Patents by Inventor Michael E. Brennan

Michael E. Brennan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10606893
    Abstract: Mechanisms are provided in which a first knowledge graph, comprising nodes representing entities and edges between nodes indicative of a relationship between the entities, is received. The mechanisms identify a candidate missing edge connecting a node of the first knowledge graph to another node not present in the first knowledge graph and evaluate the candidate missing edge to determine if the candidate missing edge should be added to the first knowledge graph. The mechanisms expand the first knowledge graph to include the candidate missing edge connecting the node to a newly added node that is newly added to the first knowledge graph, to thereby generate an expanded knowledge graph, in response to the evaluation indicating that the candidate missing edge should be added to the first knowledge graph. The mechanisms then perform an operation on the expanded knowledge graph to generate a knowledge output.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: March 31, 2020
    Assignee: International Business Machines Corporation
    Inventors: Paul E. Brennan, Scott R. Carrier, Michael L. Stickler
  • Patent number: 10490094
    Abstract: A technique for transforming questions for a question answering (QA) system includes clustering received questions by contextual accordance into a question set. A base lexical answer type (LAT) for the question set is determined. LATs of discordant questions in the question set are transformed to the base LAT. Answers for the questions in the question set are aggregated. The aggregated answers are then displayed.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: November 26, 2019
    Assignee: International Business Machines Corporation
    Inventors: Paul E. Brennan, Scott R. Carrier, Michael L. Stickler
  • Patent number: 4885390
    Abstract: Novel amino polyols made by alkoxylating ethylene glycol diamine bottoms products, such as triethylene glycol diamine bottoms products, and tetraethylene glycol diamine bottoms products are described. For example, these bottoms products, alone or together, maybe propoxylated in a non-catalytic reaction to give amino polyols that are useful in producing rigid polyurethane foams. The resultant foams have better K-factors and a higher percentage of closed cells than comparable foams made with conventional amino polyols.
    Type: Grant
    Filed: October 30, 1987
    Date of Patent: December 5, 1989
    Assignee: ARCO Chemical Technology, Inc.
    Inventors: George P. Speranza, Michael E. Brennan, Jiang-Jen Lin
  • Patent number: 4820810
    Abstract: Catalytic quantities of urea are used in the alkoxylation of aqueous sucrose to prepare low color polyols useful in rigid polyurethane foams.
    Type: Grant
    Filed: October 30, 1986
    Date of Patent: April 11, 1989
    Assignee: ARCO Chemical Technology, Inc.
    Inventors: Howard P. Klein, Michael E. Brennan
  • Patent number: 4681965
    Abstract: A class of Mannich condensates containing phosphorus prepared by reacting a phenol with formaldehyde and a primay amine, and then reacting the product with formaldehyde and a dialkyl phosphite. Useful applications include use as a fire retardant additive in polyurethane foams.
    Type: Grant
    Filed: August 8, 1985
    Date of Patent: July 21, 1987
    Assignee: Texaco Inc.
    Inventors: George P. Speranza, Michael E. Brennan, Robert A. Grigsby, Jr.
  • Patent number: 4654376
    Abstract: An improved method for preparing amino polyols is disclosed. The method is the Mannich condensation of phenol, formaldehyde and diethanolamine in a molar ratio of (1:1:1), and then alkoxylation with a mixture of ethylene oxide and propylene oxide in a weight ratio of about 5:95 to 20:80 to form an amino polyol of hydroxyl number 440 to 515.The method gives higher yields of aromatic amino polyols of lower viscosity than those of the comparative example.
    Type: Grant
    Filed: October 24, 1985
    Date of Patent: March 31, 1987
    Assignee: Texaco Inc.
    Inventors: Michael E. Brennan, Kenneth G. McDaniel, Howard P. Klein
  • Patent number: 4602091
    Abstract: Piperazine is substantially selectively converted to ethylenediamine and N-aminoethylpiperazine by catalytically reductively aminating piperazine in the presence of added hydrogen, ammonia and (optionally) water under reductive amination conditions selected to provide a piperazine conversion of not more than about 30%.
    Type: Grant
    Filed: January 25, 1984
    Date of Patent: July 22, 1986
    Assignee: Texaco Inc.
    Inventor: Michael E. Brennan
  • Patent number: 4602085
    Abstract: It has been discovered in accordance with the present invention that oxyalkylated derivatives of alkyl glucosides can be effectively reductively aminated by bringing the oxyalkylated alkyl glucoside feedstock into contact with a reductive amination catalyst in the presence of ammonia and hydrogen to provide derivatives containing both hydroxyl groups and amine groups. These derivatives are useful, for example, as gas scrubbing agents, raw materials for the preparation of corrosion inhibitors, epoxy curing agents, raw materials for the preparation of surfactants and as polyols for use in the preparation of polyurethanes.
    Type: Grant
    Filed: August 20, 1984
    Date of Patent: July 22, 1986
    Assignee: Texaco Inc.
    Inventors: Roger G. Duranleau, Michael E. Brennan
  • Patent number: 4547591
    Abstract: Disclosed is a process for preparing predominantly linear polyethylenepolyamines from the catalyzed reaction of (1) an ethyleneamine and an alkanolamine, (2) ethyleneamines or (3) an alkanolamine and ammonia. The catalyst employed is a silica-alumina catalyst. An acidic phosphorus cocatalyst may be used in conjunction with the silica-alumina catalyst.
    Type: Grant
    Filed: December 16, 1983
    Date of Patent: October 15, 1985
    Assignee: Texaco Inc.
    Inventors: Michael E. Brennan, James H. Templeton, Ernest L. Yeakey
  • Patent number: 4536522
    Abstract: The present invention is directed to the manufacture of polyols and polyurethanes using thiodialkylene glycols. More particularly, the present invention is directed to the manufacture of rigid polyurethane foam using novel polyols prepared by forming a condensation product of a polyethylene terephthalate with a low molecular weight glycol having a molecular weight of about 500 or less and a thiodialkylene glycol such as thiodiethylene glycol. The present invention is also directed to the use of thiodialkylene glycols as cross linking agents in the preparation of polyurethane foam from condensation products prepared by digesting a polyethylene terephthalate with a polyol having a molecular weight of about 500 or less such as a glycol or a triol.
    Type: Grant
    Filed: July 18, 1984
    Date of Patent: August 20, 1985
    Assignee: Texaco Inc.
    Inventors: Robert A. Grigsby, Jr., George P. Speranza, Michael E. Brennan, Ernest L. Yeakey
  • 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
  • Patent number: 4500655
    Abstract: This invention relates to polyols that can be used to prepare rigid foams, such polyols being prepared by reacting a propoxylation product with melamine and a lower alkylene carbonate. The propoxylation product (which can contain some ethylene oxide) is prepared by propoxylating a Mannich condensate prepared by reacting phenol or a C.sub.1 -C.sub.12 alkylphenol with formaldehyde and diethanolamine in the mole ratios of from 1:1:1 to about 1:3:3.
    Type: Grant
    Filed: December 29, 1983
    Date of Patent: February 19, 1985
    Assignee: Texaco Inc.
    Inventor: Michael E. Brennan
  • Patent number: 4489178
    Abstract: The invention relates to Mannich condensates of phenol, formaldehyde and diethanolamine in which a minor amount (e.g., less than 1%) of melamine is dissolved subsequent to alkoxylation with propylene oxide or a mixture of propylene oxide and ethylene oxide. The thus-prepared alkoxylated Mannich condensates are then used as all or a part of the polyol component in making a rigid polyurethane foam having improved fire retardancy properties.
    Type: Grant
    Filed: October 25, 1983
    Date of Patent: December 18, 1984
    Assignee: Texaco Inc.
    Inventors: Michael E. Brennan, George P. Speranza
  • Patent number: 4487852
    Abstract: The invention relates to Mannich condensates of phenol, formaldehyde and an amine mixture consisting of diethanolamine and melamine which is then alkoxylated with propylene oxide or a mixture of propylene oxide and ethylene oxide. The thus-prepared alkoxylated Mannich condensates are then used as all or a part of the polyol component in making a rigid polyurethane foam having improved fire retardancy properties.
    Type: Grant
    Filed: October 25, 1983
    Date of Patent: December 11, 1984
    Assignee: Texaco Inc.
    Inventors: Michael E. Brennan, George P. Speranza
  • Patent number: 4485196
    Abstract: A mixture of aromatic polyester polyols useful in preparing rigid foams is described. The polyols are made by first reacting recycled polyethylene terephthalate (PET) scrap with an alkylene glycol to form a reaction product which is then reacted with an alkylene oxide, such as propylene oxide. The resultant mixture of aromatic polyester polyols is a homogeneous liquid which does not precipitate solids upon standing, as do some prior art PET-derived polyols.
    Type: Grant
    Filed: September 26, 1983
    Date of Patent: November 27, 1984
    Assignee: Texaco Inc.
    Inventors: George P. Speranza, Robert A. Grigsby, Jr., Michael E. Brennan
  • Patent number: 4485195
    Abstract: This invention relates to polyols that can be used to prepare rigid foams having improved fire retardancy properties, such polyols being prepared by alkoxylating with propylene oxide (which can contain some ethylene oxide) a reaction product prepared by heating a mixture of a Mannich condensate, a minor amount of melamine and 1 to 6 mols of formaldehyde, based on the melamine; the Mannich condensate having been prepared by reacting phenol or a C.sub.1 -C.sub.12 alkylphenol with formaldehyde and diethanolamine in the mol ratios of from 1:1:1 to about 1:3:3.
    Type: Grant
    Filed: October 25, 1983
    Date of Patent: November 27, 1984
    Assignee: Texaco Inc.
    Inventors: Michael E. Brennan, George P. Speranza
  • Patent number: 4469823
    Abstract: A method for producing a flexible polyurethane foam from reacting a polyol blend with a polyisocyanate in the presence of a polyurethane formation catalyst is described. The polyol blend contains from 0.5 to 10 wt. % of an aromatic polyester polyol extender typically used in rigid foams. The polyol extender is made from dibasic acids, alkylene glycols and recycled polyethylene terephthalate. Commercial extenders cause flexible foams to shrink, a problem not found in the foams of this invention.
    Type: Grant
    Filed: July 28, 1983
    Date of Patent: September 4, 1984
    Assignee: Texaco Inc.
    Inventors: Ernest L. Yeakey, Robert L. Zimmerman, Michael E. Brennan
  • Patent number: 4469824
    Abstract: Terephthalic esters may be made to remain in a liquid form by reacting recycled or scrap polyethylene terephthalate (PET) with diethylene glycol and one or more oxyalkylene glycols and stripping out some of the ethylene glycol present. The mole ratio of glycols to scrap PET should also be greater than 1.2:1. This process keeps any diesters from separating out of the solution as solids. These liquid terephthalic esters are useful as polyol extenders in rigid polyurethane foams and as the sole polyol component in polyisocyanurate foams.
    Type: Grant
    Filed: November 18, 1983
    Date of Patent: September 4, 1984
    Assignee: Texaco, Inc.
    Inventors: Robert A. Grigsby, Jr., George P. Speranza, Michael E. Brennan
  • Patent number: 4465793
    Abstract: A novel class of aromatic polyester polycarbonate polyols is described. The polycarbonate polyols are made by reacting an alkylene carbonate with a residue from polyethylene terephthalate (PET) manufacture over a polycarbonate formation catalyst such as potassium stannate. Use of a PET waste stream helps keep the cost of the polycarbonate polyols low. These materials can be used to replace the polyol portion in the preparation of polyisocyanurate foams.
    Type: Grant
    Filed: May 5, 1983
    Date of Patent: August 14, 1984
    Assignee: Texaco Inc.
    Inventors: Michael E. Brennan, George P. Speranza
  • Patent number: 4448997
    Abstract: A method of preparing predominantly linear polyethylenepolyamines from ethylenediamine and monoethanolamine reactants with an aluminum phosphate catalyst prepared from alumina, phosphoric acid, ammonium hydroxide and water is disclosed.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: May 15, 1984
    Assignee: Texaco Inc.
    Inventor: Michael E. Brennan