Patents by Inventor Stephen C. Davis
Stephen C. Davis 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: 20140303546Abstract: The present invention relates to methods, uses, systems and kits for laser-assisted delivery of at least one bioactive agent to a subject. Specifically, laser light is used to create channel(s) in tissue of the subject, and the bioactive agent (s) is applied to the opening of the channel(s). The bioactive agent may be a cell, such as a functional cell, including stem cells, protein, peptide, peptide fragment, nucleic acid, nucleotide fragment, gene, pharmaceutical compound, therapeutic compound, medicament, small molecule, aptamer, or any combination of the above. Delivery may be accomplished locally or systemically, and can be used to treat local or systemic conditions or disorders. Functional reconstitution and gene therapy is also possible with the present invention. Other uses include directing bioactive agent migration, stimulating endogenous stem cell circulation, treating biofilms, and regrowth of hair. Tissue explants are also incorporated in some embodiments.Type: ApplicationFiled: June 25, 2012Publication date: October 9, 2014Inventors: Evangelos V Badiavas, Stephen C Davis, Jill S Waibel
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Patent number: 7854240Abstract: The foam tube for pipe insulations has an external surface and an internal surface. The internal surface is provided with an adhesively bonded layer of fibers. The fibers are a material having a melt temperature that is higher than that of the polymeric foam. The fibers are adhesively bonded to the internal surface such as to stand up from the internal surface. The fibers are substantially uniformly distributed over the internal surface providing a surface coverage of 2 to 20 percent. Further, the fibers have a linear density of 0.5 to 25 dtex and a length of 0.2 to 5 mm. With this fiber layer the polymeric foam tube has an improved thermal resistance and thermal conductivity.Type: GrantFiled: July 18, 2003Date of Patent: December 21, 2010Assignee: Armacell Enterprise GmbHInventors: Mika Meller, Juerg Weibel, Stephen C. Davis, Scott A. White, Charles Princell
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Patent number: 6998607Abstract: An apparatus that comprises material which have different thermal expansion coefficients, combined in such a way that the length of the drift region is variant, and self adjusting with temperature. The adjustment is such as to compensate for the length changes resulting from thermal expansion or contraction in other ion optical elements, such that ions of substantially equivalent mass to charge ratios maintain a constant flight time though the system. This allows for use of standard construction methods for the ion optical elements.Type: GrantFiled: August 31, 2004Date of Patent: February 14, 2006Assignee: Thermo Finnigan LLCInventors: Stephen C. Davis, Lee Earley, Mark Hardman, Adrian Land, Gershon Perelman
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Patent number: 6627877Abstract: A time of flight (TOF) analysis device such as a TOF spectrometer is disclosed which includes a torch and sample introduction system for supplying a beam of ions to an orthogonal accelerator. The orthogonal accelerator deflects ions in the beam sideways to an ion reflector and then to a detector. The spectrometer includes a time to digital conversion circuit and an integrated transient recorder. The detector can include a series of dynodes and the voltage between dynodes can be varied in order to maintain a constant voltage between an ion sensitive surface and the last of the dynodes. A second ion mirror may be used for reflecting some of the ions towards the detector. The orthogonal accelerator is configured and powered to provide spatial focussing according to a predetermined condition. The spectrometer may also include vertical focussing for focussing the beam back to a size commensurate with the size of the detector after the beam has been focussed by beam forming optics.Type: GrantFiled: September 13, 1999Date of Patent: September 30, 2003Assignee: GBC Scientific Equipment Pty Ltd.Inventors: Stephen C Davis, Dmytro Bandura, Andy D Hoffman, Alexander A Makarov
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Publication number: 20030012946Abstract: Disclosed is both a method and composition for providing a coated low density foam. The coated low density foam includes a low density foam substrate coated with mixture comprising a prepolymer, a monomer, a catalyst and a graft initiator. The coating is grafted onto a low density foam substrate to provide the low density foam substrate protection from abrasions, tears, scratches, ozone and UV light, while maintaining the flexibility of the foam substrate.Type: ApplicationFiled: June 28, 2001Publication date: January 16, 2003Inventors: Stephen C. Davis, Mohan L. Sanduija, Carl Horowitz, Izabella Zilbert, Paul Thottathill
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Patent number: 6371633Abstract: A snowplow blade safety light assembly attachment for providing highly visible lighting on snowplow blades. The snowplow blade safety light assembly attachment includes a fastening assembly being adapted to securely attach to a top edge of a snowplow blade; and also includes an elongate flexible support member being securely mounted to the fastening assembly; and further includes a protective member being securely mounted upon the fastening assembly for shielding a lower portion of the elongate flexible support member; and also includes a light-emitting assembly securely mounted to the elongate flexible support member and being adapted to connect to a power source of a prime mover.Type: GrantFiled: August 18, 2000Date of Patent: April 16, 2002Inventor: Stephen C. Davis
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Patent number: 5442020Abstract: A catalyst system comprising certain bimetallic metallocenes and an alumoxane is provided together with a process for the preparation of high molecular weight ethylene-alpha olefin elastomers and ethylene-alpha-olefin nonconjugated diolefin elastomers wherein the requisite monomers are polymerized in the presence of the bimetallic metallocene/alumoxane catalyst system.Type: GrantFiled: August 30, 1994Date of Patent: August 15, 1995Assignee: Polysar Rubber CorporationInventor: Stephen C. Davis
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Patent number: 5372980Abstract: A catalyst system comprising certain bimetallic metallocenes and an alumoxane is provided together with a process for the preparation of high molecular weight ethylene-alpha olefin elastomers and ethylene-alpha-olefin nonconjugated diolefin elastomers wherein the requisite monomers are polymerized in the presence of the bimetallic metallocene/alumoxane catalyst system.Type: GrantFiled: June 3, 1993Date of Patent: December 13, 1994Assignee: PolysarInventor: Stephen C. Davis
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Patent number: 5315522Abstract: A table bender controller employing a computerized display screen with the computer therefor being programmed to take keyed-in entry of customer provided bar shape specifications, whether entered by the machine operator at the machine location or from corresponding specification input data downloaded from a remote location input terminal, which specifications are in terms of a finished dimension of the bent bar profile along with the diameter of the bar to be bent and the bend degrees and directions of bend to produce the required shape, all of which either after key-in or downloading is called up in graphical display on the screen in a visual profile corresponding to that to be bent with appropriate machine and bar set instructions for producing such shape, including bending sequence, dimensions, gage marks, pin sizes and ram location for each of the component bends in the sequence.Type: GrantFiled: November 6, 1992Date of Patent: May 24, 1994Assignee: Kenneth A. KauffmanInventors: Kenneth A. Kauffman, Stephen C. Davis, Frederick W. Wise
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Patent number: 5180914Abstract: A mass spectrometry system comprises a source of ions for analysis, an ion storage device for separating the source ions as a function of their different mass-to-charge ratios, means for dissociating the separated source ions in order to generate daughter ions and an ion mirror for analyzing the daughter ions as a function of the mass-to-charge ratios. The mass spectrometry system has particular utility in the analysis of large molecules contained in biological and biochemical samples.Type: GrantFiled: May 7, 1991Date of Patent: January 19, 1993Assignee: Kratos Analytical LimitedInventors: Stephen C. Davis, Sydney Evans
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Patent number: 5120958Abstract: An ion-storage device has an electrode structure for subjecting ions in a defined region along a path P to an electrostatic retarding field.The electrostatic retarding field is in the form of an electrostatic quadrupole field. Ions enter the defined region at a position P.sub.1 on the path and they exit the defined region at a position P.sub.2, having travelled a distance x.sub.T. Ions are subjected to the electrostatic retarding field during an initial part only of a preset time interval and the velocity of each ion during that part of the preset time interval is related linearly to its separation x from the exit position P.sub.2 by the expression, ##EQU1## where m is the mass of the ion, q is its charge and k is a constant. Ions having the same mass-to-charge ratio (m/q) all exit the field region at the same time during the remaining part of the preset time interval.Type: GrantFiled: May 7, 1991Date of Patent: June 9, 1992Assignee: Kratos Analytical LimitedInventor: Stephen C. Davis
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Patent number: 5077472Abstract: An ion mirror for a time-of-flight mass spectrometer comprises a monopole electrode structure which operates at d.c. voltage. This electrode structure defines a field region in which an incident ion experiences an electrostatic reflecting force having a magnitude proportional to the separation of the ion from where it entered the field region or from where the ion exits the field region, if the latter separation is smaller. The ion occupies the field region for a time interval related to its mass but not its energy.Type: GrantFiled: July 10, 1990Date of Patent: December 31, 1991Assignee: Kratos Analytical LimitedInventor: Stephen C. Davis
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Patent number: 5045603Abstract: A chlorinated ethylene-alpha olefin-nonconjugated diolefin terpolymer having a chlorine content of from about 0.5 to 14 percent by weight characterized by superior viscosity stability on storage or exposure to elevated temperatures is obtained by chlorinating an ethylene-alpha olefin-nonconjugated diolefin terpolymer wherein said nonconjugated diolefin is an acyclic nonconjugated diolefin characterized in that one olefinic bond is monosubstituted and terminal and the other olefinic bond is trisubstituted. A vulcanizable rubber composition comprising said chlorinated ethylene-alpha olefin-nonconjugated diolefin terpolymer and cure active agents is also provided.Type: GrantFiled: July 19, 1990Date of Patent: September 3, 1991Assignee: Polysar LimitedInventors: Stephen C. Davis, Janet B. Fulton, Peter P. M. Hoang
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Patent number: 5015696Abstract: A chlorinated ethylene-alpha olefin-nonconjugated diolefin terpolymer having a chlorine content of from about 0.5 to 14 percent by weight characterized by superior viscosity stability on storage or exposure to elevated temperatures is obtained by chlorinating an ethylene-alpha olefin-nonconjugated diolefin terpolymer wherein said nonconjugated diolefin is a bridged ring nonconjugated diolefin characterized in that it is a 5-alkenyl-2-norbornene wherein the alkenyl group is a C.sub.5 to C.sub.12 hydrocarbon group with a trisubstituted olefinic bond that is not .alpha., .beta. to said 2-norbornene ring.Type: GrantFiled: July 30, 1990Date of Patent: May 14, 1991Inventors: Stephen C. Davis, Janet B. Fulton, Peter P. M. Hoang
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Patent number: 4959420Abstract: A chlorinated ethylene-alpha olefin-nonconjugated diolefin terpolymer having a chlorine content of from about 0.5 to 14 percent by weight characterized by superior viscosity stability on storage or exposure to elevated temperatures is obtained by chlorinating an ethylene-alpha olefin-nonconjugated diolefin terpolymer wherein said nonconjugated diolefin is an acyclic nonconjugated diolefin characterized in that one olefinic bond is monosubstituted and terminal and the other olefinic bond is trisubstituted. A vulcanizable rubber composition comprising said chlorinated ethylene-alpha olefin-nonconjugated diolefin terpolymer and cure active agents is also provided.Type: GrantFiled: November 1, 1989Date of Patent: September 25, 1990Assignee: Polysar LimitedInventors: Stephen C. Davis, Janet B. Fulton, Peter P. M. Hoang
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Patent number: 4762601Abstract: An electroless copper plating bath is improved so as to facilitate its regeneration in an electrodialysis cell. The bath includes elevated amounts of an added salt, preferably as Na salt. The elevated sodium ion level serves as additional counter-cation to hydroxyl ion which is produced at the cathode of the electrodialysis cell. The excess anion from the added salt increases the rate of out-migration of by-products, such as formate ions and sulfate ions, relative to hydroxyl ions through an anion permselective membrane.Type: GrantFiled: November 10, 1986Date of Patent: August 9, 1988Assignee: Morton Thiokol, Inc.Inventors: Gerald Krulik, Stephen C. Davis, John B. Davison