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 |
| 5613994 | Electric furnace for melting glass The device for melting glass includes a compartment 1 for melting with a discharge throat 11 defined on top by a mobile carrier 16 having an upper part 18 extending upward above the level of glass and a lower part 17 intended to be totally immersed in the... | 03/25/1997 |
| 5002600 | Conduit for molten glass A plurality of conduit segments contact on another which run vertically and transversely to the direction in which molten glass is channelled. Each segment includes at least one trough section and at least one cover section, an insulation of individual fo... | 03/26/1991 |
| 4897103 | Conduit for molten glass A conduit for conducting molten glass in a glass making operation comprising an elongate superstructure, an elongate carriage, a plurality of refractory blocks assembled on the carriage to form a channel for conducting molten glass, and a plurality of rol... | 01/30/1990 |
| 4738707 | Apparatus for supplying molten glass and method of fabricating same A channel made from refractory elements is fabricated without gaps or expansion joints between the refractory elements by supporting the channel upon a movable carriage to accommodate the lengthwise expansion of the channel as the temperature of the chann... | 04/19/1988 |
| 4732601 | Apparatuses for producing plate glasses An apparatus for producing a plate glass which comprises (A) a melter for storing a molten glass material, (B) a molding portion for molding the molten glass material from the melter into a plate, (C) a temperature adjusting tank located between the melter and the ... | 03/22/1988 |
| 4549895 | Method and apparatus for melting glass A glass melting apparatus is provided with a melting tank, a refining tank and a working tank wherein the melting tank is operatively connected to the refining tank by a temperature control connecting pipe for intermittently supplying molten glass from th... | 10/29/1985 |
| 4349376 | Liquid cooled skimmer A skimmer for use in a throat of a melting furnace. The skimmer comprises a plate having a plurality of passages therein with the passages being through the plate from a first side to a second side. Adjacent passages are in communication with each other t... | 09/14/1982 |
| 4317669 | Glass melting furnace having a submerged weir A continuous tank-type glass melting furnace containing a bath of molten glass and having a waist section of reduced width whereat a submerged weir extends across the path of the molten glass bath flowing therethrough. The weir is located adjacent the flo... | 03/02/1982 |
