Patents by Inventor Leif A. Johansson
Leif A. Johansson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20140069679Abstract: A cable termination device of the dry type, including an insulator housing with an upper end and a lower end and having a hollow interior, which lower end has an opening for insertion of the cable. The device further includes a stress controller device located inside the insulator housing and adapted to be mounted on a high voltage cable, and an electrically insulating gel filling at least part of the hollow interior of the insulator housing and surrounding at least part of the stress controller device. Further, the stress controller device extends from the lower end of the insulator housing and into the housing where it has a free end, whereby a space is formed between the stress controller device and an inner wall of the insulator housing.Type: ApplicationFiled: November 14, 2013Publication date: March 13, 2014Inventors: Mikael Hoglund, Leif Johansson
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Publication number: 20130156061Abstract: Various embodiments of an arrangement for generating fast wavelength-switched optical signal are described herein. In some embodiments, the arrangement can be integrated with lasers, optical waveguides, optical splitters and gates to form a fast wavelength switched monolithic optical source. In some embodiments, an optical modulator is incorporated into the arrangement to form a fast wavelength switched optical transmitter.Type: ApplicationFiled: September 18, 2012Publication date: June 20, 2013Applicant: FREEDOM PHOTONICS, LLCInventors: Leif Johansson, Jonathon Barton, Milan Mashanovitch
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Patent number: 8401399Abstract: In various embodiments, a monolithic integrated transmitter, comprising an on-chip laser source and a modulator structure capable of generating advanced modulation format signals based on amplitude and phase modulation are described.Type: GrantFiled: May 27, 2010Date of Patent: March 19, 2013Assignee: Freedom Photonics, LLC.Inventors: Jonathon Barton, Leif Johansson, Milan Mashanovitch
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Publication number: 20120157516Abstract: The present invention relates to novel substituted thiophene derivatives useful in therapy of diseases related to misfolded and aggregated proteins.Type: ApplicationFiled: October 19, 2009Publication date: June 21, 2012Inventors: Peter Åsberg, Leif Johansson, Anna Herland, Andreas Åslund, Peter Konradsson
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Publication number: 20100303469Abstract: In various embodiments, a monolithic integrated transmitter, comprising an on-chip laser source and a modulator structure capable of generating advanced modulation format signals based on amplitude and phase modulation are described.Type: ApplicationFiled: May 27, 2010Publication date: December 2, 2010Applicant: FREEDOM PHOTONICS, LLCInventors: Jonathon Barton, Leif Johansson, Milan Mashanovitch
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Publication number: 20080077343Abstract: An implementation of coded time-domain reflectometry that can be incorporated in a transmitter as a built-in test function is disclosed. A sequence of a signal that is being transmitted is captured, delayed and used for correlation to a received reflected signal from the transmission medium. A correlation signal is obtained if the delay value of the captured signal sequence corresponds to the roundtrip delay from the transmitter to a reflection point of the medium. Based to the relation between delay values and the strength of the correlated signal, the magnitude of reflective points throughout the transmission medium can be evaluated. In the preferred embodiment, the transmitter is an optical transmitter, and the transmission medium is optical fiber.Type: ApplicationFiled: September 10, 2007Publication date: March 27, 2008Inventor: Leif Johansson
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Patent number: 6972505Abstract: A rotating electrical machine and method for making the machine, where the machine includes a high-voltage stator winding and elongated support devices for supporting the winding. The machine and method employ an arrangement of cable that is made of inner conductive strands, covered with a first semiconducting layer, which is covered with an insulating layer, which is covered with a second semiconducting layer. The cable is wound in slots in the stator such that separate cable lead-throughs are positioned in specific arrangements with respect to each other and in slots of the stator. The arrangement of the cable in the stator protects the integrity of the respective components in the cable and particularly the second semiconducting layer.Type: GrantFiled: May 27, 1997Date of Patent: December 6, 2005Assignee: ABBInventors: Mats Leijon, Peter Templin, Bengt Rydholm, Lars Gertmar, Bertil Larsson, Bengt Rothman, Peter Carstensen, Leif Johansson, Claes Ivarson, Bo Hernnas, Goran Holmstrom, Bengt Goran, Alberti Backlund
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Publication number: 20050102777Abstract: Method, aggregate and vehicle wash equipment to with at least one fluid jet remove from an exterior surface of a vehicle (F) solid and liquid particles and where appropriate also increase the lustre of the surface, where the jet is brought to move along the surface during simultaneous exercise of a substantially horizontal oscillating movement.Type: ApplicationFiled: January 27, 2003Publication date: May 19, 2005Inventor: Leif Johansson
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Patent number: 6421455Abstract: The invention relates to a method for detecting cancer on skin of humans and mammals by picturing spectroscopy. The method includes that delta aminolevulimic acid ALA is applied on the skin on that area where cancer is suspected to be present, the substance is removed after 1 to 24 hours, and the area is illumiated with light having a wave-length of 330-440 nm and the fluorescent irradiation which arises is registered and evaluated, which radiation has a wave-length 610-715 nm. The invention also includes an arrangement for performing the method.Type: GrantFiled: July 6, 1999Date of Patent: July 16, 2002Assignee: Medeikonos ABInventors: Arne Rosén, Olle Larkö, Ann-Marie Wennberg, Fredrik Gudmundsson, Leif Johansson
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Patent number: 6074229Abstract: A cable termination for a high-voltage cable (1) with a solid insulating material (3) in an open connection to a circuit comprises a male part (A) and a female part (B) which are assembled into an electrically conducting mechanical joint. The male part comprises the cable (1) with a contact plug (6) attached to its stripped conductor (2), and a surrounding insulating body (23). The female part comprises an elongated electrode (9) provided with a contact sleeve (10) and embedded into a field-controlling body (8) with a sleeve-shaped shield termination (11), connected to ground, which has a funnel-shaped end portion (30). The contact plug (6) is adapted to be inserted into the contact sleeve (10) such that a connection with good mechanical strength and conductivity is achieved. The electrode (9) extends through the major part of the field-controlling body (8) and the connection point between the conductor and the electrode is arranged inside the end portion of the shield termination.Type: GrantFiled: November 20, 1998Date of Patent: June 13, 2000Assignee: ABB ABInventor: Leif Johansson
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Patent number: 5930914Abstract: A method and device for drying a moving web including a first infrared radiator arranged on a first side of the web and a second infrared radiator arranged on a second side of the web at least partially opposite to the first infrared radiator and proximate to the first infrared radiator. The wavelength of the maximum intensity of the radiation generated by the first infrared radiator is shorter than the wavelength of the maximum intensity of the radiation generated by the second infrared radiator. The power density of the first infrared radiator is from about 450 kW per sq.m to about 700 kW per sq.m and the emitter temperature of the first infrared radiator is from about 2000.degree. C. to about 2800.degree. C. The second infrared radiator includes a surface layer made of a metal, metal alloy or ceramic material whose emissivity is substantially equal to or higher than about 0.6.Type: GrantFiled: July 13, 1998Date of Patent: August 3, 1999Assignee: Infrarodteknik ABInventors: Leif Johansson, Borje Alexandersson
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Patent number: 5317619Abstract: Disclosed is a film feeding mechanism for use during medical x-ray techniques, particularly angiography. Sheets of film are fed sequentially at high speed from a film magazine into a film exposure device, and then into a film receiving cassette, in a manner so as to reduce damage to the films, including the build-up and discharge of static charge on the films. In the film exposure device, a free-floating lower clamping assembly clamps each film against an upper clamping assembly from the center of the film progressively outward towards its leading and trailing ends, to eliminate wrinkling of the film. The upper clamping assembly is of thin construction so as to enable the locating of an object being x-rayed closely adjacent the x-ray film, to produce x-rays of exceptionally high resolution.Type: GrantFiled: February 16, 1993Date of Patent: May 31, 1994Assignee: Medrad, Inc.Inventors: Mark Hellmick, Leif A. Johansson, Otto Weber
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Patent number: 5193594Abstract: A method and an apparatus for measured injection of additives into oil products and the like, in particular aims at the filling of fuel in tank farms for transport by tank trucks. Each batch of fuel shall have a pre-set proportion of additive. After each terminated filling and successively at a number larger than one, there is recorded a signal (S6) which represents discrepancies between actually supplied amount of additive and the amount which corresponds to the pre-set proportion. From the first signal (S6) there is calculated a further signal (S7) which represents discrepancies throughout said number of fillings and this further signal serves as a reference or correction value during the subsequent filling operation. A particular supply conduit (10) for fuel is adapted to give a through flow of fuel in order to remove remaining amounts of additive from the measuring system itself.Type: GrantFiled: April 6, 1992Date of Patent: March 16, 1993Assignee: Norapp-Jon H. AndresenInventors: Leif A. Johansson, Tom M. Jacobsen
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Patent number: 5133391Abstract: A method and an apparatus for measured injection of additives into oil products and the like, in particular aims at the filling of fuel in tank farms for transport by tank trucks. Each batch of fuel shall have a pre-set proportion of additive. After each terminated filling and successively at a number larger than one, there is recorded a signal (S6) which represents discrepancies between actually supplied amount of additive and the amount which corresponds to the pre-set proportion. From the first signal (S6) there is calculated a further signal (S7) which represents discrepancies throughout said number of fillings and this further signal serves as a reference or correction value during the subsequent filling operation. A particular supply conduit (10) for fuel is adapted to give a through flow of fuel in order to remove remaining amounts of additive from the measuring system itself.Type: GrantFiled: January 31, 1991Date of Patent: July 28, 1992Assignee: Norapp- Joh. H. AndresenInventors: Leif A. Johansson, Tom M. Jacobsen
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Patent number: 5042056Abstract: Disclosed is a film feeding mechanism for use during medical x-ray techniques, particularly angiography. Sheets of film are fed sequentially at high speed from a film magazine into a film exposure device, and then into a film receiving cassette, in a manner so as to reduce damage to the films, including the build-up and discharge of static charge on the films. In the film exposure device, a free-floating lower clamping assembly clamps each film against an upper clamping assembly from the center of the film progressively outward towards its leading and trailing ends, to eliminate wrinkling of the film. The upper clamping assembly is of thin construction so as to enable the locating of an object being x-rayed closely adjacent the x-ray film, to produce x-rays of exceptionally high resolution.Type: GrantFiled: January 8, 1990Date of Patent: August 20, 1991Assignee: Medrad, Inc.Inventors: Mark Hellmick, Leif A. Johansson, Otto Weber
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Patent number: 4978554Abstract: A low calorie margarine and a method of making same, which margarine has a fat content of 19-38% and manufactured by emulsification of a water phase in a fat phase to directly provide a water-in-oil emulsion, in which the water phase, as a main ingredient, comprises a protein concentrate, and in which the fat phase comprises 70-100% cured (hardened) fat and the remaining fat being uncured fat, and in which the water phase comprises a heat treated and ripened solution in skim milk, butter milk, whey, water or any mixture thereof of between 2 and 6% by weight of starch and between 0.02 and 0.05% by weight of an emulsifier, which solution, after having been heat treated and ripened, is mixed with about 55-60% by weight of a protein concentrate having a protein content of 12.8%, and the fat phase is composed of fats and between 0.75 and 1.Type: GrantFiled: October 12, 1988Date of Patent: December 18, 1990Assignee: L & L International Sweden AktiebolagInventors: Jan-.ANG.ke Larsson, Leif Johansson
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Patent number: 4893322Abstract: Disclosed is a film feeding mechanism for use during medical x-ray techniques, particularly angiography. Sheets of film are fed sequentially at high speed into and out of a film exposure device, by a feed mechanism including continuously driven feed wheels and movable pinch rollers, in a manner so as to reduce damage to the films, including the build-up and discharge of static charge on the films. In the film exposure device, a free-floating lower clamping assembly, having a natural substantially flat configuration, clamps each film against an upper clamping assembly from the center of the film progressively outward towards its leading and trailing ends, to eliminate wrinkling of the film. A firing command is transmitted to an X-ray generator before each unexposed sheet of film reaches the exposure position and each cycle of operation is accomplished by energizing a single revolution clutch connectable to a continuously running, constant speed motor.Type: GrantFiled: November 15, 1985Date of Patent: January 9, 1990Assignee: Medrad, Inc.Inventors: Mark Hellmick, Leif A. Johansson, Otto Weber
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Patent number: 4613365Abstract: The invention relates to a method for pyrometallurgically recovering the precious metal content, such as gold, silver and platinum metals, of halogen-bearing materials rich in silver. The material is caused to rapidly disperse in or be finely distributed throughout an at least partially molten charge containing a non-oxidic metal-containing phase having the ability to dissolve precious metals and to substantially lower their chemical activity. The halogen content of the material herewith reacts with any fluxes or metals of high chemical activity present in the furnace charge, while forming metal halogenides. The halogenides formed are separated by slagging and/or volatilization, and the precious metals are recovered from the molten charge, depleted of halogens, in a conventional manner and with regard to the charge phases.Type: GrantFiled: September 12, 1985Date of Patent: September 23, 1986Assignee: Boliden AktiebolagInventors: Hans G. Berg, Sven A. Holmstrom, Leif Johansson
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Patent number: 4608083Abstract: The invention relates to a method for recovering the valuable metal content of a mix of contaminated copper raw materials, of which materials at least one is sulphide bearing, and which contain one or more impurities forming the group arsenic, antimony, bismuth, mercury, tin, chlorine and other halogens. The invention is characterized by adjusting the halogen content of the mix so that it is substantially at least stoichiometric in relation to remaining impurities in the group, whereafter the mix is charged to a furnace in which melting can take place and in which the mix is heated to at least 500.degree. C., but beneath the melting points of respective ingredients of the mix, while maintaining good contact with hot gas therewith to expel substantially all of the aforementioned impurities present.Type: GrantFiled: September 12, 1985Date of Patent: August 26, 1986Assignee: Boliden AktiebolagInventors: Sven A. Holmstrom, Leif Johansson
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Patent number: D544748Type: GrantFiled: February 9, 2006Date of Patent: June 19, 2007Assignee: 3P projekt ABInventor: Leif Johansson