Quotables
"There is no reason anyone would want a computer in their home."
Ken Olsen, chairman and founder of Digital Equipment Corporation ; 1977
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7276103 | Method and device for separating molecules having different excitation spectra The invention relates to a method for the separation of molecules having different excitation spectra, which form components of a gas. The molecules are excited by laser pulses in a way that the molecules to be separated are transferred into a state of excitation du... | 10/02/2007 |
| 6137073 | Enrichment method for radioactive isotopes In the method of this invention, a radioactive isotope, for example, U238, is placed within a region. High-energy electrons or high-energy photons in the form of X-rays, gamma rays, or laser excitation are applied to the region. This energy is ... | 10/24/2000 |
| 5951830 | Process for purification of hydrochlorofluoroethanes To remove the olefinic impurities from a hydrochlorofluoroethane of formula: CF3 --CHClX (X=H, F, or Cl), it is subjected to a photochlorination stage.... | 09/14/1999 |
| 5948214 | Isotope separation A method of isotope separation includes vaporisation and atomising in an evacuated chamber a supply of the element whose isotopes are to be separated to form a stream of atoms of the element in the chamber. The supply which is vaporized includes an involi... | 09/07/1999 |
| 5945649 | Atomic vapor laser isotope separation of lead-210 isotope An isotopically selective laser process and apparatus for removal of Pb-210 from natural lead that involves a one-photon near-resonant, two-photon resonant excitation of one or more Rydberg levels, followed by field ionization and then electrostatic extra... | 08/31/1999 |
| 5468355 | Method for producing radioisotopes A target is bombarded with high energy particles to generate a radioisotope, and the radioisotope is preferably extracted by one of the following: combusting the target in oxygen, stopping the bombardment and heating the target, or heating the target by i... | 11/21/1995 |
| 5464512 | Method of uranium isotope enrichment by utilizing a photochemically selective effect A method of uranium isotope enrichment by utilizing a photochemically selective effect is provided. The method comprises placing a powder of a uranyl compound of carboxylate having at least one oxygen-containing substituent in a magnetic field, irradiatin... | 11/07/1995 |
| 5419820 | Process for producing enriched uranium having a 235 U content of at least 4 wt. % via combination of a gaseous diffusion process and an atomic vapor laser isotope separation process to eliminate uranium hexafluoride tails storage An uranium enrichment process capable of producing an enriched uranium, having a 235 U content greater than about 4 wt. %, is disclosed which will consume less energy and produce metallic uranium tails having a lower 235 U content th... | 05/30/1995 |
| 5378436 | Method and apparatus for producing hydrogen peroxide A method for producing hydrogen peroxide by electrical discharge in a material gas in which oxygen concentration is not less than 0.5% and less than 13% is disclosed in the first aspect. In the second aspect, an apparatus for producing hydrogen peroxide h... | 01/03/1995 |
| 5316635 | Zirconium isotope separation using tuned laser beams A method for selectively photoionizing odd mass Zr atoms. Atomic vapours are subjected to three resonant and are non resonant laser pulses to raise the energy of Zr atoms from the J=2 ground state, to a J=1 first intermediate state, to a J=(second interme... | 05/31/1994 |
| 5205913 | Process of 196 Hg enrichment A simple rate equation model shows that by increasing the length of the photochemical reactor and/or by increasing the photon intensity in said reactor, the feedstock utilization of 196 Hg will be increased. Two preferred embodiments of the pre... | 04/27/1993 |
| 5202005 | Gadolinium photoionization process A method is provided for selective photoionization of the odd-numbered atomic mass gadolinium isotopes 155 and 157. The selective photoionization is accomplished by circular or linear parallel polarized laser beam energy effecting a three-step photoioniza... | 04/13/1993 |
| 5131991 | Automated product recovery in a HG-196 photochemical isotope separation process A method of removing deposited product from a photochemical reactor used in the enrichment of 196 Hg has been developed and shown to be effective for rapid re-cycling of the reactor system. Unlike previous methods relatively low temperatures ar... | 07/21/1992 |
| 5130001 | Uranium isotope separation by continuous anion exchange chromatography A simple, low temperature process for separating uranium isotopes and producing substantially pure uranium isotope fractions from a crude uranium isotope-containing aqueous feed stock is provided. A uranium isotope-containing solution is fed to an anion e... | 07/14/1992 |
| 5116470 | Preparation of high specific activity technetium-96 The present invention relates to a method of producing Tc-96 from the proton irradiation of a rhodium target and a technique for isolating under remote hot cell conditions the Tc-96 from the proton irradiated target.... | 05/26/1992 |
| 5110430 | High mass isotope separation arrangement An isotope separation arrangement for separating a preselected isotope from a mixture of chemically identical but isotopically different molecules by either photon-induced pure rovibrational or vibronic selective excitation of the molecules containing the... | 05/05/1992 |
| 5108566 | Isotope separation process Selection criteria are disclosed for choosing a coreactant RX that will improve the isotope separation in laser-activated chemical reactions which may proceed by the steps: ti i MY+h.nu.L .fwdarw.i MY* (Laser Activation of Isot... | 04/28/1992 |
| 5100803 | On-line method of determining utilization factor in Hg-196 photochemical separation process The present invention is directed to a method for determining the utilization factor [U] in a photochemical mercury enrichment process (196 Hg) by measuring relative 196 Hg densities using absorption spectroscopy.... | 03/31/1992 |
| 5093086 | Packed bed reactor for photochemical 196 Hg isotope separation Straight tubes and randomly oriented pieces of tubing having been employed in a photochemical mercury enrichment reactor and have been found to improve the enrichment factor (E) and utilization (U) compared to a non-packed reactor. One preferred embodimen... | 03/03/1992 |
| 5061353 | High feedstock utilization photochemical process for 196 Hg enrichment A photochemical process for 196 Hg enrichment is provided. The process of the invention includes entraining mercury including 196 Hg isotope in a carrier medium comprising argon and HCl; and exposing the entrained mercury including | 10/29/1991 |
| 5056359 | Method and apparatus to measure vapor pressure in a flow system The present invention is directed to a method for determining, by a condensation method, the vapor pressure of a material with a known vapor pressure versus temperature characteristic, in a flow system particularly in a mercury isotope enrichment process.... | 10/15/1991 |
| 5031883 | Apparatus for mercury refinement The effluent from mercury collected during the photochemical separation of the 196 Hg isotope is often contaminated with particulate mercurous chloride, Hg2 Cl2. The use of mechanical filtering via thin glass tubes, ultras... | 07/16/1991 |
| 5024739 | Novel hybrid isotope separation scheme and apparatus A method of yielding selectively a desired enrichment in a specific isotope including the steps of inputting into a spinning chamber a gas from which the specific isotope is to be isolated, radiating the gas with frequencies characteristic of the absorpti... | 06/18/1991 |
| 5015348 | High mass isotope separation arrangement An isotope separation arrangement for separating a preselected isotope from a mixture of chemically identical but isotopically different molecules by either photon-induced pure rovibrational or vibronic selective excitation of the molecules containing the... | 05/14/1991 |
| 5013366 | Cleaning process using phase shifting of dense phase gases A process for removing two or more contaminants from a substrate in a single process. The substrate to be cleaned is contacted with a dense phase gas at or above the critical pressure thereof. The phase of the dense phase gas is then shifted between the l... | 05/07/1991 |
| 5012106 | Axi-symmetrical flow reactor for 196 Hg photochemical enrichment The present invention is directed to an improved photochemical reactor useful for the isotopic enrichment of a predetermined isotope of mercury, especially, 196 Hg. Specifically, two axi-symmetrical flow reactors were constructed according to t... | 04/30/1991 |
| 4981565 | Method and apparatus for controlling the flow rate of mercury in a flow system A method for increasing the mercury flow rate to a photochemical mercury enrichment utilizing an entrainment system comprises the steps of passing a carrier gas over a pool of mercury maintained at a first temperature T1, wherein the carrier gas entrains ... | 01/01/1991 |
| 4981562 | Electrolytic recovery of mercury enriched in isotopic abundance The present invention is directed to a method of electrolytically extracting liquid mercury from HgO or Hg2 Cl2. Additionally there are disclosed two related techniques associated with the present invention, namely (1) a technique fo... | 01/01/1991 |
| 4946567 | Apparatus for the distribution of laser beams used during a selective reaction in a process for isotope separation by lasers Apparatus for the distribution of laser beams used during a selective reaction in a process for isotope separation by lasers. The system comprises in an enclosure (10), a material in the form of a vapor flow, from which it is wished to extract one species... | 08/07/1990 |
| 4880512 | Pulsed light selective photolysis process for treatment of biological media and products made thereby A novel irradiation process and products made thereby. The process treats biological media such as blood fractions, genetically engineered protein products and vaccine preparations. The process photolyzes nucleic acids in preference to proteins in the med... | 11/14/1989 |
| 4824537 | Working substances used in laser isotope separation and method of laser isotope separation Silicon isotopes are effectively separated by irradiating a polysilane compound or a fluoromosilane compound according to this invention with infrared laser rays. The polysilane compound is defined by the formula. where 2ࣘaࣘ3, 0ࣘbࣘ2a+2, 2a+2=b+c and X ... | 04/25/1989 |
| 4801365 | Method for enriching a middle isotope using vibration-vibration pumping Method for producing isotopically enriched material by vibration-vibration excitation of gaseous molecules wherein a middle mass isotope of an isotopic mixture including lighter and heavier mass isotopes preferentially populates a higher vibrational mode ... | 01/31/1989 |
| 4793907 | Method for isotope enrichment of mercury-196 by selective photoionization A method is provided for selectively photoionizing 196 Hg atoms in a vapor utilizing a three or four-step photoionization process.... | 12/27/1988 |
| 4786478 | Method and apparatus for isotope separation Method and apparatus for isotope separation using the combination of selective pre-excitation by light radiation with further collisional processing in a DC, rf or microwave gas discharge field to recover ionized atoms or dissociated molecules of the sele... | 11/22/1988 |
| 4775453 | Separation method of boron isotopes Boron isotopes are separated by a method comprising preparing a gaseous mixture from a gas containing an oxidizing gas as its main component and gaseous boron tribromide, and irradiating the gaseous mixture with light from an ammonia laser, thereby effect... | 10/04/1988 |
| 4774026 | Process and apparatus for oxidizing or reducing dissolved substance A dissolved substance contained in a solution is oxidized or reduced by adding a particulate semiconductor photocatalyst and a water-soluble electron acceptor or donor for the particulate semiconductor photocatalyst to a solution containing a dissolved su... | 09/27/1988 |
| 4767513 | Zirconium isotope separation process The zirconium 91 isotope is separated from zirconium by a photo-assisted extraction process wherein a first solution is formed of a first solvent, scavenger and zirconium compound, which compound reacts with the scavenger when exposed to light, and while ... | 08/30/1988 |
| 4734177 | Laser isotope separation A process and apparatus for separating isotopes by selective excitation of isotopic species of a volatile compound by tuned laser light. A highly cooled gas of the volatile compound is produced in which the isotopic shift is sharpened and defined. Before ... | 03/29/1988 |
| 4689128 | Method of separating isotopes A method is, herein, disclosed for separating a specific isotope from a mixture of isotopes by first irradiating the isotope mixture with a highly monochromatic laser light that resonates only with the energy level of the specific isotope so as to increas... | 08/25/1987 |
| 4655890 | Laser isotope separation by multiple photon absorption Multiple photon absorption from an intense beam of infrared laser light may be used to induce selective chemical reactions in molecular species which result in isotope separation or enrichment. The molecular species must have a sufficient density of vibra... | 04/07/1987 |
