Corning Glass Works

Corning Incorporated

Other

Thomas P DeAngelis

Irwin M Lachman

Raja Rao Wusirika

John P Day

David S Decker

The device consists of a shaft with a detachable brush head. The brush head is a new design incorporating the utility of an expandable self adjusting area that yields a complete sample of the endocervix and exocervix regardless of varying individual anatomy. The brush head has protrusions disposed at strategic positions with flat surface collection areas. A ledge with protrusions samples the exocervical area and a middle portion samples the endocervical area. The middle portion automatically elongates from approximately 2 cm to 5.5 cm as to adjust to individual anatomies as the brush head is inserted into the cervical canal. The brush head is matched to a special collection container that permits the brush head to be detached and deposited into the container without the handling of the brush/head area. The special conical insert within the container automatically orients brush head for passage through horizontal slot at bottom of insert without operator's need to manually align. In this fashion the sampled cellular material can be completely, safely, and securely transported for laboratory evaluation.

Combination self adjusting endocervical / exocervical sampling device and cell transport / preservation system

A structure with encapsulated catalyst-agglomerate bodies which are integral to a porous structure is presented. The catalysts may be singly and/or multiply dispersed on and/or throughout a high surface area material and subsequently mixed with batch material prior to firing the structure. This results in a structure wherein encapsulated catalyst-agglomerate bodies in a porous structure exhibit the same catalytic activity as in a break in aged catalyst coated substrate.

Catalyst-agglomerate bodies encapsulated in a structure and method for

This invention is directed to the production of oxide-boride-silicon nitride ceramics consisting essentially of ceramic bodies of oxide and boride phases which have silicon nitride added to improve the properties of the ceramic body for use as wear material, durable interface material, and cutting tool inserts. The addition of Si.sub.3 N.sub.4 to the oxide-boride body provides a durable ceramic material which provides a range of cutting speeds that may be utilized in both turning and milling operations.

Reaction sintered boride-oxide-silicon nitride for ceramic cutting tools

Cermet body formed by reaction sintering at pressures ranging from subatmospheric to superatmospheric of admixed and shaped particulate exothermic reactants, which have maximum particle size substantially not greater than 150 .mu.m and can be elements, compounds, intermetallic compounds and/or alloys, in stoichiometric proportions to substantially form 40-95 mole percent of first phase or phases being boride, nitride, silicide, sulfide or combination thereof of one or more of the elements of Groups 2a, 3a exclusive of B, 4a, 2b, 3b including lanthanide and actinide series elements, 4b, 5b, 6b, 7b and 8, and 5-60 mole percent of second phase or phases being metal, alloy, intermetallic compound or combination thereof of one or more of the elements of Groups 3a exclusive of B, 4a, 2b, 4b, 5b, 6b, 7b, iron, cobalt and nickel, wherein the maximum grain size of the first phase or phases is substantially not greater than 10 .mu.m and which body contains 0 to 4 weight percent oxygen.

Reaction sintered cermet

A monolithic refractory honeycomb filter of zircon or zircon plus an oxide additive is useful to remove impurities from molten metal, particularly from molten steel. The filter has a frontal contact surface containing the openings of a plurality of through-and-through cells for passage of the molten metal. Impurities adhere to the frontal contact surface of the filter and to the cell walls themselves.

Method of filtering molten metals using a monolithic refractory

A method of preparing a monolithic catalyst support having an integrated high surface area phase is provided. A plasticized batch of ceramic matrix material intimately mixed with high surface area powder is formed into the desired shape for the monolith and then heated to sinter the ceramic. The resulting monolith has a strong substrate of the ceramic matrix material and a high surface area phase provided by the high surface area powder extruded with the batch.

Preparation of monolithic catalyst supports having an integrated high

Ceramic body formed by reaction sintering at pressures ranging from subatmospheric to superatmospheric of admixed and shaped reactants, which can be elements, compounds, intermetallic compounds and/or alloys, in stoichiometric proportions to substantially form 5-95 mole percent of nitride phase or phases of one or both of Al and Si, and 5-95 mole percent of second phase or phases being boride, carbide, silicide and/or sulfide of one or more of elements of Groups 3b including lanthanide and actinide series elements, 4b, 5b and 6b, which phases have a maximum grain size substantially not greater than 10 .mu.m and which body contains 0 to 4 weight percent oxygen.

Reaction sintered multiphase ceramic

Ceramic body formed by reaction sintering at pressures ranging from subatmospheric to superatmospheric of admixed and shaped reactants, which can be elements, compounds, intermetallic compounds and/or alloys, in stoichiometric proportions to substantially form 10-90 mole percent of boride phase or phases of one or more of elements of Groups 3b including lanthanide and actinide series elements, 4b, 5b and 6b, and 10-90 mole percent of oxide phase or phases of one or more of elements of Groups 3a, 4a, 3b, 4b, 5b, 6b and 8, and which phases have a maximum grain size substantially not greater than 15 .mu.m. Body in a form for wear resistance and corrosion-erosion resistance has a virtual absence of open porosity, e.g. not greater than 5% or less than about 3%, and a Rockwell A hardness of greater than 90.

Reaction sintered oxide-boride

Component of electrowinning or electrorefining cell, which component in use is normally covered with molten aluminum or in electrical contact with another component which is in contact with molten aluminum. Surface and/or inner portion of component is made of ceramic body formed by reaction sintering at pressures ranging from subatmospheric to superatmospheric of reactants, which can be elements, compounds, intermetallic compounds and/or alloys, in stoichiometric proportions to substantially form 10-90 mole percent of first phase or phases being boride phase or phases of one or more of the elements of Groups 4b, 5b and 6b, and 10-90 mole percent of oxide phase or phases being predominantly Al.sub.2 O.sub.3 ; and which phases have a maximum grain size substantially not greater than 15 .mu.m. Also production cell, and method of producing aluminum in such cell, with the reaction sintered ceramic component.

Electrolytic Al production with reactive sintered ceramic components of

Component of electrowinning or electrorefining cell, which component in use is normally in contact with molten aluminum or in electrical contact with another component which is in contact with molten aluminum. Surface and/or inner portion of component is made of ceramic body formed by reaction sintering at pressures ranging from subatmospheric to superatmospheric of reactants, which can be elements, compounds, intermetallic compounds and/or alloys, in stoichiometric proportions to substantially from 5-95 mole percent of first phase or phases being boride, carbide, silicide, and/or sulfide of one or more of the elements of Groups 4b, 5b and 6b, which phases have a maximum grain size substantially not greater than 10 .mu.m. and which body contains 0 to 4 weight percent oxygen. Also production cell, and method of producing aluminum in such cell, with the reaction sintered ceramic component.

Electrolytic Al production with reaction sintered multiphase ceramic

Component of electrowinning or electrorefining cell, which component in use is normally in contact with molten aluminum or in electrical contact with another component which is in contact with molten aluminum. Surface and/or inner portion of component is made of cermet body formed by reaction sintering at pressures ranging from subatmospheric to superatmospheric of reactants, which can be elements, compounds, intermetallic compounds and/or alloys, in stoichiometric proportions to substantially form 30-95 mole percent of first phase or phases being boride, carbide, nitride, silicide, sulfide or combination thereof of one or more of the elements of Groups 4b, 5b and 6b, and 5-70 mole percent of second phase or phases being aluminum, alloy or intermetallic compound thereof, or combination thereof; and the maximum grain size of the first phase or phases is substantially not greater than 10 .mu.m. Also production cell, and method of producing aluminum in such cell, with the reaction sintered cermet component.

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Horseheads, NY, United States of America

Thomas P DeAngelis