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 |
| 7325300 | Method of manufacturing printed wiring boards In a heat and press stage of manufacturing printed wiring boards, a functional surface layer having release property is provided on a surface of a cushion, and a blocking layer is prepared between the functional surface layer and an inner layer having cushion proper... | 02/05/2008 |
| 7216719 | Field weldable connections An apparatus includes a weld coupling and a thermal insulator. The weld coupling is adapted to be welded to an outer housing of a first cable segment to couple the first cable segment to a second cable segment. The thermal insulator is adapted to prevent thermal dam... | 05/15/2007 |
| 7015396 | Insulation material for electrical machines The present invention improves the heat resistance and strength of insulation material inserted between a core and a coil of an electrical machine. A slot liner is placed between a core of an electric motor of an electric machine and a conductor of a coil. The slot ... | 03/21/2006 |
| 6886638 | Field weldable connections The present invention provides a field weldable connection. ... | 05/03/2005 |
| 6060162 | Pulsed voltage surge resistant magnet wire A pulsed voltage surge resistant magnet wire comprising a conductor, a continuous and concentric and flexible uniform coat of base insulation material superimposed on the conductor. An essentially continuous and concentric and uniform pulsed voltage surge... | 05/09/2000 |
| 5989702 | Sandwich insulation for increased corona resistance A sandwich type insulation for electrical machinery comprising a laminate of a polymeric material such as polyimide which contains particles of an inorganic corona resistant material, said polymeric material being bonded to mica paper consisting of mica, ... | 11/23/1999 |
| 5562985 | Communication line material The invention relates to coating composition, coated articles of manufacture, and to the formation of the coated articles. The coating is an energy-beam set resin containing fluid containing heat-expandable, fluid-encapsulating hollow spheres in the resin... | 10/08/1996 |
| 5532434 | Insulated wire An insulated wire having a conductor coated with insulating material wherein a light absorbing layer is provided between the conductor and the insulating material, thereby an insulating coating can be easily peeled off by means of laser.... | 07/02/1996 |
| 5441813 | Communication line material The invention relates to coating composition, coated articles of manufacture, and to the formation of the coated articles. The coating is an energy-beam set resin containing fluid containing heat- expandable, fluid-encapsulating hollow spheres in the resi... | 08/15/1995 |
| 5416373 | Electrically insulated coils and a method of manufacturing thereof Electrically insulated coils having excellent moisture resistance or water resistance utilize a simple material that is readily available. Using a simple method of manufacture, rotating electric machines such as motors for driving pumps, traction motors f... | 05/16/1995 |
| 5219658 | Self-bonding insulated wire and coils formed therefrom A self-bonding insulated wire and a coil formed therefrom are disclosed, which wire comprising a first fusion-bonding film comprising a polyhydroxyether resin having a glass transition temperature of not lower than 90° C. provided on an insulating film o... | 06/15/1993 |
| 5212218 | Hydrophobic, erodiable synthetic resin composition for electrical insulators Improved synthetic resin insulators having enhanced arc track resistance and reduced UV light degradation characteristics are provided which include a continuous resin phase and a discrete, discontinuous hydrophobic phase in the form of discrete, suspende... | 05/18/1993 |
| 4787703 | Cable containing epoxy-modified encapsulation composition Epoxy-grafted, low molecular weight amorphous polymer compositions are employed in pourable, liquid telecommunication cable encapsulation compositions. Also disclosed is a method for encapsulating telecommunication cables as well as cables encapsulated wi... | 11/29/1988 |
| 4761336 | Powder coatable epoxy composition and post-tensioning cable coated therewith Thermosetting powder coatings are provided which comprise a high epoxide equivalent weight epoxy resin or mixture of epoxy resins, a cure catalyst for the epoxy resin, an acrylic resin and a polyamide resin. These powder coatings are useful for forming co... | 08/02/1988 |
| 4552907 | Epoxy resin composition Epoxy resin compositions including an epoxy resin, a hardener and an additive containing a rust preventing film forming component are provided. The additive is lanolin and/or a lanolin derivative. Optionally, the composition also includes a secondary addi... | 11/12/1985 |
| 4454197 | Electrical conductor coated with a water-borne hermetic varnish A hydrolytically stable heat curable composition useful as a hermetic varnish for electrical conductors is provided. It consists essentially of an aqueous solution of (1) an epoxy adduct which is the reaction product of (A) a glycidyl ether of a dihydric ... | 06/12/1984 |
| 4447472 | Magnet wire coating method and article A method of improving the physical and electrical properties of polymer insulation coated electrical conductors is described. A non-ionic surfactant added to an organic solvent solution of insulation polymer followed by coating the solution on the wire, d... | 05/08/1984 |
| 4447797 | Insulated conductor having adhesive overcoat Disclosed is a conductor coated with a fused and cured powder applied insulating coating over which is a coating of an ultraviolet B-stageable, thermally C-stageable liquid resin. The coating is cured to the B-stage and strands of the conductor are placed... | 05/08/1984 |
| 4415629 | Insulated conductor Disclosed is a method of making an insulated conductor by coating a conductor with a triazole and applying the insulation over the triazole coating. The triazole is preferably benzyltriazole or tolyltriazole. It can be applied dissolving the triazole in w... | 11/15/1983 |
| 4405687 | Polyborosiloxane composition for production of electrically insulating layer and insulated electric wire using the composition A polyborosiloxane composition to be used for the formation of an insulating layer on an electric conductor comprises (A) a polyborosiloxane produced by the reaction of boric acid, a boric acid derivative, or a halogenated boron with a silane compound and... | 09/20/1983 |
| 4399064 | Anti-tracking high voltage insulating materials Tracking is reduced in insulators comprising one or more polymers and an anti-tracking filler system comprising (a) a hydrate of alumina having a specific surface area of at least 2 m2 /g measured by the BET method, and (b) a compound selected ... | 08/16/1983 |
| 4362263 | Solderable solventless UV curable enamel A solderable solventless UV curable enamel is disclosed which comprises a totally saturated compound having at least two rings each containing an epoxy group and a UV curative which generates a cation in the presence of UV light. The enamel contains no Le... | 12/07/1982 |
| 4280015 | High-tension line An encased gas-insulated high-tension line is disclosed especially for regions of the line where disturbing arcs can occur so as to melt a grounding casing of the line. A heat and pressure resistant insulative layer prevents an escape of hot and possibly ... | 07/21/1981 |
| 4277534 | Electrical insulating composition comprising an epoxy resin, a phenolic resin and a polyvinyl acetal resin in combination An electrically insulating wire coating material comprises the reaction product of a mixture of polyvinyl acetal, phenol aldehyde resin and epoxy resin in a particular range of proportions. The mixture is formed into a powder for applying to a wire withou... | 07/07/1981 |
| 4269894 | Electric windings and production thereof characterized by the use of a condensation type silicon resin for combination with an addition type silicon resin Electric windings comprising an electric conductor and a plurality of cured insulating layers wrapping around the conductor, said cured insulating layers being obtained by bonding two or more insulating materials with a binder solution containing a mixtur... | 05/26/1981 |
| 4254071 | Method of preparing electrostatic coating compositions containing an epoxy resin Insulating coating compositions for electrical wire are prepared by a method which includes a dehydration process to prevent any reaction from occurring between adsorbed moisture and the catalyst before the coating is electrostatically applied to the tran... | 03/03/1981 |
| 4238641 | Composite epoxy glass-microsphere-dielectrics for electronic coaxial structures A composite epoxy/glass-microsphere-dielectric for hermetic R.F. connectors and coaxial cables is provided. A material which is a composition of moisture resistant epoxy resin, curing agent, glass microspheres, and silane coupling agent provide a low diel... | 12/09/1980 |
| 4237149 | Method of manufacturing molded and impregnated parts For manufacturing molded and impregnated parts from epoxy resin compositions, a reactive epoxy resin is employed which hardens more slowly at higher temperatures (120° to 180° C.) than at lower temperatures (80° to 110° C.). The reactive epoxy resin ... | 12/02/1980 |
| 4222802 | Process for producing electric windings Electric machine windings produced by wrapping a composite insulating material around an electrical conductor, said composite insulating material having been prepared by bonding two or more insulating materials with a silicone resin containing hydroxyl gr... | 09/16/1980 |
| 4223071 | High voltage insulating compositions containing phosphorus compounds New high voltage insulating compositions are disclosed. The compositions comprise a polymer (e.g. a polysiloxane, epoxide resin or a polymer of one or more olefins or substituted olefins), an antitracking additive (e.g. an alumina hydrate), and certain ph... | 09/16/1980 |
| 4219607 | High voltage insulating compositions containing phosphorus compounds New high voltage insulating compositions are disclosed. The compositions comprise a polymer (e.g. a polysiloxane, epoxide resin or a polymer of one or more olefins or substituted olefins), an antitracking additive (e.g. an alumina hydrate), and certain ph... | 08/26/1980 |
| 4206066 | High impact - arc track and weather resistant polymer insulator and composition including epoxidized castor oil An arc track resistant, high voltage, filled synthetic resin insulator is disclosed which exhibits a wide range of desirable qualities heretofore unobtainable with any single type of prior insulator. The insulator hereof unexpectedly gives excellent arc t... | 06/03/1980 |
| 4157975 | Electrical insulators having increased resistance to partial discharges The invention relates to electrical insulators having increased resistance to partial discharges and electrical equipment comprising such electrical insulators. These electrical insulators are formed of a macromolecular material in which is incorporated a... | 06/12/1979 |
| 4127695 | Method of insulating electromagnetic coils There is provided a method of insulating electromagnetic coils comprising coating an electromagnetic coil with epoxy resin containing a cross linking agent consisting essentially of an acid anhydride, said coil having a bonding layer consisting of epoxy r... | 11/28/1978 |
| 4088809 | Low dissipation factor electrostatic epoxy wire coating powder A coating powder is made by hot melt mixing a composition of three diglycidyl ethers of bisphenol A, a pre-prepared epoxy ester, and a curing agent containing trimellitic anhydride. The composition is cooled to form a solid which is ground into a powder. ... | 05/09/1978 |
| 4085250 | Resin rich epoxide-mica flexible high voltage insulation A flexible mica sheet is made by: (A) mixing solid and liquid epoxide resin in a dual solvent system, (B) adding an organo-titanate catalyst, and mixing to form a homogeneous admixture, (C) applying the admixture to a sheet material comprising mica, so th... | 04/18/1978 |
| 4072795 | Thin film electrostatic epoxy powder coating process and the resulting article A coating powder is made by preparing a composition of two different diglycidyl ethers of bisphenol A and a curing agent, extruding the composition, cooling it to form a solid, and grinding the solid into a powder. Wire or other articles are coated with t... | 02/07/1978 |
| 4033805 | Method for manufacturing an insulated electric coil A compound mica sheet is prepared by bonding a mica sheet to a woven fabric through a powdered epoxy resin with curing agent. The mica sheet holds a cured thermosetting resin composition impregnated therein and has an uncured epoxy resin composition inclu... | 07/05/1977 |
| 4026862 | Carboxylic acid storage stabilizers for latent catalyst cured epoxy resins A resinous composition, suitable for insulating electrical members, is made from a mixture containing about 100 parts of an epoxy resin, about 55 to 165 parts of an acid anhydride, an effective amount of a latent catalyst and about 1 to 20 parts of a carb... | 05/31/1977 |
| 3979355 | Arsonium latent catalysts for curing epoxy resins A resinous composition, suitable for insulating electrical members, is made from a mixture containing about 100 parts of an epoxy resin, about 55 to 165 parts of an acid anhydride and about 0.04 to 0.5 parts of a quaternary organic arsonium compound actin... | 09/07/1976 |
