The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
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| Number | Title | Issue Date |
| D608266 | Side discharge muffler | 01/19/2010 |
| 7612988 | Switchgear with movable user interface module A switchgear installation has a cubicle with a door to provide access thereinto, and a low voltage circuit breaker is mounted therein and accessible through the door. Coupled to the circuit breaker is a logic module, and a portable user interface module is releasabl... | 11/03/2009 |
| D600459 | Motorcycle storage box and backrest | 09/22/2009 |
| 7055250 | Machine tool for cutting plate and sandwich panels A machine for cutting plate-shaped workpieces, incorporates a tool guide (7), an operating handle (13), and a cutting tool (6) which revolves along the tool guide (7). By moving the operating handle (13), the tool guide (7) ... | 06/06/2006 |
| 6971714 | Motorcycle seat with convertible backrest A convertible motorcycle seat includes a backrest hinge assembly having a base plate secured to the rear portion of the platform, and an elongated pivotable arm having transversely spaced depending ears, a pivot member extending transversely of, and journalled in up... | 12/06/2005 |
| 6923103 | Machine for the continuous multi-stroke slotting of plate-shaped workpieces A machine for the multi-stroke, continuous slotting of plate-shaped workpieces and especially sheet metal plates is described. A slotting tool (16) and the workpiece are movable in a forward direction relative to each other in a gate-cutting function and in a... | 08/02/2005 |
| 6761089 | Tool for removing screws with damaged heads A double-ended hexagonal shank tool bit for extracting Phillips head or similar screws with damaged heads. One end of the tool shapes the screw head recess to a flared opening. The other end of the tool is tapered with left-hand screw threads and diametrically oppos... | 07/13/2004 |
| 5524726 | Swing arm supported electrical drive assembly for powering cycles An electrically powered cycle has a frame, an axle, a drive wheel, an electric motor, a motor controller, an electric power supply, a power supply charger, and a swing arm pivotally mounts the electric power supply and electric motor on the cycle frame. T... | 06/11/1996 |
| 4250006 | Polymerizable coating composition containing polymerizable epoxide compound and vinyl chloride dispersion polymer and method of coating utilizing same and coated articles produced thereby A polymerizable coating composition comprises 35-80 parts of an epoxy prepolymer material and 20-65 parts of a vinyl chloride dispersion polymer together with 0.5-10 percent by weight, based upon the weight of the epoxy prepolymer material, of an onium sa... | 02/10/1981 |
| 4250203 | Cationically polymerizable compositions containing sulfonium salt photoinitiators and odor suppressants and method of polymerization using same Photopolymerizable compositions using sulfonium salt photoinitiators to effect polymerization of cationically polymerizable monomers as essentially the sole polymerizable material additionally include an organic sulfur compound scavenger to reduce or elim... | 02/10/1981 |
| 4247473 | Method for producing bis-[4-(diphenylsulfonio)pheny] sulfide bis-M.X6 photoinitiator A highly effective photoinitiator for cationic polymerization of monomer formulations is prepared by reacting diphenyl sulfide with chlorine gas in a Friedel-Crafts reaction in an organic solvent to form bis-[4-(diphenylsulfonio)phenyl] sulfide dichloride... | 01/27/1981 |
| 4247472 | Method for producing bis-[4-(diphenylsulfonic)phenyl]sulfide bis-MF6 photoinitiator A highly effective photoinitiator for cationic polymerization of monomer formulations is prepared by reacting bis-[4-(diphenylsulfonio)phenyl] sulfide bis-halide wherein halide is chloride or bromide in an aqueous solution with a compound having the formu... | 01/27/1981 |
| 4246298 | Rapid curing of epoxy resin coating compositions by combination of photoinitiation and controlled heat application A method for the high speed coating of various substrates utilizes an epoxy composition containing a radiation-sensitive catalyst precursor which will decompose upon exposure to electromagnetic radiation to provide a Lewis acid effective to induce cationi... | 01/20/1981 |
| 4197174 | Method for producing bis-[4-(diphenylsulfonio) phenyl] sulfide bis-MX6 A highly effective photoinitiator for cationic polymerization of monomer formulations is prepared by reacting diphenyl sulfide with chlorine gas in a Friedel-Crafts reaction in an organic solvent to form bis-[4-(diphenylsulfonio)phenyl] sulfide dichloride... | 04/08/1980 |