OCUIS-6223187 $3.00+ 00 Q 1987 Pcrpamon Juumak Ltd.

NEW PATENTS

This Section contains abstracts (without graphics) of recently issued United States patents and published patent applications filed from over 30 countries under the Patent Cooperation Treaty. This information was obtained from recent additions to the Pergamon PATSEARCH& online database in accordance with interest profiles developed by the Editors. Further information about Pergamon PATSEARCH@ can be obtained from Pergamon InfoLine Inc., 1340 Old Chain Bridge Road, McLean, Virginia 22101 U.S.A.

Copies of complete patents announced in this Section are available from Pergamon InfoLine Inc. for $8 per copy. Payment with order is required. Orders outside North America add $2 for air postage. Order by patent number fo; Pergamon InfoLine oily.

4559631

HEAT TREATING FURNACE WITH GRAPHITE HEATING

ELEMENTS

Craig A Moller assigned to Abar Ipsen Indus- tries

A heat treating furnace having a work chamber of circular cross-section and having banks of electric resistance heating elements formed by rigid and elongated graphite bars. The graphite bars of each bank are interconnected so as to form an octagon located closely adjacent the cir- cular wall of the work chamber and closely ap- proximating the circular shape of the chamber. As a result of the octagonal arrangement, ring- like banks of rigid graphite elements may be space longitudinally along the circular work chamber to enable front-to-rear temperature trim zones to be established in the chamber.

4560672

RUTHENIUM-COPPER- CONTAINING, ACTIVATED-

CARBON-SUPPORTED CATALYST AND PROCESS FOR

MAKING ALCOHOL USING SAME

Thomas Attig, Anne Graham, Frederic Pesa as- signed to The Standard Oil Company

A catalyst is disclosed which comprises a ruthenium-copper-containing complex of the formula See Patent for Tabular Presentation PS wherein M is selected from the group consisting of Ce, Cr, Fe, Mn, and mixtures thereof, A is an alkali metal, alkaline earth metal or mixture thereof, a is from 0 to about 1, b is from about 0.002 to about 10, c is from about 0.2 to about

20, z is from 0 to about 1% by weight, x is the number of oxygens needed to fulfill the valence requirements of the other elements, said complex being supported by an activated carbon support having a surface area of at least about 300 square meters per gram. A process for converting mix- tures of hydrogen and carbon monoxide, par- ticularly synthesis gas, to alcohol with minimal levels of hydrocarbon by-products being formed is also disclosed.

4562094

METHOD OF MANUFACTURING POROUS CARBON STRUCTURES

Franz Goebel, Timothy B Haskins, David C Batson assigned to GTE Government Systems Corporation

Trichlorotrifluoromethane is used as a vehicle to apply carbon and a binder to a substrate. Car- bon black and tetrafluoroethylene are suspended in liquid trichlorotrifluoroethane to form a slurry. A layer of the slurry is deposited on a sub- strate. The trichlorofluoromethane is evaporated leaving a porous residue of carbon and tetrafluoroethylene on the substrate.

4563341

METHOD AND MEANS FOR CONVERTING GRAPHITE TO

DIAMOND

Hugh Flynn

A host liquid, such as a liquid metal, which is seeded with small bubbles of an inert gas, is maintained in a sealed chamber at an ambient temperature of about 100 degrees K. above the

II New Patents

melting point of the host liquid, and at a static pressure ranging from 1 to 100 bars. A substance (for example carbon) which is capable of being allotropically transformed from a first form thereof (for example graphite) to a second form (for example diamond), is placed in the host li- quid, which is then subjected to a time-varying acoustical pressure applied, for example, by a plurality of solid acoustical horns, which cause at least certain of the bubbles of inert gas to ex- pand and then suddenly to collapse in a cavita- tion zone located substantially centrally of the chamber. By maintaining the host liquid at a pre-

ssure and temperature sufficient to cause the Hugonoit curve of the liquid to intersect a pre- determined area of the phase diagram of the sub- stance, the shock waves produced by the collapsing bubbles can be caused to envelop par- ticles of graphite and to instantaneously trans- form them into diamond particles. The host liquid can be selected from a group consisting of aluminum, tin, gallium, thallium and indium, and alloys thereof; and the substance to be trans- formed may be selected from the group con- sisting of carbon, boron nitride and zinc sulphide.

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