Patents Represented by Attorney David L. Mossman

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  • Semiconductor packaging and method
    Patent number: 4672421
    Abstract: A mounting means for a semiconductor integrated circuit, the mounting means comprising a semiconductor material having a mounting surface as one major surface thereof, a semiconductor integrated circuit mounted on the major surface of the semiconductor material, and means for electrically connecting the integrated circuit to the semiconductor material. The mounting means has a coefficient of thermal expansion similar to the semiconductor integrated circuit mounted thereon.
    Type: Grant
    Filed: May 15, 1986
    Date of Patent: June 9, 1987
    Assignee: Motorola, Inc.
    Inventor: Paul T. Lin
  • Method for prevention of autodoping of epitaxial layers
    Patent number: 4662956
    Abstract: A method for the prevention of dopant diffusion from the back side of a doped semiconductor substrate during epitaxial layer growth. The entire surface of the substrate is first covered with a cleanly etchable material. Around the entire first layer is formed a second dopant diffusion barrier layer. The front sides of the layers are then selectively etched away to expose the front side of the substrate upon which the epitaxial layer will be grown without contamination of dopant diffusion from the sealed back side of the substrate.
    Type: Grant
    Filed: April 1, 1985
    Date of Patent: May 5, 1987
    Assignee: Motorola, Inc.
    Inventors: Scott S. Roth, Joe Steinberg, H. Scott Morgan
  • Low cost integrated circuit bonding process
    Patent number: 4661192
    Abstract: A low cost process for bonding a plurality of integrated circuit die to a variety of die support frames using existing, readily available equipment. Tape automatic bonding (TAB) processes offer a number of new possibilities in the assembly and packaging of integrated circuits. However, the investigation of TAB techniques or the use of TAB techniques on low volume parts is prohibited by the high cost of "bumping" or putting interconnection balls on the chip or the tape leads. The process permits placing balls on the bonding pads of a plurality of die by a wire bonder, cutting off the wire, planarizing the balls, coating the planarized region with a conductive epoxy and then registering and bonding the die to corresponding conductive patterns on die support frames.
    Type: Grant
    Filed: August 22, 1985
    Date of Patent: April 28, 1987
    Assignee: Motorola, Inc.
    Inventor: Michael B. McShane
  • Surface mountable integrated circuit packages having solder bearing leads
    Patent number: 4661887
    Abstract: An integrated circuit package having a plurality of leads capable of holding a quantity of solder paste prior to bonding to a printed circuit board or other substrate. The solder paste bearing structure may be straight or spiral grooves, or even a slot or roughened surface, running down at least the lower length of the leads as long as some mechanism is present which will first hold the solder paste or other electrically conductive binder on the lead and then deliver the binder to the end of the lead to produce an electrical and structural bond in a binder flowing operation. Application of the solder paste to the leads is accomplished by simply dipping the package leads into the paste thereby eliminating the need to make a solder mask for the substrate as well as the task of aligning the mask to the substrate.
    Type: Grant
    Filed: October 31, 1985
    Date of Patent: April 28, 1987
    Assignee: Motorola, Inc.
    Inventor: Paul T. Lin
  • Operand size mechanism for control simplification
    Patent number: 4649477
    Abstract: A data processor having size selector in a controller for explicitly selecting the size of an operand independent of an instruction in an instruction register, together with means for selectively enabling the instruction register or other functional block, or a size selector to select the size of the operand. A size bus and a size multiplexer are also provided to route the size instructions. By using this size mechanism, the amount of sequencing and control logic is significantly reduced from prior data processors. The mechanism allows operations of different sizes to be performed during a single instruction while allowing instruction dependent sizing to be done residually.
    Type: Grant
    Filed: June 27, 1985
    Date of Patent: March 10, 1987
    Assignee: Motorola, Inc.
    Inventors: Douglas B. MacGregor, William C. Moyer
  • Heat exchange apparatus for high temperature LPCVD equipment
    Patent number: 4630669
    Abstract: A heat exchanger apparatus having two sleeves which fit together to seal a sinuous heat exchange fluid channel between them where the channel is open along its length prior to assembly. The sleeves may be made removable to permit easy cleaning of the heat exchange fluid channel. The heat exchange fluid channel may thus be directly cleaned along its entire length in contrast to conventional heat exchangers employing tubes, where the tube interior can be accessed only from the ends. In one embodiment, the channel has a rectangular cross-section to enhance the heat exchange capability of the apparatus.
    Type: Grant
    Filed: August 15, 1985
    Date of Patent: December 23, 1986
    Assignee: Motorola, Inc.
    Inventors: Peter H. Kessler, Wilson D. Calvert, Sr., Faivel S. Pintchovski
  • Selective titanium silicide formation
    Patent number: 4619038
    Abstract: A process for selective formation of a titanium silicide, TiSi.sub.2, layer at high temperatures and low pressures via chemical vapor deposition during semiconductor device manufacturing. At 700.degree. to 1000.degree. C. and 0.5 to 1.5 torr, TiSi.sub.2 deposits only on exposed silicon or polysilicon surfaces and not at all on neighboring silicon dioxide. The process provides an excellent means of providing low resistivity interconnects without a mask step or subsequent annealing and removal of unreacted titanium.
    Type: Grant
    Filed: August 15, 1985
    Date of Patent: October 28, 1986
    Assignee: Motorola, Inc.
    Inventor: Faivel S. Pintchovski
  • Parallel roller tool for unloading semiconductor device sockets
    Patent number: 4589201
    Abstract: A parallel roller tool for quickly and carefully unloading groups of semiconductor devices from spring-biased semiconductor device sockets. The parallel roller tool has a plurality of roller support plates which support the rollers and may serve to align them with various socket rows. Use of this roller tool permits rapid unloading of trays containing semiconductor devices without overstressing the trays or touching the semiconductor devices with the tool.
    Type: Grant
    Filed: April 17, 1985
    Date of Patent: May 20, 1986
    Assignee: Motorola, Inc.
    Inventors: Carlos A. Kissinger, Raun L. Goode
  • Butadiene reductive dimerization using a platinum catalyst and polymeric amine promoter
    Patent number: 4536604
    Abstract: A method for preparing 1,6-octadiene by reacting 1,3-butadiene with formic acid in the presence of a platinum(II) catalyst and a polymeric tertiary amine catalyst is described. The combination of a platinum(II) catalyst such as platinum acetylacetonate with a polymeric tertiary amine promoter such as AMBERLYST.RTM. A21 macroreticular ion-exchange resin gives a high selectivity to 1,6-octadiene as opposed to the 1,7-octadiene form. A reaction temperature between 50.degree. and 150.degree. C. is preferred, and carbon dioxide and a solvent may also be employed.
    Type: Grant
    Filed: March 15, 1984
    Date of Patent: August 20, 1985
    Assignee: Texaco Inc.
    Inventors: Jiang-Jen Lin, David C. Alexander
  • Preparation of 2-hydroxytetrahydrofuran by hydroformylation of allyl alcohol using ketone solvents
    Patent number: 4533742
    Abstract: A process is disclosed for preparing products such as 2-hydroxytetrahydrofuran which comprises contacting unsaturated compounds such as allyl alcohol with carbon monoxide and hydrogen in the presence of a rhodium carbonyl catalyst and a ketone solvent system. Allyl alcohol conversions of 100% and selectivities to 2-hydroxytetrahydrofuran of 96% are achievable under certain conditions. Preferred ketone solvents are acetophenone and 2-undecanone. 2-Hydroxytetrahydrofuran is an important precursor to manufacture of 1,4-butanediol.
    Type: Grant
    Filed: February 2, 1984
    Date of Patent: August 6, 1985
    Assignee: Texaco Inc.
    Inventors: Jiang-Jen Lin, John F. Knifton
  • Bi-solvent system for the hydroformylation of allyl alcohol using a rhodium catalyst
    Patent number: 4529808
    Abstract: A process is disclosed for preparing products such as 2-hydroxytetrahydrofuran which comprises contacting unsaturated compounds such as allyl alcohol with carbon monoxide and hydrogen in the presence of a rhodium carbonyl catalyst and a bi-solvent system. The bi-solvent system includes an aromatic solvent and an amide solvent and may be materials such as p-xylene and acetamide. Such a system provides for easy catalyst recovery since the rhodium catalyst is selectively soluble in the p-xylene whereas the desired product is conversely selectively soluble in the acetamide phase.
    Type: Grant
    Filed: February 2, 1984
    Date of Patent: July 16, 1985
    Assignee: Texaco Inc.
    Inventors: Jiang-Jen Lin, John F. Knifton
  • Acetaldehyde production from synthesis gas
    Patent number: 4525481
    Abstract: Acetaldehyde is prepared by contacting hydrogen and carbon monoxide with a catalyst system comprising an iodide-free ruthenium powder, an iodide-free quaternary phosphonium or ammonium base or salt and a halide-free cobalt-containing compound, such as cobalt(III) acetylacetonate or dicobalt octacarbonyl. Conducting the reaction in a substantially inert solvent such as p-dioxane is preferred.
    Type: Grant
    Filed: February 27, 1984
    Date of Patent: June 25, 1985
    Assignee: Texaco Inc.
    Inventors: Jiang-Jen Lin, John F. Knifton
  • Preparation of polyaddition products of Mannich condensates and polyisocyanates in polyols and their use in polyurethanes
    Patent number: 4525488
    Abstract: A stable dispersion of polyaddition products (also called polyurethane polymer polyols) may be made by reacting a Mannich condensate with an organic polyisocyanate in a polyether polyol. The Mannich condensate is made by reacting a phenol with an alkanolamine and formaldehyde and should not be subsequently water-stripped or alkoxylated. If the Mannich condensate has its water content removed, the ultimate dispersion will be unstable and will phase separate. These dispersions are useful in the production of polyurethane foams.
    Type: Grant
    Filed: September 13, 1984
    Date of Patent: June 25, 1985
    Assignee: Texaco Inc.
    Inventors: Michael Cuscurida, George P. Speranza
  • Polymer polyols from partially reacted polyamines
    Patent number: 4523025
    Abstract: A polymer polyol made by the reaction of a partially reacted polyamine with an organic polyisocyanate in a polyether polyol solvent of about 3,000 to 8,000 molecular weight is disclosed. Preferably, the polyisocyanate is reacted with a partially alkoxylated polyoxyalkylenediamine. This polymer polyol may be used in the manufacture of flexible polyurethane foams with improved properties. The polymer polyols are more stable than those made by other procedures.
    Type: Grant
    Filed: October 21, 1983
    Date of Patent: June 11, 1985
    Assignee: Texaco Inc.
    Inventors: Michael Cuscurida, Howard P. Klein
  • Epoxy resin modified polyether polyols from mixed initiators
    Patent number: 4521572
    Abstract: Novel modified polyether polyols made by first optionally alkoxylating, subsequent reaction with epoxy resins and final alkoxylation of mixtures of initiators is described. The initiator mixture is made up of about 60 to 90 wt. % of a partially alkoxylated trifunctional initiator and 10 to 40 wt. % of a secondary partially alkoxylated initiator having an active hydrogen functionality of from 4 to 8. Preferably, the alkylene oxide component is a blend of ethylene oxide and propylene oxide, and the resulting modified polyol molecules have 0.25 to 2.5 wt. % internally located epoxy resin. Flexible polyurethane foams made from these polyether polyols have improved load bearing properties as compared with those made from prior art polyols.
    Type: Grant
    Filed: February 22, 1984
    Date of Patent: June 4, 1985
    Assignee: Texaco Inc.
    Inventors: Michael Cuscurida, Bruce W. Peterson
  • Polymer polyols from alkylene oxide adducts of alkanolamines
    Patent number: 4518778
    Abstract: A polymer polyol made by the reaction of an alkylene oxide adduct of a hydroxyl-containing amine, a polyether polyol of about 3000 to 8000 molecular weight and an organic polyisocyanate is disclosed. This polymer polyol may be used in the manufacture of flexible polyurethane foams. The polymer polyols are more stable than those made by other procedures.
    Type: Grant
    Filed: July 14, 1983
    Date of Patent: May 21, 1985
    Assignee: Texaco Inc.
    Inventor: Michael Cuscurida
  • Flexible polyurethane foams made from polyether polyols modified with epoxy resin-diamine adducts
    Patent number: 4518720
    Abstract: Flexible polyurethane foams having improved properties and made from modified polyether polyols are described. The polyether polyols are modified with adducts of epoxy resins, such as the diglycidyl ether of Bisphenol A, and diamines, such a polyoxypropylenediamine. The resulting modified polyether polyols have a molecular weight of from about 2,000 to 7,000. The mole ratio of epoxy equivalents to amine equivalents in the adduct ranges from about 2/1 to 10/1.
    Type: Grant
    Filed: June 11, 1984
    Date of Patent: May 21, 1985
    Assignee: Texaco Inc.
    Inventors: Michael Cuscurida, Harold G. Waddill, Bruce W. Peterson
  • Cycloalkane epoxides produced by air oxidation of cycloalkenes over oxide catalysts
    Patent number: 4517374
    Abstract: A process for the production of cycloalkane epoxides from cycloalkenes in the presence of an oxide catalyst, oxygen and a carboxylate ion source via air oxidation is described. The oxide catalyst may have as a cation boron, chromium, iron, nickel, copper, zinc or terbium or mixtures thereof. Combination catalysts such as ferric oxide/zinc oxide and nickel oxide/copper oxide/chromium oxide/boric oxide complexes are also found to be useful. The reaction is conducted at a temperature in the range of 50.degree. to 150.degree. C. and a pressure of one atmosphere or greater. Cycloalkane epoxides are useful in the preparation of resins, plasticizers, etc.
    Type: Grant
    Filed: July 1, 1983
    Date of Patent: May 14, 1985
    Assignee: Texaco Inc.
    Inventors: John R. Sanderson, Lewis W. Watts, Jr., Terry L. Renken
  • Reaction injection molded elastomers containing low molecular weight organic acids
    Patent number: 4513133
    Abstract: The invention relates to reaction injection molded elastomers of improved green strength containing polyurea linkages derived from high molecular weight amine terminated polyethers, a chain extender, a polyisocyanate and a low molecular weight organic acid. The reaction injection molded (RIM) elastomers of this invention are useful, for example, as automobile body parts.
    Type: Grant
    Filed: February 13, 1984
    Date of Patent: April 23, 1985
    Assignee: Texaco Inc.
    Inventor: Richard J. G. Dominguez
  • Aromatic polyols made from polyethylene terephthalate scrap, glycols and aromatic carbonyl-containing compounds
    Patent number: 4506090
    Abstract: Mixtures of aromatic polyols containing ester functionalities suitable for use as polyol extenders in rigid foams prepared by reacting aromatic carbonyl-containing compounds with an alkylene glycol, the reaction product of which is reacted with recycled polyethylene terephthalate are described. Surprisingly, the process is non-catalytic. These novel polyols may be blended with conventional polyols to yield excellent rigid foams, thus serving as useful polyol extenders.
    Type: Grant
    Filed: July 15, 1983
    Date of Patent: March 19, 1985
    Assignee: Texaco Inc.
    Inventors: Michael E. Brennan, George P. Speranza