Abstract: Compounds of general formula ##STR1## wherein: R is a linear or branched C.sub.1 -C.sub.20 alkyl radical, m is either 0 or 1; n has a value of from 1 to 10, are corrosion inhibitors, suitable for inhibiting the general corrosion and the stress brittlening caused by hydrogen sulfide (SSC), in an acidic environment, in the presence, or absence of carbon dioxide, of medium-and high-strength manganese steels and low-alloy steels, commonly used in petrochemical facilities and in bore drilling, transport and processing systems for natural gas or petroleum.

Abstract: An organotin stabilizer mixture comprising: (a) monoalkyltin mercaptoalcohol (b) a monoalkyltin mercaptoacid ester; and (c) a monoalkyltin sulfide provides improved early color, lubricity, and weatherability to rigid vinyl polymer formulations. The formulation may also contain a monoalkyltin mercaptoalcohol ester as an optional component.

Abstract: A low TCR cermet composition of pre-alloyed nickel-chromium may be blended with pre-alloyed titanium silicide to form an extended range low TCR cermet composition. Additionally, the nickel-chromium cermet composition may also be blended with a titanium silicide composition to form a blending pair that allows for unlimited resistivity control over a decade of resistance. Other low TCR base metal alloys in addition to nickel-chromium are further contemplated.

Abstract: The present invention relates to the use, as thickening agents in surface-active agent solutions, of aminopolyol carbamates corresponding to the general formula: ##STR1## in which: R.sub.1 represents a linear, saturated C.sub.8 -C.sub.3 alkyl;R.sub.2 represents hydrogen or a C.sub.1 -C.sub.10 alkyl;n is between 1 and 5.The present invention also relates to washing and/or cleaning compositions containing surface-active agents and to these compounds.

Abstract: Compounds having non-linear optical activity of the general formula ##STR1## wherein D and A are electron donor and acceptor groups, respectively, R.sup.1 and R.sup.2 are aromatic bridging groups, X and Y are preferably groups capable of partaking in polymerization reactions are suitable for use in polymer-based light modulator devices.

Abstract: A dye-containing polarizing film comprising a polarizing film material and a metal-containing dye represented by the following formula (I): ##STR1## wherein Me is a transition metal selected from copper, nickel, zinc and iron;Z is hydrogen, lower alkyl, lower alkoxy, sulfo or amino which is unsubstituted or substituted;Q is a 1-naphthol or 2-naphthol residue which is unsubstituted or substituted and has no or an additional phenylazo or naphthylazo group unsubstituted or substituted and in which a hydroxy group is adjacent to the azo group bonding to the benzene ring having Z and is linked with the transition metal denoted by Me to form the complex;when Q is the naphthol residue having no additional azo group, then T is naphthyl which is unsubstituted or substituted; andwhen Q is the naphthol residue having an additional azo group, the T is a phenyl or naphthyl group which is unsubstituted or substituted, which film exhibits comparable high polarizing activity with film using iodine and superior durability.

Abstract: Disclosed is a polarizing film comprising a hydrophobic polymer containing a dichroic organic colorant in an oriented state which is characterized in that the dichroic organic colorant is substantially insoluble in water, organic solvents and liquid crystals and the dichroic ratio of the colorant is not less than 7 when it is measured with the film obtained by blending the colorant intimately with polyethylene terephthalate, melting the resulting blend and forming it into a film. This polarizing film has exceptionally excellent moisture resistance and thermal resistance.

Abstract: Near infrared absorbing composition and material comprising a specific thioamide compound and a copper compound and/or a lead compound. The composition and material of this invention provide an uniform absorption over a near IR-region without decreasing other properties.

Abstract: A domestic electric appliance comprises a water purifier employing an electrodialyzer. The electrodialyzer includes an anode, a cathode, cation exchange films, and anion exchange films. The cation and anion exchange films are alternately arranged between the anode and the cathode and serve as partition walls. The domestic electric appliance further comprises a unit for using the water purified by the water purifier.

Abstract: A gas feeder for feeding a gas is disclosed. The gas feeder comprises a bubbler holding a source liquid and passing a carrier gas through the liquid, a first sensor provided upstream of the bubbler, sensing the volumetric flow of the carrier gas and producing a carrier gas flow signal, a second sensor provided downstream of the bubbler, sensing the volumetric flow of the mixture and producing a gas mixture flow signal, a valve provided downstream of the bubbler and controlling the volumetric flow of the mixture, and a computer. The computer computes the concentration of the source gas from the carrier gas flow signal and the gas mixture flow signal and estimates the mass flow of the source gas from a product of the computed concentration of the source gas and the volumetric flow of the carrier gas.

Abstract: A process for the preparation of substrate for optical disk characterized in that pellets of 4-methyl-1-pentene polymer or copolymer having a melt flow rate (MFR), as measured according to ASTM D1238 under a load of 5 kg and at a temperature of 260.degree. C., of 240-1200 g/10 min, and a melting point as measured by means of DSC of 234.degree.-240.degree. C., are injection molded into the substrate under the conditions where a temperature of at least part of a cylinder is 320.degree.-370.degree. C. and a mold temperature is not more than 55.degree. C.

Abstract: A method of manufacture of a fiberscopic catheter having a tightly fitted optical glass fiber bundle received within an internal lumen of the catheter. The lumen for receiving the optical glass fiber bundle is heated and expanded under internal fluid pressure. The catheter and lumen are then cooled with the lumen still under the internal fluid pressure. After cooling, the fluid pressure is released and the lumen retains its expanded condition. An optical glass fiber bundle is inserted into the expanded lumen to a predetermined position within the catheter. The catheter and lumen are reheated to contract the expanded diameter of the lumen about the optical glass fiber bundle to provide a fiberscopic catheter having a tightly fitted fiber optic bundle within the catheter.

Abstract: A quasi-isostatic pressure-forming methods for the production of precision explosive charges consists of the pre-heating of the explosive mass to be pressure-formed is now preheated to 100-120.degree. C. with subsequent forming in an autoclave at pressures of an order of magnitude of 3500 bar during 0.5-5 min. After pressure relief during a further phase of 10-180 min, the mass is cooled down at pressures of 50-500 bar. In a further elaboration of the invention, two autoclaves, one high pressure and one low pressure, may be utilized.

Abstract: Explosive grade ammonium nitrate (EGAN) prills are made by a process comprising the steps of:a. continuously spraying a 95 to 98% by weight solution/melt of ammonium nitrate (or a mixture of ammonium nitrate and minor proportions of one or more other EGAN--acceptable nitrates) in/with water under spray-head conditions causing the emergent jets to break into cascades of substantially mono-sized droplets;b. allowing the formed droplets to fall within a vertical duct;c. continuously feeding a stream of cooling gas upwards through the duct to effect cooling and solidification of the falling droplets and some removal of moisture so as to form substantially mono-sized EGAN prills of up to about 4 mm diameter, andd.

Abstract: A magnetically detectable plastic pipe having magnetic particles distributed in the wall of the pipe so that it is easily detected from the surface when buried in the ground, in a wall in concrete or other distant or relatively inaccessible locations. The magnetic particles are preferably distributed in the wall of the pipe by extrusion with the plastic at the time the pipe is formed and the pipe is passed through a magnet to magnetize the pipe diametrically with one pole on one side of the pipe and the other pole diametrically opposite. The pipe magnetization polarity may be selectively reversed to encode a unique magnetic signature to the pipe. Changing the magnetization polarity may also be used to encode data on the pipe. The pipe may be rotated and passed linearly through the magnet, or the magnet may be rotated around the pipe to produce a spiralled diametrically oriented magnetic structure. Another magnetic material used is strontium ferrite.

Abstract: Bending a laminate having a thermo-plastic core layer and metal sheets adjoining the core layer on both sides, is performed by heating the laminate and then bending it. To allow bends of small radius to be made, heating causes softening of at least one of the boundary regions of the core layer adjoining the metal sheets, while a central region of the core layer remains unsoftened. The heat may be by inductive heating of one or both metal sheets.

Abstract: A process for injection molding of thermoplastic materials which includes a nozzle body having a bore to provide a flow path for molten thermoplastic. One end of the nozzle body is adapted for connection with a sprue of an associated mold body, and the other is adapted for connection with an end of an associated injection molding machine. The nozzle body has a shut-off valve fluid pin housing adapted for reciprocating movement in the nozzle bore to control the flow of plastic through the nozzle body. The shut-off valve fluid pin housing also includes a body having an adjustable fluid pin with a tip portion and a fluid passage formed in the body and open at the tip portion and the other end of the fluid passage communicating with a source of two pressurized fluids, one in vapor and liquid phase and another in gas.

Abstract: The concentration of a dope of cellulose/amine oxide/water for use in the manufacture of continuous filaments of cellulose is controlled by measuring its refractive index and adjusting the water content to maintain the refractive index within specified limits.

Abstract: The present invention relates to an improvement in an injection and compression molding apparatus and a method therefor which comprises the steps of supplying molten resin by injecting it into a cavity formed by molds and compressing the resin by applying pressure. In consideration of problems with respect to the occurrence of sink marks in molded products and the deterioration in precision which are caused by the escape of resin during compression and a change in the cavity distance between two molds, the present invention provides an injection and compression molding apparatus and a molding method therefor which is capable of resolving the problems and stably producing molded products with good productivity. In the present invention, a gate is closed during compression, and a supplemental amount of resin can be injected after the compression step so as to supply the desired amount of resin in the molded article.

Abstract: To eliminate the fluctuations in the precision of the material distribution which could not be avoided when manufacturing pipes in the centrifugal moulding process with the prior art installations, a new process and an installation for carrying out the process is proposed. This has at least two cylindrical centrifugal drums (1) serving as moulds and an injection carriage (12) which is displaceable in two directions perpendicular to each other, with a feed arm (11).

Abstract: A method for forming a polycrystalline ceramic fiber which comprises blending about 5 to about 25 weight percent polymer, about 70 to about 95 weight percent silicon carbide powder and greater than 1 weight percent sintering aid; forming a fiber from the blend; and sintering the formed fiber. Preferably, the sintering aid is boron carbide. In addition, the fiber is preferably pre-sintered at a first temperature of from about 1700.degree. C. to 2300.degree. C. and then subsequently sintered at a second temperature of approximately 2000.degree. C. to about 2300.degree. C.

Abstract: A process for producing a preform having a buffer layer for use in compositing a metal matrix composite where the buffer layer is provided at a boundary between a composited portion and a non-composited portion of a metallic material in the metal matrix composite. The process includes subjecting a first dispersion including a liquid medium and a ceramic whisker homogeneously dispersed in the liquid medium to filtration under pressure to form a primary processed preform having a volume fraction of 12 to 30%, depositing on the primary processed preform a second dispersion including a liquid medium and, homogeneously dispersed therein, a binder and at least one member selected from the group consisting of a short fiber and a ceramic whisker, and drying the primary processed preform to form a buffer layer having a volume fraction lower than the volume fraction of the primary processed preform and in a range from 2 to 10%.

Abstract: A melt spinning apparatus adapted for spinning a plurality of preferably monofilaments each having a denier which is maintained within close tolerances. The apparatus comprises a nozzle head having a plurality of vertical bores which are annularly arranged about a central axis and a nozzle assembly in each of the bores. A separate melt delivery system delivers pressurized melt to each nozzle assembly, and in a preferred embodiment, each separate melt delivery system comprises one of the discharge outlets of a planetary gear pump.

Abstract: A fluid pressure regulator includes a diaphragm operated leakport controlling low liquid or fluid flow rates. A precisely formed leakage unit spaced from the leakport establishes continuous flow from the input to the output. The leakage unit includes a separate orifice unit having an integral molded body and internal precision orifice establishing the continuous flow. A multiple mold core unit for molding an integral body and orifice including a pair of aligned mold cores have opposed planar surfaces located at the orifice plane. A small gap is held between the opposed end surfaces. The orifice unit is molded as a single plastic element without flash at the orifice. The orifice has a diameter in the range of about 0.001 to 0.030 inches, and may be used in various applications requiring precise low flows. The orifice unit may include an elongated tubular body with an internal orifice molded as single integral members.

Abstract: An electromechanical device for moving magnetic tapes or disks has a metal load-bearing plate provided with openings and injection molded plastic control rods and shafts held in phase by injection molded plastic retention pieces connected through the openings. These retention pieces are provided with a greater clearance relative to the metal load-bearing plate than that achieved by injection molding by a deformation blow to the plastic control rods and shafts after molding.

Abstract: Composite molded articles having relatively rigid and flexible resin regions are bonded to one another along an interfacial fusion zone. A normally solid thermoplastic polyalkylene terephthalate resin preform (which will constitute the relatively rigid region of the composite article) is placed in a mold cavity. The flexible region of the composite article is then formed by introducing a molten thermoplastic polyester elastomer resin into the mold cavity at a temperature which is greater than the melt temperature of the solid preform. The introduced thermoplastic polyester elastomer resin contacts and at least partially plasticizes a surface region of the solid preform along the interfacial bonding zone within the mold cavity to thereby cause the polyester elastomer resin to coalesce with the at least partially plasticized surface region of the polyester resin. Upon cooling and solidification, the solid preform and the polyester elastomer are fused to one another along the interfacial bonding zone.

Abstract: To achieve the hot deformation of a work piece (2), for example by folding a piece of plastics material, the method includes exerting on the work piece (2), in the zone (2a) to be deformed, a controlled deforming pressure (P1) and, during at least the initial stage of the application of this pressure, heating the work piece in a controlled manner, at least in the zone (2a) to be deformed, whereby, under the combined effect of the pressure and the heat, the work piece is deformed into the desired final state when it has reached a temperature in relation to the mechanical deformation stress to which it is subjected.

Abstract: The invention provides a method for manufacturing sintered parts, which uses as a debinder solvent a substance harmless to the human body and which can enhance the strength of an injection-molded product.

Abstract: An article and method of manufacture of (Bi,Pb)-Sr-Ca-Cu-O superconductor. The superconductor is manufactured by preparing a first powdered mixture of bismuth oxide, lead oxide, strontium carbonate, calcium carbonate and copper oxide. A second powdered mixture is then prepared of strontium carbonate, calcium carbonate and copper oxide. The mixtures are calcined separately with the two mixtures then combined. The resulting combined mixture is then subjected to a powder in tube deformation and thermal processing to produce a substantially phase pure (Bi,Pb)-Sr-Ca-Cu-O superconductor.

Abstract: A silicon carbide material is made following a procedure including hot pressing to provide a finished product having a microstructure with an optimal grain size of less than 7 micrometers. The material exhibits a dominant failure mode of intergranular fracture requiring significant energy for crack propagation. The method of manufacturing is cost-effective by allowing the use of "dirty" raw materials since the process causes impurities to segregate at multi-grain boundary junctions to form isolated pockets of impurities which do not affect the structural integrity of the material. End uses include use as protective projectile-resistant armor.

Abstract: A needle suitable for piercing a septum of a vacuum sealed container and through which a measured fluid sample from the container may be withdrawn. The needle is capable of withdrawing fluid from small sample volumes, such that the dead volume remaining in the sealed container is reduced. The needle has an elongated body having a longitudinal axis, an unobstructed bore therethrough along the longitudinal axis, a free end, and an end region adjacent said free end which has a slight conical taper toward said free end at a predetermined angle relative to the longitudinal axis. The free end includes an oblique cut through the conically tapered end region at an angle relative to the longitudinal axis being substantially larger than the predetermined angle of the taper so as to produce an elliptical opening at the free end. The elliptical opening lies along a plane diagonal to the longitudinal axis. This produces a toe or tip that is reduced in height allowing for a decrease in dead volume.

Abstract: A liquid transfer device of disposable one-time use form to conduct a biochemical diagnostic or other assay comprises two liquid flow channels (10,110,210; 20,120,220) leading from a respective pair of channel ends to a common site (30,130,230) and operable to deliver liquid to this site in sequentially timed manner following simultaneous application of such liquid to the channel ends. Typically respectively different reagents (11,111,211; 21,121,221) are incorporated in the two channels, and a third reagent (31,131,231) at the common site, whereby a sample to be assayed in respect of a particular content can be applied to the site, immobilized by the third reagent, subsequently subjected to one channel reagent to detect any of the content of interest, and finally subjected to the other channel reagent to exhibit for the user any detected content.

Abstract: Presented is a microtube and closure cap assembly in which the closure cap is flexibly tethered to the microtube so that the closure cap may be swung from a microtube-open position to a microtube-closed and sealed position, and the closure cap then rotated through a predetermined arc to lock the closure cap to the microtube in sealed condition. Opening of the microtube from its sealed and locked condition is effected by reversing the procedure, i.e., rotating the closure cap to unlock it from the microtube and then lifting the closure cap from the microtube to break the seal. A lock lug on the microtube and a lock housing on the closure cap that are initially laterally offset when the microtube is sealed by the closure cap are brought into locking interengagement by relative rotation of the closure cap and microtube following sealing of the microtube.

Abstract: A convection-based device having no moving parts, which effectively catalytically removes volatile organic compounds from an ambient airspace. The device has, located within a vented housing, a catalytic structure designed to allow air to pass through it. The catalytic structure is heated by electric current and maintained to a predetermined temperature. Air enters the bottom of the device, passes through the catalytic structure, where the volatile organic compounds in the air are reduced, and exits the top of the device.

Abstract: An ozone generator (10) has a helical spring anode (12) located within a sealed glass dielectric tube (14) and a metal tube cathode (15) spaced across an annular gap (16) from glass tube (14). The dielectric/electrode subassembly (12, 14, 15, 16) is contained within a hollow cylindrical housing (25) made up of a tubular sleeve (26) centered between left and right porting collars (27, 28) and left and right end caps (30, 31). Gas inlet and outlet fittings (43, 44) connected through collars (27, 28) to flow oxygen axially along gap (16) through a varying intensity corona discharge, having maximums at centers of coils and minimums between coils of spring (12), and frequency determined by flow speed and coil twin separation. Fluid inlet and outlet fittings (50, 51) connect through sleeve (26) to pass cooling fluid along an annular conduit (47) formed between the inside of sleeve (26) and the outside of cathode (15).

Abstract: In the manufacture of chemical products, foods, pharmaceuticals and the like, a movable tank (201) mounted on a conveying vehicle (100) movable along conveyance courses (1, 1') between a plurality of stations (11-16) for unit processes such as mixing and reaction is transferred between relative stations by a transferring device provided on the conveying vehicle, to thereby successively perform necessary processes, thus meeting the needs of a multi-product/small-lot production. An automatic connection device is provided for supplying electric power and fluid to the movable tank. Furthermore, when necessary, a traverser device (2) for transferring the movable tank is provided between one conveyance course (1) and another conveyance course (1'). Further, a washing device is provided for washing the movable tank after the completion of the processes.

Abstract: A process for producing hydrogen cyanide by reacting methane or a gas containing methane as a main component, ammonia and an oxygen-containing gas in the presence of a platinum-containing catalyst, wherein the reaction gases are quenched by using an indirect heat-exchanger, preferably made of a nickel alloy having an iron content of not more than 4.0% by weight, without quenching them directly with water.

Abstract: This invention is directed to a method of treating automotive exhaust gas emissions or stationary source emissions. It comprises introducing an organic hydrocarbon compound or compounds containing nitro or nitroso functional groups into the emissions at a location adjacent the source of emission generation. Thereafter, the compound/emission mixture is exposed to a transition metal exchanged high silica ZSM5 zeolite catalyst. Subsequently, the effluent from the zeolite catalyst is exposed to an oxidation catalyst.

Abstract: A process for the removal of sulphur compounds from a gaseous effluent, comprising the steps of: a) contacting the gaseous effluent with an aqueous solution wherein sulphur compounds are dissolved; b) adjusting the concentration of buffering compounds such as carbonate and/or bicarbonate and/or phosphate in the aqueous solution to a value between 20 and 2000 meq/l; c) subjecting the aqueous solution containing sulphide to sulphide-oxidizing bacteria in the presence of oxygen in a reactor wherein sulphide is oxidized to elemental sulphur; d) separating elemental sulphur from the aqueous solution; and e) recycling the aqueous solution to step a). This process is suitable for removing H.sub.2 S from biogas, ventilation air etc. It can be used for removing SO.sub.2 from combustion gases by introducing the additional step, after step a) and before step c), of subjecting the aqueous solution containing the sulphur compounds to a reduction of the sulphur compounds to sulphide. H.sub.2 S and SO.sub.

Abstract: A composite semipermeable membrane comprising microporous adsorbent material supported by a porous substrate is operated in series with a pressure swing adsorption (PSA) system and the PSA reject gas is used as a sweep gas to improve membrane performance. The integrated membrane-PSA system is particularly useful for recovering high-purity hydrogen from a mixture of hydrogen and hydrocarbons, and is well-suited for integration with a steam-methane reformer.

Abstract: This invention provides a three dimensional inorganic oxide structure comprising a myriad of cavities interconnected by holes having a narrow pore size distribution, in which the diameters of the cavities is in the range from 1 to 50 .mu.m and that of the holes in the range 1 to 10 .mu.m and in which the pore volume in the range 1 to 10 .mu.m is at least 2 cc/g and in which the inorganic oxide is selected from alumina, silica, titania, zirconia and mixtures thereof and a process for the preparation of such structures.

Abstract: The invention relates to metabolically labile water-insoluble esters of formula (I), wherein R.sup.1 is an aliphatic, araliphatic, aryl or heterocyclic group; R.sup.2 is hydrogen or an aliphatic, aryl or araliphatic group; R.sup.3 is as defined for R.sup.1, or R.sup.3 and R.sup.2 together form an alkylene chain; the molecule containing at least one iodine atom and being metabolised to form products which are soluble in body fluids. The esters are used in X-ray and ultrasound image enhancement.

Abstract: A visually clear gel dentifrice comprising a polishing agent having a refractive index of about 1.41 to 1.47, a water-swellable synthetic anionic polycarboxylate polymer and a liquid vehicle of about 25-30% by weight water and 30-45% by weight of neat humectant wherein at least about 30% by weight of said dentifrice is neat sorbitol.

Abstract: A mouth and tooth care preparation consists of tensides, polishing agents, aromatizing agents as well as additional usual additives which are formulated in a binding agent or a mixture of binding agents consisting of water-soluble or water-swellable, physiologically acceptable film-forming agents. The mixture is formulated into a film which is pre-segmented into dosage units.

Abstract: A process and composition for treating skin and hair that reduces the redistribution of sebum on the skin and hair of normal and seborrheic subjects and normalizes the redistribution of sebum on the skin and hair of asteatosic persons. The composition includes a polyfluoroether with perfluoroalkyl end groups in combination with at least one surfactant having an interface tension less than or equal to 15 dynes/cm with the polyfluoroether, at least one thickening agent, water and optionally a polyalcohol, foam booster, softener, dye, preservative, opacifier, or sequestering agent.

Abstract: This invention provides an improved process for producing an antiperspirant-deodorant cosmetic stick product. An essential aspect of the process improvement is a phased order of ingredient addition and blending of formulation ingredients under controlled temperature conditions. Another essential aspect is the incorporation of particulate antiperspirant and alkali metal bicarbonate ingredients, at least one of which has ingredient particle surfaces coated with a hydrophilic organic polymer.

Abstract: Cross-linked labelled antibody conjugates are described which have at least one non-disulphide interchain bridge. The bridge may be the residue of a homo- or heterofunctional cross-linking reagent, and is located away from the antigen binding domains of the antibody. The antibody conjugates have an enhanced binding capacity and in vivo have good blood clearance and, in the presence of a tumour high tumour: blood and tumour: bone ratios. The conjugates are of use in the diagnosis and therapy of e.g. tumours and may be prepared by reaction of a cross-linking reagent with an antibody.

Abstract: Subunit vaccines and their use for immunizing fish against infection by viruses are disclosed. In particular, plasmid pG8 is constructed by joining, with the plasmid pUC8, DNA which encodes the glycoprotein of infectious hematopoietic necrosis virus (IHNV). E. coli cells are transformed by pG8, whereby pure viral antigen is produced to provide a vaccine for the control of IHNV in fish.

Abstract: A controlled release powder containing discrete micro-particles for use in edible, pharmaceutical and other controlled release compositions is disclosed. The micro-particles have an average size in the range of from 0.1 to 125 .mu.m. Each of the micro-particles is in the form of a micromatrix of an active ingredient uniformly distributed in at least one non-toxic polymer. The micro-particles have a predetermined release of active ingredient when the dissolution rate thereof is measured according to the Paddle Method of U.S. Pharmacopoeia XX at 37.degree. C. and 75 r.p.m.

Abstract: Disclosed are (1) osteogenic devices comprising a matrix containing substantially pure natural-sourced mammalian osteogenic protein; (2) DNA and amino acid sequences for novel polypeptide chains useful as subunits of dimeric osteogenic proteins; (3) vectors carrying sequences encoding these novel polypeptide chains and host cells transfected with these vectors; (4) methods of producing these polypeptide chains using recombinant DNA technology; (5) antibodies specific for these novel polypeptide chains; (6) osteogenic devices comprising these recombinantly produced proteins in association with an appropriate carrier matrix; and (7) methods of using the osteogenic devices to mimic the natural course of endochondral bone formation in mammals.