Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 5935714 | Magnetic recording medium A magnetic recording medium having good dispersibility, dispersion stability of a magnetic paint and electromagnetic characteristics, and excellent running durability and still characteristics, comprises a non-magnetic support and a magnetic layer formed ... | 08/10/1999 |
| 5792548 | Magnetic recording medium having a magnetic layer and an intermediate layer of specified composition A magnetic recording medium having an intermediate layer excellent in conductivity, surface properties and strength, and excellent in electromagnetic characteristics, physical properties, etc., which comprises a non-magnetic intermediate layer having a th... | 08/11/1998 |
| 5677051 | Magnetic recording medium having a specified plasma polymerized hydrogen containing carbon film and lubricant A magnetic recording medium possessing excellent electromagnetic characteristics, corrosion resistance, durability, abrasion resistance and lubricity, has an undercoat layer, a ferromagnetic metal layer, a protective layer and a lubricating layer formed i... | 10/14/1997 |
| 5674637 | Magnetic recording medium A magnetic recording medium having excellent electromagnetic characteristics, still characteristics and cupping resistance, reduced rust generation and increased durability, comprises a non-magnetic substrate and a magnetic layer formed thereon by oblique... | 10/07/1997 |
| 5581488 | Apparatus and method for compensating for noise in signals Signal compensation apparatus and method compensates for and removes errors due to error factors included in source signals x and y approximated by the sine function and cosine function, respectively, from a measurement apparatus such as a resolver or an ... | 12/03/1996 |
| 5558945 | Magnetic recording medium A magnetic recording medium having excellent electromagnetic characteristics, still characteristics and cupping, decreased rust generation and high durability, includes a non-magnetic substrate and a magnetic layer formed thereon by oblique deposition, th... | 09/24/1996 |
| 5409460 | Intra-luminal expander assembly An intra-luminal expander assembly for use with a catheter comprises an expandable tubular expander element having openings, for example slots, formed in it, and first and second fixation portions located at or towards its ends. The expander element is di... | 04/25/1995 |
| 5407741 | Exothermic conductive coating and heating device incorporating same An exothermic conductive coating comprises carbon particles, a substantial portion being spherical particles having a diameter of not more than 500 μm, and a synthetic resin. A conductive heating unit is obtained by coating or impregnating a desirably-sh... | 04/18/1995 |
| 5378533 | Electrically conductive exothermic composition comprising non-magnetic hollow particles and heating unit made thereof An electrically-conductive fine particle powder comprises fine, hollow spherical particles of non-magnetic material such as glass or resin plated with a metal and having a bulk density of 0.2 to below 0.9 g/cm3. An exothermic electrically-condu... | 01/03/1995 |
| 5344397 | Cholangiogram catheter A balloon catheter including a pumping mechanism for inflating the balloon, an actuator and control wire for deflecting a distal tip of the catheter and a luer connection for passing a guidewire through the catheter. The balloon can be inflated with a pus... | 09/06/1994 |
| 5196254 | Cushioning material A cushioning material is disclosed which includes two laminated films between which a plurality of air tight cells are formed. Each of the films is composed of an intermediate layer formed of an aromatic polyamide resin and two surface layers formed of a ... | 03/23/1993 |
| 5180096 | Method and apparatus for reflow-soldering of printed circuit boards A method and apparatus for reflow-soldering of printed circuit boards are disclosed. A printed circuit board having electronic parts with lead wires having low temperature resistance alone or together with electronic part of high temperature resistance ca... | 01/19/1993 |
| 5122322 | Method of producing composite thermoplastic resin film A composite, thermoplastic resin film includes a matrix in the form of a film, and formed of a first thermoplastic resin and a plurality of substantially continuous tapes dispersed within the matrix film with the plane of each of the tapes being substanti... | 06/16/1992 |
| 5066850 | Soldering apparatus of a reflow type A soldering apparatus of a reflow type contains a preheating chamber and a reflow chamber which are provided with a plurality of heaters for heating printed circuit boards with chips temporarily mounted thereon with solder pastes during conveyance by a co... | 11/19/1991 |
| 5019439 | Thermoplastic resin film matrix with continuous tapes A composite, thermoplastic resin film comprises a matrix in the form of a film and formed of a first thermoplastic resin, and a plurality of substantially continuous tapes dispersed within the matrix film with the plane of each of the tapes being substant... | 05/28/1991 |
| 4994702 | Motor A motor includes a field magnet system comprised of plural permanent magnetic poles arranged in a circle and an armature with plural poles each facing the magnetic poles of the field magnetic system. The widthwise length of a magnetic flux generating area... | 02/19/1991 |
| 4977242 | Ultra fine polymer particle, composite material thereof and methods of preparation thereof A cumulatable ultrafine polymer particle consisting of one molecular chain of the polymer is prepared by spreading a dilute solution of the polymer at the interface between the atmosphere and a subphase solution having a weak affinity for the polymer, and... | 12/11/1990 |
| 4966743 | Process for making ultrathin polymeric imine films Novel ultrathin unit layers and built-up multilayers of polymeric imine are obtained when a spreadable polyfunctional aldehyde or its precursor, particularly the alkyl Schiff base formed by its condensation with an alkyl amine, is spread on the surface of... | 10/30/1990 |
| 4964968 | Magnetron sputtering apparatus A magnetron sputtering apparatus has a target disposed above an inner magnetic pole surrounded by an outer magnetic pole of opposite polarity and a gradient adjusting means mounted underneath the target and interposed between the inner and outer magnetic ... | 10/23/1990 |
| 4961944 | Package for microwave oven cooking and method of use A food package for cooking of the food in a microwave oven is formed of a heat-resistant synthetic resin impermeable to oil and moisture and has at least one opening for allowing steam to escape when the internal pressure in the package is increased beyon... | 10/09/1990 |
| 4938410 | Soldering apparatus of a reflow type A soldering apparatus of the reflow type contains a preheating chamber and a reflow chamber which are provided with a plurality of heaters for heating printed circuit boards with chips temporarily mounted thereon with solder pastes during conveyance by a ... | 07/03/1990 |
| 4915984 | Process for producing graphite films and fibers A process for producing almost perfect graphite films and fibers at lower graphization temperatures wherein a film or fiber of a polymer selected from a defined group is subjected to a preliminary heat treatment at a temperature of 400° to 700° C., unde... | 04/10/1990 |
| 4913334 | Device for correcting warp of printed circuit boards in a carrierless soldering apparatus A device for correcting warp of printed circuit boards in carrierless soldering apparatus wherein the printed circuit boards are soldered while being held by holding claws of a conveying means is disclosed, which comprises a sliding means involving a sing... | 04/03/1990 |
| 4889273 | Soldering apparatus A soldering apparatus capable of forming a flowing layer of a molten solder with which an article to be soldered is contacted and the height of the upper surface of which is automatically controlled between predetermined upper and lower levels by continuo... | 12/26/1989 |
| 4876437 | Soldering apparatus A soldering apparatus of a type in which printed circuit boards having temporarily mounted thereon chip parts with solder paste are heated within a heating chamber to cause the solder paste to reflow. The heating chamber is partitioned into preheating cha... | 10/24/1989 |
| 4876077 | Process for producing graphite A process for producing graphite includes heat treating, in an inert gas or in vacuo, at least one polymer selected from the group consisting of a polyphenyleneoxadiazole, polybenzothiazoles, a polybenzobisthiazole, a polybenzoxazole, a polybenzobisoxazol... | 10/24/1989 |
| 4874081 | Device for transferring printed circuit board A printed circuit board transferring device is disclosed which includes a pair of endless roller chains defining a printed circuit board transferring path therebetween, a plurality of support members fixed to the chains for movement therewith and each ada... | 10/17/1989 |
| 4873292 | Antithrombogenic synthetic polymer and process for its preparation An antithrombogenic synthetic polymer has repeat structural units represented by the following structural formula consisting of portions I and II: ##STR1## a microdomain structure composed of crystalline phases and amorphous phases, each phase h... | 10/10/1989 |
| 4863550 | Alignment hole forming device for film laminating apparatus In a laminating apparatus wherein a predetermined length of a film cut from a continuous web is laminated onto a substrate having positioning holes, a method for forming alignment or indexing holes in the film which correspond with the positioning holes i... | 09/05/1989 |
| 4857384 | Exothermic conducting paste Disclosed are an exothermic conducting paste mainly comprising a synthetic resin and a heat stable metal oxide which is positive in temperature coefficient of electric resistance and has an electric specific resistance of not more than 5×103 Î... | 08/15/1989 |
| 4852374 | Electrical shock-preventable key unit An electrical shock-preventable key unit has a case for slidably accommodating a key body, a slide plate and an electrical shock preventing system. The slide plate engages with the key body and slides reciprocally to position it in the extended position o... | 08/01/1989 |
| 4848642 | Soldering apparatus An apparatus for soldering printed circuit boards moving along a predetermined path of travel, comprises an upwardly extending nozzle member having an opening at its top end from which molten solder is caused to overflow to form an overflowing molten sold... | 07/18/1989 |
| 4843365 | Magnetoresistance element A magnetoresistance element comprises one or more magnetoresistors whose resistances are varied with the change in magnitude of the magnetic field produced by a multipolar magnet disposed on a moving object. The magnetoresistors are provided adjacent to t... | 06/27/1989 |
| 4842560 | Wave powered propulsion system for watercraft A watercraft is provided with a propulsion system having a hydraulic power plant driving a propeller through a transmission. The power to operate hydraulic pumps in the power plant is derived from wave motion by buoyant members connected to the power plan... | 06/27/1989 |
| 4839463 | Ultra fine polymer particle and composite material of preparation for methods A cumulatable ultrafine polymer particle consisting of one molecular chain of the polymer is prepared by spreading a dilute solution of the polymer at the interface between the atmosphere and a subphase solution having a weak affinity for the polymer, and... | 06/13/1989 |
| 4824076 | Cable winch with kicker bar A cable winch having a pair of cable-gripping assemblies movably mounted on a support member adapted to be secured to a fixed point. An operating handle is pivoted to the support member, and linkages interconnect the handle with each of the assemblies to ... | 04/25/1989 |
| 4818593 | Ultrathin heteroaromatic polymer films and process for making the same Unit layer polyheteroaromatic films of thickness less than 50 nm are obtained when an aldehyde monomer or aldehyde monomer precursor is spread onto an aqueous subphase containing an aromatic amine monomer, said aromatic amine monomer possessing amine or g... | 04/04/1989 |
| 4806293 | Method of producing a foamed, molded article Method of producing a molded article of a foamed thermoplastic resin. A molten mass of an expandable thermoplastic resin is accumulated in an accumulator while it is prevented from foaming. A predetermined quantity of the accumulated thermoplastic resin i... | 02/21/1989 |
| 4796542 | Security lock for revolving door A lock for a revolving door includes an electrically-controlled, solenoid-extensible trip rod engageable by a panel of the door. Movement of the rod by the door panel rotates a key from a lock holder to release a spring-biased locking element which is for... | 01/10/1989 |
| 4790895 | Laminater A laminater for laminating a film cut to a predetermined length onto a substrate with positioning holes has a punching device for forming alignment holes in the film which correspond to the positioning holes in the substrate. The punching device is dispos... | 12/13/1988 |
