Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7288219 | Method and apparatus for size measurement of particles of carbon black Improvements to the electrical sensing zone instrument are described that allow the good accuracy of this type of instrument to be applied to the measurement of the size of particles of carbon black. The improvements include a concentrated aqueous electrolyte contai... | 10/30/2007 |
| 6774616 | System for detecting fluids in a microfluidic component A system for detecting fluids in a microfluidic component having at least one microchannel including a limitation wall which has two surfaces which, facing the microchannel in a transparent area, are inclined towards each other at an acute angle, with the system fur... | 08/10/2004 |
| 6320367 | Device for analyzing a single pulse with variable step The present invention relates to a device for analyzing a single electrical pulse, which device comprises an electrical circuit made up of a propagation line, including, in uniformly-distributed manner, optoelectronic switches constituted by photoconducto... | 11/20/2001 |
| 5570175 | Method for determination of degree of molecular dissociation in plasma using combined electrostatic measurement and emission spectroscopy A new method is described that allows determination of the degree of molecular dissociation based on continuous, radio frequency (rf) and microwave driven discharges based on electrostatic probe and emission spectroscopy measurements only. Using this meth... | 10/29/1996 |
| 5191292 | Method of making a sensor cable A sensor cable for detecting the presence of electrically conductive liquids, e.g. water. The cable has decreased sensitivity to contamination and condensation than conventional cables which are covered by braids. First and second elongate conductors are ... | 03/02/1993 |
| 4916386 | Microwave wattage indicator A microwave oven wattage detector having a visually and microwave transparent container holding a thermally homogeneous fluid having a wattage-indicating strip contained in the fluid with a plurality of different temperature-sensitive areas on the strip w... | 04/10/1990 |
| 4112361 | Liquid crystal applied voltmeter A liquid crystal applied voltmeter in which a nematic liquid crystal is filled between a pair of light transmitting electrodes at both sides of which polaroidal plates are provided and at least one of the light transmitting electrodes comprises an electri... | 09/05/1978 |
