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| Number | Title | Issue Date |
| 4955164 | Method and apparatus for drilling small diameter holes in fragile material with high velocity liquid jet An abrasivejet drilling system is disclosed for drilling small diameter holes in fragile materials of the type which tend to crack when impacted by such jets. The system employs a drilling jet formed from a high pressure liquid whose pressurization varies... | 09/11/1990 |
| 4950279 | Acupuncture delivery system An acupuncture needle delivery system is disclosed comprising a needle with an upper head portion that is wider in the middle than at its ends. The needle is packaged within a plastic dispensing tube which is greater in diameter than the needle, except at... | 08/21/1990 |
| 4946538 | Precision apparatus for placing filaments A drum is rotatably mounted next to a tool. Resin-preimpregnated filament tows are independently fed to the drum, through several collimating guides positioned along the drum. The drum operates reciprocally: when it rotates in one direction, segments of t... | 08/07/1990 |
| 4938481 | Incrementally advancing toy apparatus The illustrated action toy apparatus comprises an incrementally advancing catcher unit that may be in the form of an animated character such as a shark. The unit moves along a succession of areas of a path. Objects which may represent fish or the like are... | 07/03/1990 |
| 4935647 | Group III - V semiconductor devices with improved switching speeds To decrease the time required to charge parasitic capacitances, and to thereby increase the maximum permissible switching frequency to which a logic circuit can respond, a GaAs device is disclosed having a current-injecting circuit that generates an initi... | 06/19/1990 |
| 4934111 | Apparatus for piercing brittle materials with high velocity abrasive-laden waterjets An abrasivejet system for cutting brittle materials is disclosed. One feature of the disclosed system is a jet-producing nozzle assembly which includes means for inducing turbulence in the jet-forming liquid during the period in which the jet initially im... | 06/19/1990 |
| 4931361 | Cryoprotective reagents in freeze-drying membranes The ability of phosphoglyceride-containing membranes to withstand the disruptive effects of freezing, thawing, or freeze-drying is enhanced when treated with (a) a compound of the formula R-X-R1, wherein R is a lipid or lipophilic anchor, X is ... | 06/05/1990 |
| 4929065 | Glass plate fusion for macro-gradient refractive index materials A glass block (10) comprises a plurality of intermediate glass plates (12i) stacked between a top plate (12t) and a bottom plate (12b). The top and bottom plate each have a selected composition, with a particular index of refraction and a softening temper... | 05/29/1990 |
| 4927629 | Relaxation of smooth vascular muscle Certain substances are provided which have the ability to relax smooth vascular muscle, having an endothelial lining, when administered in vitro or by intravenous injection. Examples of useful substances which are pharmaceutically-acceptable include phosp... | 05/22/1990 |
| 4919191 | Molten-metal forming method and apparatus which are bottom-loading, bottom-pouring and bottom-unloading The bottom of a solid metal charge melts to fill a form below the charge. During melting, usually, the metal that enters the form remains continuous with an unused solid part of the charge. After cooling, the formed metal is removed together with the unus... | 04/24/1990 |
| 4919151 | Synthetic polymer for endocapsular lens replacement A synthetic polymer (24) is provided for endocapsular lens (18) replacement in an eye (10). The polymer, whch is injected into the lens capsule (16) after removal of the lens, comprises an oxygen-stabilized photosensitive prepolymer. An example of such a ... | 04/24/1990 |
| 4915951 | Cryoprotective reagent Compositions for cryopreservation of phosphoglyceride-containing biological and synthetic membranes are provided in which a lipophilic anchor molecule is modified by the attachment of a preferably carbohydrate moiety placed at a predetermined, variable di... | 04/10/1990 |
| 4905065 | High density dram trench capacitor isolation employing double epitaxial layers A new double-epitaxial structure for isolating deep (>5 μm) trench capacitors (10, 10') with 1 μm or less spacing (S) is disclosed. The structure comprises a thin, lightly doped upper epitaxial layer (16) on top of a thicker and more heavily doped botto... | 02/27/1990 |
| 4903101 | Tunable quantum well infrared detector A novel infrared detector (20, 20', 20"), is provided, which is characterized by photon-assisted resonant tunneling between adjacent quantum wells (22a, 22b) separated by barrier layers (28) in an intrinsic semiconductor layer (24) formed on an n+ | 02/20/1990 |
| 4902307 | Synthesis of SiO2 membrane on porous support and method of use of same A method for lining a porous tube (5) with a film (11) of SiO2 is described. The treated tube may be used to separate hydrogen from reaction mixtures such as those resulting from the water-gas shift reaction or the catalytic decomposition of hy... | 02/20/1990 |
| 4897892 | Golf club grip cleaner A golf club grip cleaner (10) is provided, which comprises (a) a cleaning housing (12) provided with a rotatably mounted cleaning tubular chamber (22) sealed at its bottom end with a cap (30), the tubular means provided with a plurality of cleaning brushe... | 02/06/1990 |
| 4884123 | Contact plug and interconnect employing a barrier lining and a backfilled conductor material A stable, low resistance contact is formed in a contact hole (16) through an insulating layer (14), e.g., silicon dioxide, formed on a surface of a semiconductor substrate (12), e.g., silicon, to a portion of a doped region (10) in said semiconductor surf... | 11/28/1989 |
| 4883851 | Ring opening metathesis polymerization of strained cyclic ethers A process is provided for the polymerization of 7-oxanorbornene and its derivatives. The process involves the ring opening metathesis of 7-oxanorbornene and its derivatives, preferably using water as the solvent. Such materials may be homopolymerized or, ... | 11/28/1989 |
| 4883522 | Fabrication of macro-gradient optical density transmissive light concentrators, lenses and compound lenses of large geometry Gradient optical density transmissive light directing devices (24, 26, 28, 30) and fabrication thereof are disclosed herein. Examples of such devices include concentrators, lenses and compound lenses. The present invention teaches a process for the fabric... | 11/28/1989 |
| 4880229 | Weight plate for exercise device A weight plate for use with a barbell type exercise device wherein the plate is coupled to the apparatus' lifting bar for rotation during the exercise movement, which rotation is ultimately blocked by a leverage bar coupled to the plate for rotation there... | 11/14/1989 |
| 4877292 | Improved unitary disposable chair with comfort-contoured inner reinforcement This chair folds flat for storage and shipment, or unfolds and sets up for use, in only a few (e.g., three to five) seconds. Even though it is strong and stable, the chair can be made from one simple blank of five rectangular panels, two smaller panels an... | 10/31/1989 |
| 4877038 | Hand and arm restraint A hand and arm restraint (10) is provided for use with victims for Alzheimer's disease and other non-violent patients (13). The restraint has a pouch member (12) which is large enough to receive the hands, lower arms and at least a portion of the upper ar... | 10/31/1989 |
| 4864780 | Energy-dissipating receptacle for high velocity fluid jets A jet-dissipating container for use with a fluid jet cutting system is disclosed of the type which holds a plurality of jet-dissipating suspensoids. The container includes a suspensoid-enfolding mesh of material. At least most of the suspensoids have exte... | 09/12/1989 |
| 4863881 | Shock consolidation of cubic boron nitride with whiskers of silicon compounds Cubic boron nitride (C--BN) powders admixed with silicon carbide whisker (SCW) or silicon nitride whisker (SKW) may be shock-compacted to pressures of about 17 to 24 GPa. Good consolidation is achieved with 4 to 8 μm particle size C--BN powder admixed wi... | 09/05/1989 |
| 4858967 | High pressure hose fitting and method for sealing high pressure hoses to fittings A high pressure hose fitting, and method for sealing the hose to a fitting, is disclosed for use with hoses of the type including a linear disposed about an axially extending passageway, and a reinforcement layer circumventing the liner. The liner is pref... | 08/22/1989 |
| 4857976 | Hydrogen-stabilized semiconductor devices Semiconductor devices, such as silicon-base MOS devices (10) and solar cells (50), degrade as a result of a variety of reasons, such as hot carriers, photons, and ionizing radiations. Degradation in such devices is cured by the presence of atomic hydrogen... | 08/15/1989 |
| 4852800 | Method and apparatus for stablizing flow to sharp edges orifices A method and apparatus for stablizing flow to sharp edged orifices by placing a convergent section upstream of the orifice.... | 08/01/1989 |
| 4849191 | Economical, safe, unsupervised method for in-vessel regeneration of iron-oxide sponge used in wastewater-treatment-plant digester-gas scrubbers In wastewater treatment plants it is conventional to use gas "scrubbers" to remove hydrogen-sulfide gas from digester gas. The reactive scrubbing medium in such digester-gas scrubber vessels is generally iron-oxide "sponge," which is exhausted in use and ... | 07/18/1989 |
| 4847674 | High speed interconnect system with refractory non-dogbone contacts and an active electromigration suppression mechanism An interconnect (16', 18', 18"), whose interlevel contacts comprise refractory (10) to refractory or refractory to semiconductor substrate (13) interfaces, comprises patterned refractory core portions (10), consisting of tungsten or molybdenum, having top... | 07/11/1989 |
| 4846553 | Foldable viewer A foldable viewer includes a front wall having a pair of lens-receiving openings and a pair of optical lenses affixed thereto. A rear wall is included and has a pair of openings over which transparencies depicting stereoscopic images are affixed. The fron... | 07/11/1989 |
| 4845603 | Connective joint with interlocking ring structures adaptable for flux or force transmission This mechanical joint allows relative rotation of two articles (one may be a stationary fixture), on an arbitrary axis. The joint has as much angular-rotation range as a hinge, but as many degrees of freedom as a ball-and-socket or universal joint. It all... | 07/04/1989 |
| 4845041 | Atomic-absorption sputtering chamber and system Gas from angled jets in a conical array bounces off the sample in a high-pressure stream, effectively centered in a duct leading to an optical-measurement chamber. A glow discharge, in the high-pressure zone where gas hits the sample, provides effective s... | 07/04/1989 |
| 4844476 | Video target response apparatus and method employing a standard video tape player and television receiver This apparatus is used with a video tape of a scene that includes a target. At least part of the target has selected interlace fields removed, so that when the scene is displayed a distinctive periodic sequence of light pulses is associated with that targ... | 07/04/1989 |
| 4840628 | Non-enveloped gel prosthesis An unconstrained cohesive gel prosthesis is disclosed for implantation in a human body. The prosthesis consist essentially of an unconstrained, pressure-disbursing, cohesive, homogenous gel which can be stretched substantially more then 21% of its length ... | 06/20/1989 |
| 4839700 | Solid-state non-volatile electronically programmable reversible variable resistance device A solid-state variable resistance device (10) whose resistance can be repeatedly altered by a control signal over a wide range, and which will remain stable after the signal is removed, is formed on an insulated layer (14), supported on a substrate (12) a... | 06/13/1989 |
| 4834711 | Dispensing appliance for insertion and maintenance of catheters, tubes and other articles of therapy The appliance lubricates and disinfects the catheter, tube, or other article, as the catheter is inserted into or maintained in a patient's urethra or other body opening. It also mildly anesthetizes the interior of the body opening itself. A contoured shi... | 05/30/1989 |
| 4827216 | Differential triple-coil tester for wire rope with periodic lay effect cancellation An electrical coil driven by an alternating current develops an alternating magnetic field. A segment of a wire-rope specimen is placed next to and on the axis of the coil, but perpendicular to the axis, so that the specimen lies in the field. Two sensor ... | 05/02/1989 |
| 4826061 | Vehicle luggage carrier with flush tiedown endcap Several parallel slats are fixed to a vehicle deck. Flanges along both sides of each slat serve as a track for a sliding bracket. The sliding bracket has an internal clamp for securing it along its slat. The sliding bracket has either (1) a ring for attac... | 05/02/1989 |
| 4819530 | Apparatus and method for trimming a venetian blind assembly An automatic or semiautomatic apparatus cuts off the ends of preassembled standard venetian blinds to provide custom-size blinds for windows that are not modern standard sizes. An automated process is used to cut preassembled blinds to provide custom-size... | 04/11/1989 |
| 4818405 | Sludge treatment Municipal sludge is converted from an environmental problem into soil amendment and electricity. Methane, produced in an anaerobic digester (2), is used partially to generate electricity and partially to dry the concentrated sludge in a rotary dryer (7). ... | 04/04/1989 |
