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Withdrawn HPDs

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  1. Expired: Polymer Brick/Lithic Industries Inc./2023-03-05

    Open the PDF · HPD 34190

    HPD has expired. Expiration Date: 2026-03-05

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    The polymer brick is manufactured using the byproduct generated from the core competency at the quarry of mining and fabricating finshed limestone materials. The brick is comprised of the byproduct and a proprietary polymer that acts as…

  2. Expired: Brixx Modular Bricks and Pavers/Pittsburgh Mineral & Environmental Technology, Inc./2022-11-21

    Open the PDF · HPD 33686

    HPD has expired. Expiration Date: 2025-11-15

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    Pittsburgh Mineral & Environmental Technology, Inc. (PMET) has developed the Brixx technology to produce modular bricks and pavers. The products covered under this certification primarily consist of fly ash, bottom ash, and hydrated lime…