directed to an angle of arrival source discriminator for determining both the spectral content of incident radiant energy and for simultaneously determining the angle of arrival of said incident radiant ... | 11/16/1976 |
| 3992100 | Paper machine optical monitoring device with integral standardizing optical window In an illustrated embodiment, brightness, color, opacity and fluorescent contribution to brightness are measured by an on-line sensing head providing for simultaneous measurement of transmitted and reflected light. The instrument is designed so as to be c... | 11/16/1976 |
| 3992101 | Scanning optical spectral analyzer employing plural detectors A scanner having an instantaneous narrow field of view determines spectral and positional information of a point source of optical radiation in a relatively wide field of view. A first optical path includes the scanning means, a dispersion means, and a fi... | 11/16/1976 |
| 3984189 | Method and apparatus for detecting defects in a surface regardless of surface finish A method and apparatus for detecting a flaw, color shading, or the like on the surface of a running object and for producing an electrical signal in response thereto by optically scanning such surface, characterized in that there is provided not only a ph... | 10/05/1976 |
| 3972614 | Method and apparatus for measuring one or more constituents of a blood sample The invention relates to a method and apparatus for measuring one or more data of blood samples, such as oxygen saturation, contents of hemoglobin, bicarbonate, sodium, potassium, etc. involving hemolyzation of the blood sample. The blood sample is passed... | 08/03/1976 |
| 3963355 | Process and apparatus for analyzing specimens for the presence of microorganisms therein Microorganisms in a specimen are detected, identified, and enumerated by introducing the specimen into a sampling cartridge and diluting the specimen with a known volume of water within the cartridge. The cartridge has a manifold and several cassettes att... | 06/15/1976 |
| 3958882 | Sample chamber for an optical spectrometer A sample chamber for an optical spectrometer comprising means for selecting one of two modes of operation: a transmission mode or a reflection mode. The mode-selecting means comprise optical elements for switching the path of the optical beam passing thro... | 05/25/1976 |
| 3954336 | Chemical analysis method and apparatus A method of chemical analysis of a sample in solution in which the optical density of the solution is modified by addition of a dye to the solution, and the modified optical density is utilized in determining the concentration of the sample in the solutio... | 05/04/1976 |
| 3950102 | Analysis lamp, particularly for the examination of precious stones An analysis lamp, particularly for the examination of precious stones, with at least one daylight source and at least one UV light source, the observation planes for the light emitted by the daylight source and by the UV source being spatially separated f... | 04/13/1976 |
| 3936189 | On-line system for monitoring the color, opacity and brightness of a moving web An on-line system for continuously monitoring the color, opacity and brightness of a moving web of paper or the like in which an optical shoe providing black and white backgrounds spaced in the direction of movement of the web supports a portion of the we... | 02/03/1976 |
