Patents Represented by Law Firm Robbins, Dalgarn, Berliner & Carson
  • Patent number: 5096586
    Abstract: Dopable, fully dense polymer membranes are used to form membranes having selective permeabilities. To improve selectivity, the membranes may be subjected to chemical or electrochemical treatment with electron donors or acceptors to alter the doping level of the polymer membrane, generally in a reversible fashion. This leads to significant changes in gas permeation rates relative to what is observed for the non-doped, fully dense polymers. This change in doping level of the polymer films can be precisely controlled by varying the concentration and nature of chemical dopants used. Desirable changes in permeation rates are achieved by a treatment which comprises a reversal doping of the polymeric material, followed by removal of the dopants (to provide an "undoped" polymer).
    Type: Grant
    Filed: August 28, 1990
    Date of Patent: March 17, 1992
    Assignee: Regents of the University of California
    Inventors: Richard B. Kaner, Mark R. Anderson, Benjamin R. Mattes, Howard Reiss
  • Patent number: 5094139
    Abstract: A desoldering wick which comprises a small number (e.g., three) of strands of a thin wire (i.e., having a diameter less than about 0.002") braided together to form a hollow tube which is subsequently flattened. Such a wick is suitable for use in desoldering operations for which the heretofore available products were too large, and provides a more rapid removal of molten solder than is achieved with the prior art products. Methods and apparatus are also provided which enable the manufacture of desoldering wicks comprising fewer strands of wire and/or wire of a substantially smaller diameter than has heretofore been possible. By modification of conventional apparatus to reduce the substantial drag on the wire strands heretofore encountered during the braiding operation, it is now possible to prepare wicks with thicknesses on the order of about 0.008" from wire having a substantially smaller diameter (i.e., less than 0.002") than was previously feasible.
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: March 10, 1992
    Assignee: Solder Removal Company
    Inventor: Alan L. Forsha
  • Patent number: 5091933
    Abstract: To interface a primary telephone terminal with a vast number of remote terminals through a telephone network, parties at the remote terminals are individually screened to attain a select group. Bridged together, the select group is preliminarily informed of the status of the interface by a voice generator and, accordingly, the multitude of connections are synchronized for the interface. On cue, the select group is coupled to the primary telephone terminal for unilateral communications. Deviations from the unilateral communication include select bilateral communication for a few of the remote terminals and digital communication from the remote terminals by push button as for polling applications. Subjects for interfaces are programmed for selection from a memory.
    Type: Grant
    Filed: January 17, 1991
    Date of Patent: February 25, 1992
    Assignee: First Data Resources, Inc.
    Inventor: Ronald A. Katz
  • Patent number: 5089123
    Abstract: Methods and apparatus for continuous separation and optional recovery of one or more contaminants from a liquid, and in particular, for isolation of one or more specific elements, isotopes, ions, complexes and/or compounds from mixtures of similar or dissimilar materials, whereby the liquid containing such mixture is treated continuously, and the thus-isolated material may if desired be economically recovered. Through the use of means for continuously moving an affinity medium in a direction countercurrent to the flow of a liquid containing the material to be isolated, it is possible to obtain contaminant removal efficiencies comparable or superior to what would be obtained with heretofore known methods, and to achieve selective removal of one or more contaminants from a mixture. The affinity medium is selected on the basis of its ability to form an association with one or more of the components of the mixture being treated.
    Type: Grant
    Filed: September 14, 1989
    Date of Patent: February 18, 1992
    Assignee: Metanetix, Inc.
    Inventor: Irving W. DeVoe
  • Patent number: 5088526
    Abstract: A method for disposal of aerosol dispensers and the contents thereof, which comprises cooling of the aerosol dispenser and its residual contents to a temperature below which the propellant exhibits a substantial vapor pressure (i.e., below the boiling point(s) of the propellant(s)). It is then possible to puncture the container without danger of an uncontrolled release of the contents. The cold liquefied propellant and any additional liquid contents of the spray container may then be drained, without any danger of propellant release to the atmosphere, into a collection container capable of subsequently accommodating the vapor pressure of the propellant at ambient temperature. The container is sealed while its contents are still cold and the liquid is allowed to reach ambient temperature, whereby the propellant regains its vapor pressure and some of the propellant mixture returns to a gaseous form.
    Type: Grant
    Filed: December 7, 1989
    Date of Patent: February 18, 1992
    Inventor: John P. Nash
  • Patent number: 5089961
    Abstract: An apparatus and a method are provided for vascular examination of a limb by inflation of a flexible-walled pneumatic chamber mounted to the limb and calibration of the pressure within the chamber in units of volume. Calibration is accomplished by inflating the chamber to a preselected reference pressure, altering the volume of the chamber, and measuring the calibration pressure at the altered volume. The calibration pressure is stored for use off-line in scaling subsequent pressure fluctuations as changes in limb volume.
    Type: Grant
    Filed: July 24, 1989
    Date of Patent: February 18, 1992
    Assignee: ACI Medical Incorporated
    Inventors: Stephen J. Coble, Edward J. Arkans
  • Patent number: 5087082
    Abstract: This invention is directed to a novel rotary joint or coupling which is useful for coupling a rotating element to a non-rotating element. More particularly, this invention is directed to a novel rotary joint or coupling which couples a rotating element to a non-rotating element and allows for the passage of a process fluid from the rotating element to the non-rotating element or vice versa, and seals the flowing process fluid from the external environment.
    Type: Grant
    Filed: December 13, 1989
    Date of Patent: February 11, 1992
    Assignee: Indu-Tech Enterprises Ltd.
    Inventor: Niels A. Anthonsen
  • Patent number: 5087790
    Abstract: A method for conversion of a starting compound containing a carbon-oxygen double bond to a corresponding product containing a carbon-carbon bond, in particular for conversion of a carbonyl compound to the corresponding olefinic derivative, in which the carbonyl substrate is reacted with an appropriate titanocene derivative. The method is particularly suitable for the olefination of aldehydes, ketones, esters, lactones, amides and lactams. The olefination procedure using these titanocene derivatives proceeds rapidly and in high yield, and is of a more general applicability than heretofore known methods.
    Type: Grant
    Filed: June 12, 1991
    Date of Patent: February 11, 1992
    Assignee: University of Southern California
    Inventors: Nicos A. Petasis, Eugene I. Bzowej
  • Patent number: 5085571
    Abstract: A mold for forming a container from a sheet of deformable material has upper and lower mold parts with die surfaces in conforming relation to one another. Upper and lower keys, each having a shear surface, are mounted in said upper and lower mold parts, respectively, so that the shear surfaces confront each other to form an opening in the container as the mold parts close. At least one of said keys is mounted so that its shear surface pivots on a plane normal to the motion of the closure of the mold parts.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: February 4, 1992
    Assignee: Dolco Packaging Corporation
    Inventor: Wayne Congleton
  • Patent number: 5083698
    Abstract: An effective, convenient, economical and safe system for installing and removing multi-sided gull-wing semiconductor devices from circuit boards without damaging the semiconductor device is provided. The solder removal system is formed by the combination of a surmo-multi-sided wick formed from welded braids and a solder removal gun that has been adapted with a corresponding multi-sided tip face with vacuum capability. An apparatus and process of using such apparatus thereof to produce the multi-sided shape surmo-wick used in the solder removal system are also provided.
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: January 28, 1992
    Assignee: Solder Removal Company
    Inventor: Alan L. Forsha
  • Patent number: 5082929
    Abstract: A method for attachment of glycocompounds and glycoconjugates to hydrazide gels, wherein a solution of glycocompound or glycoconjugate containing a suitable oxidizing agent is brought into contact with the hydrazide gel without prior removal of the oxidizing agent. Suitably, the solution is introduced into a cartridge containing the hydrazide gel. In accordance with a first embodiment, this method requires relatively short incubations of about 30 minutes for oxidation of the glycosaccharide moiety of the glycocompound or glycoconjugate, followed by about 15 minutes for binding the oxidized glycocompound or glycoconjugate to the hydrazide gel. Pursuant to another embodiment, incubation with the oxidizing agent is carried out simultaneously with bringing the solution into contact with the gel (e.g., within the cartridge). Synthetic polymer gels with terminal hydrazide groups are particularly suitable for use in this method, as these gels are especially resistant to oxidizing agents such as sodium periodate.
    Type: Grant
    Filed: August 8, 1990
    Date of Patent: January 21, 1992
    Assignee: BioProbe International, Inc.
    Inventors: That T. Ngo, Gilbert Fung
  • Patent number: 5080610
    Abstract: There is disclosed an apparatus for fixing a halogen lamp (1) characterized in that a spacer (11) of fluorocarbon resin is mounted on an insulator portion of the halogen lamp (1) and that the halogen lamp (1) is fixed to a metallic fixing member (10) through the spacer (11).
    Type: Grant
    Filed: May 16, 1990
    Date of Patent: January 14, 1992
    Assignee: Rinnai Kabushiki Kaisha
    Inventors: Yoshihiro Kanaya, Makoto Morishima
  • Patent number: 5078803
    Abstract: Transparent conductors for use in a variety of different photovoltaic devices are disclosed, comprising at least one ZnO transparent conductor layer having a predetermined level of haziness achieved, e.g., through appropriate variation in the parameters employed in formation of the transparent conductor (for example, by chemical vapor deposition) and/or through treatment of the transparent conductor subsequent to its formation. The concentration and/or relative rate of introduction of dopant during the deposition of the transparent conductor may be adjusted to prepare films having the desired morphology and/or structure. Alternatively, the morphology, composition and/or structure of the transparent conductor may be modified by suitable post-formation treatments. A combination of at least two transparent layers may also be employed, comprising at least a first layer designed primarily to maximize the optical properties and at least a second layer designed to maximize the electrical properties.
    Type: Grant
    Filed: September 22, 1989
    Date of Patent: January 7, 1992
    Assignee: Siemens Solar Industries L.P.
    Inventors: David N. Pier, Charles F. Gay, Robert D. Wieting, Heidi J. Langeberg
  • Patent number: 5078119
    Abstract: A chain saw cutting device and method for flush and square cutting walls and other flat concrete surfaces is disclosed. The chain saw cutting device is typically used in conjunction with a track-mounted circular saw cutting assembly, each being removably mounted either on a trolley which rides on, or directly to a track structure, which track structure is attached to the surface to be cut. The chain saw cutting device has an elongated bar and cutting chain which when mounted are positioned in the same cutting line made by the circular saw assembly. The carriage structure of the chain saw cutting device includes a reversible cutting drive and extends on only one side of a cutting plane containing the chain bar and cutting chain. Hence, the chain saw cutting device permits square cutting along the cutting line as well as flush cutting with respect to a perpendicular side wall, ceiling or floor.
    Type: Grant
    Filed: November 6, 1990
    Date of Patent: January 7, 1992
    Assignee: Cushion Cut, Inc.
    Inventors: William K. Holmes, Albert E. Joneikis
  • Patent number: 5077509
    Abstract: A circuit for recovering electromagnetic energy from multiple windings electrical motor open circuit armature windings when interrupted while contacted through coupled commutator segments by brushes of the two groups. This energy recovery circuit includes, for one group brush, a half bridge circuit composed of a plurality of diodes coupled between the group brush and positive and negative polarity terminals of a DC electrical energy coupling means, and two or more group brushes are so connected.
    Type: Grant
    Filed: March 20, 1986
    Date of Patent: December 31, 1991
    Inventor: John T. R. Wilson
  • Patent number: 5072010
    Abstract: Higher order cuprate complexes are prepared by means of a transmetalation from a corresponding zirconate intermediate. This process is particularly valuable with respect to the preparation of vinylic side chains such as are present in prostaglandins, as it is possible in accordance with the present invention to proceed directly from the acetylenic precursors via the reactive cuprates to the desired final products in a one-pot operation without isolation of intermediates and in high yields. Sequential additions to zirconium intermediates of components which together comprise the cuprate involved in transmetalation with the zirconium intermediate are disclosed as alternative procedures.
    Type: Grant
    Filed: April 4, 1990
    Date of Patent: December 10, 1991
    Assignee: University of California
    Inventors: Bruce H. Lipshutz, Edmund L. Ellsworth
  • Patent number: 5070454
    Abstract: An object is exposed to penetrating radiation at each of a plurality of partial rotations of the object. Radiation transmitted through the object strikes a separate sheet of radiographic film for each exposure to record an entire radiographic image of the object for each angular orientation. At least two reference markers for providing a reference relative to the object are positioned between a rotating device and the sheet of radiographic film. They are positioned so that their centers constitute the base points of an equilateral triangle, the apex point thereof being the center of the rotating device.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: December 3, 1991
    Assignee: Olganix Corporation
    Inventor: Lionell K. Griffith
  • Patent number: D322316
    Type: Grant
    Filed: June 14, 1989
    Date of Patent: December 10, 1991
    Assignee: Evergreen Industries, Inc.
    Inventor: Johnson N. S. Wong
  • Patent number: D322757
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: December 31, 1991
    Assignee: Dolco Packaging Corp.
    Inventor: Joe Payne
  • Patent number: D324432
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: March 3, 1992
    Assignee: Atlantic Richfield Company
    Inventor: John S. Frost