Patents by Inventor Donald Martin McPherson

Donald Martin McPherson 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: 8480802
    Abstract: A cementitious compostion for high density, low porosity sheet-form building materials having solid surfaces is comprised of cement, pozzolans, and a high percentage of fine and/or coarse glass aggregate.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: July 9, 2013
    Assignee: Polycor Vetrazzo, Inc.
    Inventor: Donald Martin McPherson
  • Publication number: 20120234208
    Abstract: A cementitious compostion for high density, low porosity sheet-form building materials having solid surfaces is comprised of cement, pozzolans, and a high percentage of fine and/or coarse glass aggregate.
    Type: Application
    Filed: March 19, 2012
    Publication date: September 20, 2012
    Applicant: Polycor Vetrazzo, Inc.
    Inventor: Donald Martin McPherson
  • Patent number: 8236230
    Abstract: A method of producing a sheet-form material having an exposed solid surface comprises pre-mixing cement with at least one pozzolan to provide a cement/pozzolan mixture with a high pozzolan to cement ratio, adding to the cement/pozzolan mixture an aqueous solution comprised of water and a high range water reducer to produce a cement/pozzolan dough-like substance, adding and mixing a sufficient quantity of glass aggregate to said cement/pozzolan dough-like substance to produce a moldable composition, wherein, after adding and mixing in the glass aggregate, the pozzolan is present in the composition at about 5% to about 20% by weight, the cement is present in the composition at about 3% to about 20% by weight, and the aggregate glass is by weight a relatively high percentage of the composition. The moldable composition is placed into a mold and vibrated, and is allowed to cure.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: August 7, 2012
    Assignee: Polycor Vetrazzo, Inc.
    Inventor: Donald Martin McPherson
  • Patent number: 8137454
    Abstract: A cementitious composition for high density, low porosity sheet-form building materials having solid surfaces is comprised of cement, pozzolans, and a high percentage of fine and/or coarse glass aggregate.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: March 20, 2012
    Assignee: Polycor Vetrazzo, Inc.
    Inventor: Donald Martin McPherson
  • Publication number: 20110290154
    Abstract: A cementitious composition for high density, low porosity sheet-form building materials having solid surfaces is comprised of cement, pozzolans, and a high percentage of fine and/or coarse glass aggregate.
    Type: Application
    Filed: August 12, 2011
    Publication date: December 1, 2011
    Applicant: POLYCOR VETRAZZO, INC.
    Inventor: Donald Martin McPherson
  • Publication number: 20110037200
    Abstract: A method of producing a sheet-form material having an exposed solid surface comprises pre-mixing cement with at least one pozzolan to provide a cement/pozzolan mixture with a high pozzolan to cement ratio, adding to the cement/pozzolan mixture an aqueous solution comprised of water and a high range water reducer to produce a cement/pozzolan dough-like substance, adding and mixing a sufficient quantity of glass aggregate to said cement/pozzolan dough-like substance to produce a moldable composition, wherein, after adding and mixing in the glass aggregate, the pozzolan is present in the composition at about 5% to about 20% by weight, the cement is present in the composition at about 3% to about 20% by weight, and the aggregate glass is by weight a relatively high percentage of the composition. The moldable composition is placed into a mold and vibrated, and is allowed to cure.
    Type: Application
    Filed: July 23, 2010
    Publication date: February 17, 2011
    Applicant: POLYCOR VETRAZZO, INC.
    Inventor: Donald Martin McPherson
  • Patent number: 7771529
    Abstract: A cementitious composition for high density, low porosity sheet-form building materials having solid surfaces is comprised of cement, pozzolans, and a high percentage of fine and/or coarse glass aggregate, preferably present in an amount which by weight is at least 60% of the composition. The cement content is relatively low, preferably in the range of about 3% to 20% by weight, and the pozzolan to cement ratio is relatively high, preferably equal to or greater than unity, but which can suitably be in the range from 0.25 to 4. The composition preferably uses recycled glass and preferably has a high recycle content. The sheet-form material made in accordance with the invention can be used to provide exposed solid surfaces, for example, surfaces for shower walls and floors, counter-tops, table-tops, and the like, where low hydraulic permeability and high compressive and tensile strength are desired.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: August 10, 2010
    Assignee: Polycor Vetrazzo, Inc.
    Inventor: Donald Martin McPherson