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William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 7349158 | Diffraction grating-based encoded micro-particles for multiplexed experiments Microparticles 8 includes an optical substrate 10 having at least one diffraction grating 12 disposed therein. The grating 12 having a plurality of colocated pitches Λ which represent a unique identification digital code that is detected... | 03/25/2008 |
| 7190522 | Chemical synthesis using diffraction grating-based encoded optical elements An optical identification element having a synthesized chemical attached thereto includes an optical substrate having at least one diffraction grating disposed therein, the grating having a resultant refractive variation at a grating location, said grating being emb... | 03/13/2007 |
| 7124955 | Compact or convenient transaction cards Compact or convenient transaction cards comprising protective sleeves for full-sized and smaller-sized cards, cut lines and rotatable means for forming “fanned” cards, rollable cards, collapsible cards, cards having hinges or axes for rotating parts to form full... | 10/24/2006 |
| 7126755 | Method and apparatus for labeling using diffraction grating-based encoded optical identification elements A method and apparatus for labeling an item using diffraction grating-based encoded optical identification elements 8 includes an optical substrate 10 having at least one diffraction grating 12 disposed therein. The grating 12 has one or ... | 10/24/2006 |
| 7106513 | Diffraction grating-based encoded particle An encoded particle 8 includes a particle substrate 10; at least a portion of the substrate having at least one diffraction grating disposed therein, the grating having a resultant refractive index variation at a grating location, the grating being emb... | 09/12/2006 |
| 7092160 | Method of manufacturing of diffraction grating-based optical identification element A method for manufacturing a diffusion grating-based optical identification element is provided. The optical identification element includes a known fiber substrate, having a diffraction grating disposed therein the grating being indicative of a code when exposed to... | 08/15/2006 |
| 6475933 | Highly conductive elastomeric sheet Highly conductive elastomeric sheet. Preferably, the conductive elastomeric sheet comprises a conductive wire mesh loaded into an elastomeric matrix from which is also loaded with a conductive particulate. Preferably, the particulate comprises carbon part... | 11/05/2002 |
| 6258445 | Screen printing form and flexible screen printing form accommodating device The invention relates to a screen printing fabric made of self crossing plastic threads with an emulsion coating, wherein the plastic threads are coated with a vacuum metallized or sputtered encasing layer which is covered by an emulsion bearing metal coa... | 07/10/2001 |
| 6221459 | Controlling the heat expansion of electrical couplings A coupling such as a socket may couple one electronic device to another and may reduce differential thermal expansion between the two coupled devices. For example, a surface mount socket may differentially expand relative to a printed circuit board. By in... | 04/24/2001 |
| 6025283 | Charge card A charge card is described which is made from a rubber or plastic laminate with precious metal forming the upper surface and preferably lower surface. The precious metal layers are adhered to the rubber material by means of a suitable adhesive formulation... | 02/15/2000 |
| 5705258 | Thermal conductive composite silicone rubber sheet The composite silicone rubber sheet comprises a thermal conductive silicone rubber layer, both surfaces of which are tacky, containing a thermal conductive filler such as aluminum oxide and having a Asker C hardness of 5 to 50 and a thickness of 0.4 mm or... | 01/06/1998 |
| 4518648 | Sheet material and production method thereof A sheet material adapted for producing pressure sensitive elements includes an electrically conductive net-shaped member having projecting and recessed portions, and an electrically insulating layer in which the net-shaped member is buried such that only ... | 05/21/1985 |
| 4492728 | Sports ground covering with expanded clay particles The covering has a lower or cushioning layer (1) and an upper or wear-resisting coating (2), between which there is a reinforcing iron netting (3). Both the layers contain rubber chips (4), which are produced from old vehicle tires. The lower layer used f... | 01/08/1985 |
| 4388484 | Oil field mats Oil-resistant resilient mats to protect oil field workers from dangerous, high voltage electrical discharge comprise a first oil-resistant flexible resilient elastomer of extremely high dielectric strength which is usable by itself as a mat and also in co... | 06/14/1983 |
| 4168340 | Reinforcement of resilient articles A woven fabric for reinforcing a resilient material, such as a tire casing, wherein the warp of the fabric consists of substantially unstranded wires held together in spaced groups by the weft of the fabric with at least some of the wires being formed wit... | 09/18/1979 |
| 3968296 | Pressure compensator for heating platen presses A resilient thermally-conductive pressure compensator for use in heating plate presses used to manufacture coated wood panels or boards, comprising a composite sheet consisting of a woven mesh of metal wires embedded in a matrix of a heat conducting elast... | 07/06/1976 |
| 3957091 | Reinforcing fabrics A woven fabric for reinforcing a resilient material such as rubber or a suitable synthetic material wherein the warp of the fabric consists of individual steel filaments held together in warps by the weft of the fabric.... | 05/18/1976 |
