Celebrity Inventors
Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."
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 |
| 4256694 | Carbon monoxide monitoring system Colorimetric indicator material comprising alumina impregnated with permanganate ion and silver ion which changes color from purple to brown in the presence of carbon monoxide is disclosed. A personal monitor containing permanganate ion and silver ion imp... | 03/17/1981 |
| 4254083 | Structural configuration for transport of a liquid drop through an ingress aperture A device is disclosed that includes an ingress aperture which provides improved transport of a drop of liquid, from an exterior surface of the device to the device interior. Means are provided at the intersection of the aperture sidewall and the exterior ... | 03/03/1981 |
| 4238197 | Analysis of lubricating oils for iron content A method for analyzing a used lubricating oil for iron wear metal content in which all of the iron in a sample of the oil is extracted into an oil immiscible layer, buffering and reducing agents are added, and the iron in the solution is reacted with a ch... | 12/09/1980 |
| 4234317 | Apparatus and method for fractionation of lipoproteins An apparatus and method for fractionating a liquid sample is disclosed. The liquid sample is generally blood plasma or blood serum from which it is desired to selectively remove low density lipoproteins while leaving behind high density lipoproteins. The ... | 11/18/1980 |
| 4223089 | Process and diagnostic device for the determination of ammonia and of substrates which react with the formation of ammonia Diagnostic device for the determination of ammonia having a handle, an ammonia indicator layer thereon and an alkaline buffer-containing reaction layer positioned above the indicator layer a distance of 10 to 200 microns by a spacer member. The reaction l... | 09/16/1980 |
| 4201548 | Method for determining volatile substances in an aqueous solution and apparatus therefor A method for detecting and determining a volatile or volatilizable substance in an aqueous solution or liquid and an apparatus employed for this method are disclosed. The volatile component, vaporized from the solution through a water repellent and gas pe... | 05/06/1980 |
| 4199550 | Device for the uniform dosing of faecal matter for component detection A device for the uniform dosing of an amount of faeces onto reagent paper for the detection of a component material in the faeces. The device comprises test paper and a template disposed thereover having a given thickness and comprising at least one set o... | 04/22/1980 |
| 4195055 | Vapor-phase moving-boundary indicator A vapor-phase moving-boundary indicator, is described, which is useful for monitoring the time-temperature histories of perishable articles. The device functions by allowing a vapor to permeate through a porous substrate coated with an indicating solid wh... | 03/25/1980 |
| 4195056 | Vapor permeation time-temperature indicator A time-temperature indicator (t-T indicator) is described which is useful for monitoring the shelf lives of various perishable articles. The device is constructed of a vapor-permeable barrier positioned between a vapor and an indicator, both housed in a v... | 03/25/1980 |
| 4195058 | Vapor permeation time-temperature indicator An improved time-temperature indicator (t-T indicator) is described which is useful for monitoring the shelf lives of various perishable articles. The device is constructed of a vapor-permeable barrier positioned between a vapor and a liquid indicator, bo... | 03/25/1980 |
| 4195057 | Vapor-phase moving-boundary indicator An improved vapor-phase moving-boundary indicator is described, which is useful for monitoring the time-temperature histories of perishables. The device functions by allowing a vapor to permeate through a porous substrate contacted with a solution of a po... | 03/25/1980 |
| 4189304 | Device and method for detecting myoglobin A test device and method for detecting myoglobin in the presence of hemoglobin in a fluid test sample. The test device comprises a chromatographic medium incorporating serum, haptoglobin and/or antiserum which binds or retards hemoglobin while permitting ... | 02/19/1980 |
| 4181500 | Chemical testing systems A test system and method is described for determining if a material (e.g. uric acid) oxidizable by iodine is present in an aqueous fluid in an amount equal to or greater than a predetermined amount and which includes a dry solid iodine indicator and a dry... | 01/01/1980 |
| 4178153 | Method and apparatus for chemical spot test analysis Chemical analysis of a sample with reagents spotted on a fibrous or porous medium employs a medium pretreated both with reagents and with conditioning agent. The conditioning agent increases the degree to which the liquid reactants wet the medium. One for... | 12/11/1979 |
| 4174202 | Kit and method for testing liquids for hydrogen sulfide content A method for quickly determining whether or not the H2 S concentration in fluids exceeds a preselected level, such as that set by government standards for oil field fluids, comprises: (1) admixing a preselected quantity of a liquid to be tested... | 11/13/1979 |
| 4166720 | Leaching column and method of use A leaching column comprising two half cylinders held together by a removable band at one end and a leachate funnel at the other. For testing various pesticides and herbicides, the particular chemical is added to the leaching column and allowed it to pass ... | 09/04/1979 |
| 4160008 | Multilayered test device for determining the presence of a liquid sample component, and method of use A test device for determining the presence of a liquid sample constituent. The device comprises a base support member having attached to it an indicator member which produces a detectable response, such as a color change, in the presence of the sample con... | 07/03/1979 |
| 4144030 | Method for improving the rate and measurement accuracy of chemical analysis According to the method of this invention, liquid or solid samples are first measured inaccurately with a pipette or some other measuring instrument and the measured sample quantity is weighed. After the addition of reagents, the samples are measured by t... | 03/13/1979 |
| 4126417 | Means for testing and treatment of soil in which a plant is growing A testing and treatment kit, a soil testing device and a procedure adapted for the home owner, especially for raising plants in containers. A stick having a pH-testing coating on one side and a nitrate-testing coating on the other side, the coatings chang... | 11/21/1978 |
| 4125376 | Method for detecting water pollutants An improved method for identification and qualitative determination of potentially harmful pollutants in water through the use of a novel sampling test tube apparatus which consists essentially of a test tube containing a foam cube which has been impregna... | 11/14/1978 |
| 4106909 | Chemical analysis with coated, light waveguide under humidity control A coated waveguide holder-humidifier to supply moisture in the case of moisture-sensitive reactions in order that quantitative results might be obtained with a gradient light analytical detector which will quantitatively measure atmospheric contaminants b... | 08/15/1978 |
| 4095105 | Standardizing test sample In a sample used to test the accuracy of an instrument designed to quantitatively analyze organic material from the optical characteristics of the material, a sealed container is filled with a mixture of ground quartz and the organic material to be analyz... | 06/13/1978 |
| 4092115 | Method, device and test reagent for detecting free available chlorine in aqueous fluids A method, device and test reagent for detecting free available chlorine in aqueous fluids which utilizes as an indicator substance azine compounds of the formula: ##STR1## where R and R' are hydroxy or amino substituents and X, X', Y and Y' are ... | 05/30/1978 |
| 4083691 | Method for detecting contaminants in water A method for rapidly detecting organic pollutants in water utilizing cheml effervescence to accelerate release of contaminants into the atmosphere above the water sample where they can be detected by conventional air pollution detector tubes. An apparatu... | 04/11/1978 |
| 4066407 | Body fluid testing system and process A laboratory mixing apparatus for the testing of blood or other liquids includes a prescored capillary pipette to accurately measure the fluid, a centrifuge and a pipette breaking device. The pipette is secured to a squeeze bulb which ejects the fluid, af... | 01/03/1978 |
| 4063817 | Chemical reaction velocity measuring apparatus An apparatus for measuring velocity of chemical reaction by detecting change in light absorbance which stands in proportional relation with time, which comprises arranging plural samples at regular spacings, advancing said samples intermittently at consta... | 12/20/1977 |
| 4061468 | Stable test strips having a water-soluble paper layer and methods for making same Stable test strips for the detection of components in liquids, for example blood, ketone bodies and nitrates in urine, includes two indicator layers one of which is a water-soluble paper.... | 12/06/1977 |
| 4060388 | Specimen holding device and method of using same Disclosed is a specimen holding device suitable for holding fluid substances which are to be analyzed and which cause clouding or color change by reacting with a reagent, comprising a generally solid piece of transparent material containing a plurality of... | 11/29/1977 |
| 4044707 | Interruptible time-temperature indicator An indicator including a fluid source and an interruptible wick. The interruptible wick of this invention is severed from the fluid source at any desired point in time after the indicator has been activated thus stopping the recordation of the indicator.... | 08/30/1977 |
| 4043678 | Cuvette A multichamber cuvette for maintaining in independent and separate condition at least two reactants, one of which may be a sample, until such time that it is desired to mix them for reaction with each other for photometric analysis in the cuvette. At leas... | 08/23/1977 |
| 4042329 | Method and device for detecting cholesterol A disposable indicator which is useful for the measurement of chemical substances in biological fluids. The instrument registers the concentration of substance in a given biological fluid with indicia which are directly readable in a convenient notation s... | 08/16/1977 |
| 4040786 | Chemical analysis method using reaction container For use in measuring the extent or rate of optical density change produced by a reaction a rigid or semi-rigid disposable reaction container is disclosed of the type comprising a windowed reaction chamber adapted for the transmission of light therethrough... | 08/09/1977 |
| 4038030 | Profile analysis pack and method A profile analysis reaction pack and related apparatus are disclosed, along with a method for simultaneously mixing, heating and reacting selected test reagents with multiple dilutions of a sample of body fluid to obtain a profile of the physiological con... | 07/26/1977 |
| 4005983 | Method and apparatus for colorimetric analysis A colorimetric test for water in a vial which is prepacked with Karl-Fischer-Reagent and a colorimeter for direct readout of water content.... | 02/01/1977 |
| 3996001 | Method of and device for the analysis of liquids An improved device and method for liquid storage and analysis. The device comprises a receptacle defining a U-shaped compartment for a first open-ended branch and a second closed branch. A reaction zone in which the liquid will react with a reagent during... | 12/07/1976 |
| 3992153 | Dosimeter for oxides of nitrogen A dosimeter for the determination of integrated exposures to NO, NO2 or exposures to both gases. The dosimeter provides for a convenient and accurate method for the determination of exposures which may be encountered by workers or miners in fie... | 11/16/1976 |
| 3992150 | Method and equipment for speedy preparation of test liquids A cuvet is prepared for test analysis of a substance by placing a predetermined volume of a reagent liquid in a cuvet and then using a pipette or capillary tube for taking up a predetermined volume of the test substance by capillary action. Then the charg... | 11/16/1976 |
| 3986834 | Method for detecting blood urea nitrogen An improved means and method for the determination of blood urea nitrogen in blood serum or plasma. In brief, the means comprises a novel kit, particularly adapted to present a fresh reagent solution of diacetyl, thiosemicarbazide and anhydrous ethylene g... | 10/19/1976 |
| 3966412 | Lewisite detection sampler and method A self-contained sampler for use in the detection of low concentrations of ewisite; i.e., chlorovinyldichlorarsine in air through use of a sensitive colorimetric method.... | 06/29/1976 |
| 3963442 | Colorimetric indicator compositions and method of manufacture Colorimetric indicator compositions and their method of manufacture. A first reagent composition is included in the indicator compositions so that when a second reagent composition is applied to an exposed surface of the indicator compositions a reaction ... | 06/15/1976 |
