Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 4218335 | Stabilizer for an immunochemical measuring reagent A stabilizer consisting principally of cytochrome c or a thermally modified matter of cytochrome c for maintaining constant over an extended period the sensitivity of measurement and specificity of a measuring reagent on the basis of the immunochemical ag... | 08/19/1980 |
| 4216291 | Thrombosis-test A thrombosis test is based on the presence of specific, newly-found, enzyme-inhibitor complexes (such as plasmin-antiplasmin, plasmin-댒 -macroglobulin, thrombin-antithrombin-III) in blood samples having an activated blood coagulation and... | 08/05/1980 |
| 4212650 | Diagnostic process A process for an in vitro determination of the immunization status of cells of human beings and animals by measuring in an electric field the changed mobility of charged indicator particles which have been treated with a medium of lymphocytes incubated wi... | 07/15/1980 |
| 4211766 | Cancer associated polypeptide antigen compositions A process for the isolation of cancer associated polypeptide antigen mainly by several steps of gel filtration and pH-gradient elution; a cancer associated polypeptide antigen based on a single peptide chain and denaturating irreversibly at pHs exceeding ... | 07/08/1980 |
| 4208185 | Method and apparatus for the measurement of antigens and antibodies A method of the quantitative measurement of antigens and antibodies by reacting antibody- or antigen-sensitized insoluble carrier particles with a corresponding antigen or antibody or a mixture thereof in a sample and irradiating the reaction mixture with... | 06/17/1980 |
| 4202872 | Determination of heparin in blood plasma A test for determining the anti-coagulation level in blood samples is based on ascertaining the presence of heparin-antithrombin-III complex therein. This may be done with the aid of antibodies against thrombin-antithrombin-III complex, such antibodies be... | 05/13/1980 |
| 4202665 | Detection of hepatitis B surface antigen The reversed passive hemagglutination test (RPHA) for the detection of hepatitis B surface antigen (HBs Ag) is improved by the recognition that the speed of movement towards the periphery of a centrifugal field by immunologically aggregated sol... | 05/13/1980 |
| 4200434 | Immunological blood test method A method for immunological blood testing carried out by the use of a coil column, composed of a transparent tube helically wound on a support rod. To carry out the test, the coil column filled with a liquid solution of a polymer compound is, after a dropl... | 04/29/1980 |
| 4195074 | Process for producing a soluble rubella antigen Purified soluble antigen, specific for rubella virus, is isolated from growth media of rubella-infected cell cultures by affinity and gel permeation chromatography and characterized, inter alia, by its specific activity. Antigen-sensitized particles are e... | 03/25/1980 |
| 4193981 | Process for quantitative determination of CAPA antigen or antibody A process for quantitative determination of the amount of antigen in a solution while using hemagglutination inhibition technique, comprising preparing under serial dilution a series of samples of said solution, adding to each of said samples a predetermi... | 03/18/1980 |
| 4193982 | Process for coupling biological substances by covalent bonds A process for coupling biological substances by covalent bonds that involves the use of benzoquinone as cross-linking agent in large excess compared with the substance to be activated. The activation reaction is realized in a homogeneous liquid medium. Th... | 03/18/1980 |
| 4192917 | Process for rosetting human B lymphocytes with Rhesus monkey erythrocyte Human peripheral blood lymphocytes are stimulated with either a polyclonal activator or an antigen which gives rise to immunologically activated B lymphocytes. These activated B lymphocytes are separated from non-activated B lymphocytes by relying on the ... | 03/11/1980 |
| 4180437 | Purification of antiserum for thrombosis test Antiserum which has been generated against an enzyme-inhibitor-complex is purified by immunoprecipitating a freshly generated antiserum with fresh human bloodplasma to form a precipitate and a fluid, and subjecting the fluid to chromatographic separation ... | 12/25/1979 |
| 4176174 | Viral antibody diagnostic test system A diagnostic reagent for detecting the presence of specific microbial antibodies in body fluids which comprises a gel containing intact erythrocytes, which have appropriate microbial particles adhering directly or indirectly to the surface thereof, the ge... | 11/27/1979 |
| 4160019 | Detection of cancer associated polypeptide antigen and preparation of antibodies thereto A process for the isolation of cancer associated polypeptide antigen mainly by several steps of gel filtration and pH-gradient elution; a cancer associated polypeptide antigen based on a single peptide chain and denaturating irreversibly at pHs exceeding ... | 07/03/1979 |
| 4160018 | Stabilized cancer associated polypeptide antigen and preparation thereof A process for the isolation of cancer associated polypeptide antigen mainly by several steps of gel filtration and pH-gradient elution; a cancer associated polypeptide antigen based on a single peptide chain and denaturating irreversibly at pHs exceeding ... | 07/03/1979 |
| 4152410 | Diagnosis reagent for neoplasm and method for diagnosis of neoplasm NEA (Neoplasm embryonic antigen) and NEA antibody; diagnosis reagents for neoplasm comprising a substance selected from the group consisting of NEA antibody, NEA or NEA antibody labelled with a radioactive isotope, a combined product of NEA or NEA antibod... | 05/01/1979 |
| 4148607 | Apparatus and analysis for agglutination reaction Analysis of and apparatus for studying simple or complex agglutination reactions, such as for blood analysis and in particular blood groupings in which the specimen is mixed with at least one reagent in a vessel of predetermined shape and this mixture is ... | 04/10/1979 |
| 4140754 | Hemagglutination-inhibition test for togaviruses The non-specific inhibitors of hemagglutination in a subject serum for hemagglutination-inhibition test for a togavirus such as rubella virus can be inactivated by subjecting the subject serum to the action of phospholipase C. By subjecting thus-treated s... | 02/20/1979 |
| 4139606 | Preparation of antigen and test for heterophil antibody Three antigens, termed HA, MN and FN, are prepared for the serological diagnosis of infectious mononucleosis; the HA antigen being used to identify the heterophil antibodies and the FN and MN antigens are used to differentiate them.... | 02/13/1979 |
| 4138214 | Diagnostic test utilizing human chorionic gonadotropin A simple, sensitive, reliable and safe method and device for detecting pregnancy. The test involves concentration in the presence of polyvinylpyrrolidone by ultrafiltration of a sample of urine or serum from a subject; followed by determining the presence... | 02/06/1979 |
| 4132767 | Preparation of -L antibody, purification of -L antigen and reagent for detection of -L antibody and -L antigen Process for the preparation of a novel -L antibody comprising immunizing an animal other than a human with the -L antigen or -L antigen/-L antibody complex, and collecting antiserum from the animal; a method for the purificatio... | 01/02/1979 |
| 4130634 | Method for detecting and quantifying antigens Method for detecting and quantifying an antigen by contacting with erythrocytes coated with antibody specific to the antigen and reactive therewith, followed by treatment with developer comprising antibody reactive with the antigen and with complement. Ly... | 12/19/1978 |
| 4123510 | Method for the determination of gonadotropins A simple, sensitive, reliable and safe method for determining the concentration of pituitary gonadotropins is disclosed. The method involves concentration by ultrafiltration of a sample of body fluid, e.g. urine or serum from a subject, followed by determ... | 10/31/1978 |
| 4123509 | Pregnancy test A simple, sensitive, reliable and safe method and device for detecting pregnancy is disclosed. The test involves concentration by ultrafiltration of a sample of urine or serum from a subject; followed by determining the presence of human chorionic gonadot... | 10/31/1978 |
| 4100268 | Preparation of gentamicin sensitized particles for agglutination tests Detection of gentamicin is made possible by preparing an analytical body comprising a macromolecule which carries gentamicin, attached to a particle.... | 07/11/1978 |
| 4080264 | Immunoassay by light scattering spectroscopy This inventin provides a means for determining the concentration of any of a wide range of antibody or antigen molecules with a high degree of specificity, accuracy and sensitivity. Antigen or antibody concentration is determined by effecting an agglutina... | 03/21/1978 |
| 4071314 | Processes, reagents and means for early diagnosis of pregnancy A reagent for the early diagnosis of pregnancy comprising a substrate of suitable erythrocytes or polymer having adsorbed thereon a predetermined ratio of chorionic gonadotropin antigen and antisera therefor. The ratio is selected so as to be insensitive ... | 01/31/1978 |
| 4002532 | Enzyme conjugates This invention relates to the provision of enzyme-macromolecule conjugates by conjugation with polyfunctional reagents in the presence of organic compounds which act as conditioners. Conjugation of enzymes with antibodies in the presence of conditioner yi... | 01/11/1977 |
| 3960827 | Cancer associated polypeptide antigen, process for its preparation, process for preparing antibodies, process of cancer diagnosis and composition useful as an immunizing agent A process for the isolation of cancer associated polypeptide antigen mainly by several steps of gel filtration and pH-gradient elution; a cancer associated polypeptide antigen based on a single peptide chain and denaturating irreversibly at pHs exceeding ... | 06/01/1976 |
| 3959456 | Diagnostic slide test for infectious mononucleosis Sheep or horse blood is specially treated to produce an antigen which is readily agglutinable by heterophil type antibodies present in the patient's serum. This antigen possesses properties of stability, sensitivity and agglutinability which are utilized ... | 05/25/1976 |
| 3957435 | Passive hemagglutination test method and composition for use therein An immunological test composition containing a passive hemagglutination indicator and a ferric-specific chelating agent for detecting an antigen or an antibody in a fluid sample such as urine. The test composition applies to both direct hemagglutination a... | 05/18/1976 |
| 3955923 | Serologic reaction method A method for detecting the end point in immunochemical and serodiagnostic tests involving agglutination is described wherein the test is carried out on a curved slide having a curvature sufficient to produce a discernible pattern at the end point.... | 05/11/1976 |
| 3956477 | Method and erythrocyte preparation for reverse blood grouping Disclosed herein is a stable preparation of human erythrocytes for use in reverse blood typing comprising erythrocytes hemolyzed by gradual hypotonic hemolysis using a sequence of aqueous hypotonic buffers to form stroma wherein the stroma cells are in th... | 05/11/1976 |
