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 |
| 5608916 | Inserted pocket of a waterproof garment An inserted pocket system for use with a waterproof garment having a face fabric is provided and includes a waterproof bag-shaped pocket insert having a waterproof bag, an inner pocket part located at the backing of the garment face fabric and an outer po... | 03/11/1997 |
| 4866212 | Low dielectric constant reinforced coaxial electric cable A reinforced coaxial electric cable having low dielectric constant and a layer of convoluted dielectric insulation placed between either center conductor and conductive shield, optional porous dielectric and shield, or shield and jacket. FEP convoluted di... | 09/12/1989 |
| 4842553 | Method and assembly for terminating a conductive polymer-shielded coaxial electrical cable A method and assembly for electrically and mechanically terminating a conductive polymer-shielded coaxial electrical cable by wrapping the shield layer of the end of the cable under tension with a conductive metal spring and binding the cable and spring i... | 06/27/1989 |
| 4732629 | Method for manufacturing an insulated conductor having a high cut-through resistance This invention provides a method of increasing the cut-through resistance of a PTFE insulated conductor. Unsintered PTFE is expanded and compressed and then applied to a conductor. The insulated conductor is then heated to a temperature above 345° C. The... | 03/22/1988 |
| 4731502 | Limited bend-radius transmission cable also having controlled twist movement A limited bend transmission cable for coaxial microwave cables which also has controlled movement under torque. A coaxial microwave transmission line of choice is covered by successive layers of helically-wound armor sheath, hard wire located in the groov... | 03/15/1988 |
| 4496045 | Multi-panel folder for surgical sutures An improved package for needled sutures comprising a 3-panel folded paper folder for PTFE (and optionally silk, cotton, and other) sutures wherein the suture is arranged in a sinusoidal configuration within the folder and the needle(s) held firmly in plac... | 01/29/1985 |
| 4478665 | Method for manufacturing highly porous, high strength PTFE articles A method for producing a multi-component, porous PTFE article. Components of PTFE containing a liquid lubricant are placed in intimate contact, dried and then stretched in one or more directions. The PTFE components may optionally contain a filler. The re... | 10/23/1984 |
| 4461529 | Strain relief boot The disclosure relates to a strain relief boot which, when affixed to an electrical cable and connector, will act in a manner that greatly reduces the stresses transmitted from the cable to the electrical contact, thereby preventing wire breakage and will... | 07/24/1984 |
| 4385093 | Multi-component, highly porous, high strength PTFE article and method for manufacturing same A method for producing a multi-component, porous PTFE article. Components of PTFE containing a liquid lubricant are placed in intimate contact, dried and then stretched in one or more directions. The PTFE components may optionally contain a filler. The re... | 05/24/1983 |
| 4379858 | Foamed plastics A melt-molded foamed plastic composition comprised of a tetrafluoroethylene-perfluoroalkyl vinyl ether resin matrix in which is admixed stretched porous fragments of polytetrafluoroethylene.... | 04/12/1983 |
| 4306923 | Method of slitting a plastic jacket of a conductive cable A conductive cable having a conductive core and a protective jacket of plastic material moulded around the core, also contains a guide member, in particular a guide tube, below the jacket and into which a jacket slitting tool can be inserted. By pushing t... | 12/22/1981 |
| 4283448 | Composite polytetrafluoroethylene article and a process for making the same A porous polytetrafluoroethylene (PTFE) article which is made up of a number of smaller articles with a microstructure of nodes interconnected by fibrils, these articles having been joined to one another such that their microstructure is virtually unalter... | 08/11/1981 |
| 4280500 | Tubular flexible medical instrument A tubular flexible medical instrument of polytetrafluoroethylene capable of easy insertion into and extraction from body cavities. The tube has alternate solid portions and porous fibrillated portions in either a ring or spiral mode. Such a tube has suffi... | 07/28/1981 |
| 4256806 | Smudge free graphite coated polymeric substrate and a method for preparing the same A three component mixture of graphite, a liquid and a PTFE fine powder dispersion which has a homogeneous appearance and can be applied onto a substrate to provide a clean, glazed coating that does not easily shed graphite. Suitable substrates include: po... | 03/17/1981 |
| 4218581 | High frequency flat cable A novel flat cable which has a number of parallel spaced conductors with tape segments having a conductive and insulative side woven between them at various positions along the length of the conductors. The weaving generally being done so that the conduct... | 08/19/1980 |
| 4194041 | Waterproof laminate A waterproof article for use in, for example, protective clothing. The article prevents liquid water from penetrating through to undergarments while at the same time permitting moisture vapor such as perspiration to pass out through the article. The artic... | 03/18/1980 |
| 4187390 | Porous products and process therefor This invention provides a tetrafluoroethylene polymer in a porous form which has an amorphous content exceeding about 5% and which has a micro-structure characterized by nodes interconnected by fibrils. The material has high porosity and high strength. It... | 02/05/1980 |
| 4173386 | Coaxial assembly An angled coaxial connector capable of being split into at least two parts in such a manner that the terminal portion of a coaxial cable can be placed between the two of the connector parts spanning the curved portion and termination proximate to the mati... | 11/06/1979 |