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 |
| 6129256 | Reflow furnace for an electronic assembly The invention provides a reflow furnace for an electronic assembly. The electronic assembly comprises a printed circuit board and a device on the printed circuit board. The printed circuit board has solder at a first area near the device and a metallic su... | 10/10/2000 |
| 5703901 | Calcination furnace A calcination furnace capable of variably setting calcination conditions such as a size of a calcination chamber, a temperature, a temperature distribution and flowing of gas in the calcination chamber; and the like depending on calcined intermediate prod... | 12/30/1997 |
| 5559826 | Calcination furnace A calcination furnace capable of variably setting calcination conditions such as a size of a calcination chamber, a temperature, a temperature distribution and flowing of gas in the calcination chamber; and the like depending on calcined intermediate prod... | 09/24/1996 |
| 5413164 | Heating furnace in combination with electronic circuit modules For use in the fabrication of electronic circuit modules, there is provided a heating furnace which can be arbitrarily set in a desired temperature profile. The furnace includes a plural number of independently controllable heaters located in spaced posit... | 05/09/1995 |
| 5080582 | System for curing epoxy in a fiber optic connector A system is disclosed for curing epoxy in a fiber optic connector. An oven has a receptacle for receiving the connector with an exposed length of an optical fiber projecting therefrom. A heat conductive sheath is positionable on the connector about the op... | 01/14/1992 |
| 4820907 | Controlled furnace heat treatment The present invention is directed to a heat treatment apparatus for performing heat treatment of a substrate. According to the present invention, a thermocouple is introduced into a heating furnace and discharged from the heating furnace by carrier means ... | 04/11/1989 |
| 4775621 | Method of distinguishing invasive E. coli that cause septicemia A method for distinguishing invasive from noninvasive E. coli comprises collecting an undifferentiated bacterial sample from a host, contacting bacteria contained in the sample to a growth medium which contains a dye selectively taken up by invasive E. co... | 10/04/1988 |
| 4676739 | Pre-expander for expandable polymer beads A pre-expander for polymer beads is disclosed which includes a pre-expansion chamber having an agitator therein. The agitator is driven by an electric motor. The power requirements of the motor are monitored to determine the resistance which the beads are... | 06/30/1987 |
| 4486173 | High-temperature, high-pressure workpiece treatment system To permit installation of various sizes of deburring chambers, matched to particular sizes, or combination of sizes of workpieces, so that only the minimum size chamber for the particular quantity or size of workpiece need be used, the chambers are provid... | 12/04/1984 |
