Entegris, Inc.

Aeronex, Inc.

Other

Mykrolis Corporation

Joshua T Cook

Jeffrey J Spiegelman

Daniel Alvarez, Jr

Charles H Applegarth

Peter K Shogren

Rocky D Gipson

Sarah Vogt

Matthew Browning

Marco Holzner

Thomas R Gaffney

Daimhin Paul Murphy

Stenio Da Costa Pereira

Abneesh Srivastava

Troy B Scoggins

Peter K Shorgen

Tram Doan Nguyen

Daniel A Lev

Daniel Alvarez

Described are methods, devices, and systems useful for adsorbing organometallic vapor onto solid adsorbent material to remove the organometallic vapor from a gas mixture that contains the organometallic vapor and other vapor, particulate materials, or both.

Methods and systems for adsorbing organometallic vapor

Described are methods, devices, and systems useful for removing gaseous ammonia from a gas mixture at a pressure in an ambient pressure range by allowing the ammonia to adsorb onto a solid adsorbent, as well as related systems and methods.

Methods and systems for removing ammonia from a gas mixture

A bone harvesting device may facilitate the removal of bone from a surgical site, for therapeutic or diagnostic purposes. The device may have a harvester tube, a harvester tube fitting, and a slide hammer. The harvester tube may have a proximal end, a distal end, and a hollow portion that can receive a sample of the bone and/or a plunger with a point that breaches cortical bone. The harvester tube fitting may be coupled to the proximal end of the harvester tube, and may receive impact to urge the distal end of the harvester tube into the bone. The slide hammer may translate along the harvester tube and impact the harvester tube fitting to urge removal of the proximal end from the bone. Complementary attachment features on the harvester tube fitting and the slide hammer may detachably couple the slide hammer to the harvester tube fitting.

Apparatus and method for harvesting bone

The invention relates to a gas purifier that removes moisture and oxygen from inert gases and reducing gases, for example, at sub-atmospheric pressures. The purifier can remove part per million levels of moisture in a gas stream to less than 100 parts per trillion by volume, and has a low pressure drop and a sharp breakthrough curve.

Gas purifier

A method for hydride gas purification uses materials having at least one lanthanide metal or lanthanide metal oxide. The method reduces contaminants to less than 100 parts per billion (ppb), preferably 10 ppb, more preferably 1 ppb. The material can also include transition metals and transition metal oxides, rare earth elements and other metal oxides. The invention also includes materials for use in the method of the invention.

Hydride gas purification for the semiconductor industry

A method is described for rapid and economical activation and/or preconditioning of gas purification substrates by providing forced convection of the preconditioning or activating gas through the pores of the substrate. The gas is pumped into the substrate-containing vessel and raised to an elevated pressure, which is maintained for a short predetermined time, followed by venting of contents of the vessel. The vessel is again pressurized with the purging gas to an elevated level, and the elevated pressure is maintained for a short predetermined time, followed by venting of the vessel. This cycle is repeated as often as needed or desired. Activation and/or preconditioning can be accomplished in a much shorter time and with much less gas usage compared to diffusion preconditioning and activation processes. This process is particularly suited for preconditioning and activation of gas purifier substrates for decontamination of gases down to &#x2266;1 ppm contaminants.

Method for rapid activation or preconditioning of porous gas purification substrates

A method is described for rapid and economical activation and/or preconditioning of gas purification substrates by providing forced convection of the preconditioning or activating gas through the pores of the substrate. The gas is pumped into the substrate-containing vessel and raised to an elevated pressure, which is maintained for a short predetermined time, followed by venting of contents of the vessel. The vessel is again pressurized with the purging gas to an elevated level, and the elevated pressure is maintained for a short predetermined time, followed by venting of the vessel. This cycle is repeated as often as needed or desired. Activation and/or preconditioning can be accomplished in a much shorter time and with much less gas usage compared to diffusion preconditioning and activation processes. This process is particularly suited for preconditioning and activation of gas purifier substrates for decontamination of gases down to &lE;1 ppm contaminants.

A method is disclosed for providing a pure gas for use medical procedures in which the gas is contaminated with other gases during the procedure, and then separating the contaminants and recovering and reusing the decontaminated gas. The method is most advantageously used in medical imaging processes, such as magnetic resonance image (MRI), where hyperpolarized image enhancing noble gases, notably He or Xe , are used for image enhancement in brain and lung imaging, and in which the contaminants are normally the exhalant gases from the imaged patient. The contaminated gas is passed through a series of drying and purification steps to remove the exhalant gases and separate the gas. The purified gas is then recovered and stored for reuse. This system prevents the loss of significant amounts of the image enhancing gases, which is important since key gases such as He and Xe are rare and expensive, and (especially He ) permanently lost once vented. Recovery of medical process gases such as those including isotopes of carbon, fluorine or phosphorus is also contemplated. High quality MR images of lung structures and processes and of brain functions can be obtained using the purified gases from this process.

Recovery and purification of gases used in medical processes

A method for the decontamination of fluid (liquid or supercritical) carbon dioxide fluid, especially of hydrocarbon contaminants, down to &lE;100 ppb concentration are described. The critical component is a high silica zeolite, preferably a high silica Y-type zeolite, ZSM-5 or a high silica mordenite, which in a variety of physical forms is capable of decontaminating such fluid CO to &lE;100 ppb, &lE;10-50 ppb, or &tilde;1 ppb, without being detrimentally affected by the supercritical operating environment. The high silica zeolite may be produced by the removal of alumina from a natural or synthetic zeolite while retaining the desirable zeolite structure, to a silica:alumina ratio of from 20-2000:1. Preferably the zeolite is disposed in separate quantities in at least two vessels, which operate alternately. A portion of the purified product from the operating vessel is directed to the other vessel and there used to remove accumulated contaminants from that vessel's zeolite. The process thus provides self-regeneration, in that regeneration of one vessel occurs while the other vessel decontaminates contaminated fluid carbon dioxide, so that use of the two can be alternated for substantially continual production of purified fluid carbon dioxide. The invention provides purified fluid carbon dioxide used in manufacture of such products as high purity electronic, optical, prosthetic or similar products or polymers or pharmaceuticals or in beverages.

Growing community of inventors

Encinitas, CA, United States of America

Joshua T Cook