Famous Patents
The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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| Number | Title | Issue Date |
| 4378458 | Novel chromogenic and/or fluorogenic substrates for monitoring catalytic or enzymatic activity Novel substrates for monitoring of catalytic activity resulting in hydrolytic release of products which can be readily detected by spectrophotometric or fluorometric means are provided. The substrates have the general formula: ##STR1## wherein B... | 03/29/1983 |
| 4378428 | Method for carrying out non-isotopic immunoassays, labeled analytes and kits for use in such assays A highly sensitive, immunoassay method for determining the amount of an analyte in a sample containing a known analyte in an unknown concentration is provided. Sample; a polypeptide-labeled analog of the analyte, an antibody specific for said analyte, a p... | 03/29/1983 |
| 4372175 | Automatic pipettor employing an adjustable volume delivery pump Pipettor apparatus for dispensing accurate and precise amounts of liquid employs a first pump having a delivery capacity sufficient to handle substantially all of the liquid to be dispersed and a second pump whose delivery capacity is adjustable and only ... | 02/08/1983 |
| 4344768 | Automatic pipettor Pipettor apparatus for automatically and rapidly transferring accurate and precise multiple quantities of samples (e.g., blood serum) and reagent to the rotatable transfer disc of a centrifugal analyzer.... | 08/17/1982 |
| 4326060 | Process for preparation of folic acid derivatives Folic acid derivatives, such as radiolabeled pteroyltyrosine, are conveniently synthesized from either pteroic acid or by the direct condensation of 6-formylpterin with p-aminobenzoyltyrosine methyl ester. The radioiodinated derivatives are particularly u... | 04/20/1982 |
| 4314988 | Folic acid derivatives and process for preparation Folic acid derivatives, such as radiolabeled pteroyltyrosine, are conveniently synthesized from either pteroic acid or by the direct condensation of 6-formylpterin with p-aminobenzoyltyrosine methyl ester. The radioiodinated derivatives are particularly u... | 02/09/1982 |
