Patents by Inventor Michael M. Geoffrey

Michael M. Geoffrey 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).

  • Foundry binder of polyurethane, phenolic resin, polyisocyanate and epoxy resin
    Patent number: 5981622
    Abstract: Compositions and methods for improving the characteristics of foundry cores which includes adding to a foundry aggregate mixture polyurethane resin binder comprising epoxy resin and, preferably, paraffinic oil.
    Type: Grant
    Filed: November 28, 1997
    Date of Patent: November 9, 1999
    Assignee: Borden Chemical, Inc.
    Inventor: Michael M. Geoffrey
  • Bound multi-component sand additive
    Patent number: 5962567
    Abstract: Two or more sand additive particles are made to adhere to each other, using a binder. The finished product consists of free-flowing particles that are composed of the additive particles bound together by the binder. These bound additive particles may then be applied to sand, such as foundry sands, where, otherwise, multiple additions of additive might need to be made. The pH of the single additive particles can be controlled and separation of the additives due to different specific gravities can be avoided. Various mixtures of different additives are disclosed. Methods of controlling particle size of additive particles, tendency to generate dust, degrade tensile strength or control thermal expansion of foundry cores or molds by using bound additive particles are also disclosed.
    Type: Grant
    Filed: October 3, 1996
    Date of Patent: October 5, 1999
    Assignee: Borden Chemical, Inc.
    Inventors: Michael M. Geoffrey, Robert A. Laitar
  • Biphenyl additive for improvement in urethane foundry binders
    Patent number: 5852071
    Abstract: Compositions and methods for improving the characteristics of foundry cores which includes adding to the foundry aggregate mixture one or more biphenyl compounds.
    Type: Grant
    Filed: August 3, 1994
    Date of Patent: December 22, 1998
    Assignee: Borden Chemical, Inc.
    Inventor: Michael M. Geoffrey
  • Biphenyl additive for improvement in urethane foundry binders
    Patent number: 5792802
    Abstract: Compositions and methods for improving the characteristics of foundry cores which includes adding to the foundry aggregate mixture one or more biphenyl compounds.
    Type: Grant
    Filed: July 31, 1995
    Date of Patent: August 11, 1998
    Assignee: Borden Chemical, Inc.
    Inventor: Michael M. Geoffrey
  • Biphenyl additive for improvement in urethane foundry binders
    Patent number: 5744518
    Abstract: Compositions and methods for improving the characteristics of foundry cores which includes adding to the foundry aggregate mixture one or more biphenyl compounds.
    Type: Grant
    Filed: July 31, 1995
    Date of Patent: April 28, 1998
    Assignee: Borden Chemical, Inc.
    Inventor: Michael M. Geoffrey
  • Foundry binder of phenolic resole resin, polyisocyanate and epoxy resin
    Patent number: 5733952
    Abstract: Compositions and methods for improving the characteristics of foundry cores which includes adding to a foundry aggregate mixture polyurethane resin binder comprising epoxy resin and, preferably, paraffinic oil.
    Type: Grant
    Filed: October 18, 1995
    Date of Patent: March 31, 1998
    Assignee: Borden Chemical, Inc.
    Inventor: Michael M. Geoffrey
  • Bound multi-component sand additive
    Patent number: 5621036
    Abstract: Two or more sand additive particles are made to adhere to each other, using a binder. The finished product consists of free-flowing particles that are composed of the additive particles bound together by the binder. These bound additive particles may then be applied to sand, such as foundry sands, where, otherwise, multiple additions of additive might need to be made. The pH of the single additive particles can be controlled and separation of the additives due to different specific gravities can be avoided. Various mixtures of different additives are disclosed. Methods of controlling particle size of additive particles, tendency to generate dust, degrade tensile strength or control thermal expansion of foundry cores or molds by using bound additive particles are also disclosed.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: April 15, 1997
    Assignee: Borden Chemical, Inc.
    Inventors: Michael M. Geoffrey, Robert A. Laitar
  • Low free formaldehyde phenolic polyol formulation
    Patent number: 5264535
    Abstract: A resin is prepared by the reaction of a phenol, an aldehyde and an aliphatic hydroxy compound containing two or more hydroxy groups per molecule in the presence of a divalent metal ion catalyst. These resins react with polyisocyanates to form polyurethanes that are useful binders for foundry cores and molds.
    Type: Grant
    Filed: November 16, 1992
    Date of Patent: November 23, 1993
    Assignee: Acme Resin Corp.
    Inventors: Michael M. Geoffrey, Robert A. Laitar
  • Low free formaldehyde phenolic polyol formulation
    Patent number: 5189079
    Abstract: A resin is prepared by the reaction of a phenol, an aldehyde and an aliphatic hydroxy compound containing two or more hydroxy groups per molecule in the presence of a divalent metal ion catalyst. These resins react with polyisocyanates to form polyurethanes that are useful binders for foundry cores and molds.
    Type: Grant
    Filed: June 12, 1991
    Date of Patent: February 23, 1993
    Assignee: Acme Resin Corp.
    Inventors: Michael M. Geoffrey, Robert A. Laitar