Abstract:
This invention relates to a composition for the sustained release of dipyridamole which comprises (i) spheroid particles comprised of dipyridamole or crystallized salts thereof and pharmacologically acceptable acid or acid substance, and (ii) a coating surrounding said spheroid particles, said coating being comprised of from about 50 to 100 percent by weight of acid-insoluble lacquers soluble in intestinal juices and from about 0 to 50 percent by weight of lacquers insoluble in gastric and intestinal juices and said coating being present in an amount of from about 3 to 30 percent by weight, based on the weight of the spheroid particles, and to the preparation of such a composition.
Abstract:
Manufacture of 4-substituted oxazolinone-(5) compounds, which are intermediates for substituted aminoacids, by alkylation of 2-substituted or 3,4-disubstituted oxazolinone-(5) compounds in an aprotic solvent in the presence of a tertiary amine.
Abstract:
A process for producing a solubilized non-steroidal anti-inflammatory drug (NSAID) the process comprising the steps of: providing a mixture comprising solid NSAID and a first base which is selected from the group of bases which have a pH of at least 11 as 0.1 molar aqueous solution or dispersion, and reacting the NSAID and the first base in essentially dry state, solubilized NSAID obtainable by this process and pharmaceutical compositions comprising the same.
Abstract:
The invention relates to solid medicinal forms containing at least one active ingredient and at least one pharmaceutically compatible, water soluble drying agent which is selected from the group consisting of trimagnesium dicitrate and/or calcium chloride, the solid medicinal form having a drying loss of at most 6% and a relative equilibrium moisture content of 25% or less. The invention also relates to solid medicinal forms containing a moisture-sensitive active ingredient and trimagnesium dicitrate.
Abstract:
A system and method for injection molding conductive bonding material into a plurality of cavities in a non-rectangular mold is disclosed. The method comprises aligning a fill head with a non-rectangular mold. The non-rectangular mold includes a plurality of cavities. The fill head is placed in substantial contact with the non-rectangular mold. Rotational motion is provided to at least one of the non-rectangular mold and the fill head while the fill head is in substantial contact with the non-rectangular mold. Conductive bonding material is forced out of the fill head toward the non-rectangular mold. The conductive bonding material is provided into at least one cavity of the plurality of cavities contemporaneous with the at least one cavity being in proximity to the fill head.
Abstract:
A method for constructing a composite solder transfer moldplate for flip chip wafer bumping of a substrate, comprising the steps of coating at least one polymer layer onto a first side of a transparent plate, the plate having a thermal expansion coefficient similar to that of the substrate; and forming a multiplicity of cavities in a polymer layer on one side of the plate, each cavity being for receiving solder. A moldplate made by the method. The structure has required behavior through temperature excursions between room temperature and various solder molten temperatures.
Abstract:
Improved interconnects are produced by injection molded solder which fills mold arrays with molten solder so that columns that have much greater height to width aspect ratios greater than one are formed, rather than conventional flip chip bumps. The columns may have filler particles or reinforcing conductors therein. In the interconnect structures produced, the cost and time of a subsequent underfill step is reduced or avoided. The problem of incompatibility with optical interconnects between chips because underfills require high loading of silica fillers which scatter light, is solved, thus allowing flip chips to incorporate optical interconnects.
Abstract:
Disclosed is a new process that permits the transfer and reflow of solder features produced by Injection Molded Solder (IMS) from a mold plate to a solder receiving substrate without the use of flux. Several embodiments produce solder transfer and reflow separately or together and use either formic acid vapor or partial concentration of hydrogen, both in nitrogen, as the oxide reducing atmosphere. A final embodiment produces fluxless transfer and reflow in only nitrogen through the use of ultrasonic vibration between the solder filled mold plate and solder receiving substrate.
Abstract:
A method and apparatus for forming solder bumps by molten solder deposition into cavity arrays in a substrate immediately followed by solidification of molten solder such that precise replication of cavity volumes is consistently achieved in formed solder bump arrays. Various solder filling problems, such as those caused by surface tension and oxidation effects, are overcome by a combination of narrow molten Solder dispense slots and solidification of dispensed molten solder.