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 |
| 6009666 | Door opening and closing mechanism A door opening and closing mechanism, wherein a swinging door to cover an opening for loading, unloading, or exchanging discs comprises two doors, an upper door (14) and a lower door (13), each of which is supported by pivots (14a) and (13a). The opening ... | 01/04/2000 |
| 5918795 | Soldering alloy, cream solder and soldering method The present invention relates to a soldering alloy composed mainly of Sn and free from lead which is a toxic substance. An addition of a small quantity of Ag to the soldering alloy can fine the alloy structure, minimize structural changes of the alloy and... | 07/06/1999 |
| 5612146 | Soft-magnetic multilayer thin film for use in a thin-film magnetic head and a method of manufacturing the same A soft-magnetic multilayer thin film produced by electroplating, wherein an anode-dissolution process is effected by intermittently applying a reverse d.c. bias current with respect to the plating-forward current. Involving the anode-dissolution process a... | 03/18/1997 |
