TREA

Steel tubes

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Industry

  • CPC
  • B28B21/58
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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B28Stoneworking B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL B28B21/00Methods or machines specially adapted for the production of tubular articles

Current Industry

B28B21/58Steel tubes
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Pre-stressed concrete pipe
    • Patent number 11,555,562
    • Issue date Jan 17, 2023
    • Ming C. Kuo
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Liner for concrete article
    • Patent number 9,605,777
    • Issue date Mar 28, 2017
    • HawkeyePedershaab Concrete Technologies, Inc.
    • Claudio Subacchi
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Vibration-resistant reinforced concrete watertight pipe and method...
    • Patent number 8,622,093
    • Issue date Jan 7, 2014
    • Sun-Am R&D Co., Ltd.
    • Jung Suk Lee
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Method of forming the primary core of a prestressed concrete pipe
    • Patent number 4,600,548
    • Issue date Jul 15, 1986
    • Vinen Corp.
    • Vito Nenna
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Method of casting beveled pipe
    • Patent number 4,101,622
    • Issue date Jul 18, 1978
    • Ameron, Inc.
    • Frank M. Wells
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    2596490
    • Patent number 2,596,490
    • Issue date May 13, 1952
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    2348477
    • Patent number 2,348,477
    • Issue date May 9, 1944
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    2309903
    • Patent number 2,309,903
    • Issue date Feb 2, 1943
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    2224419
    • Patent number 2,224,419
    • Issue date Dec 10, 1940
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    2102968
    • Patent number 2,102,968
    • Issue date Dec 21, 1937
    • B28 - WORKING CEMENT, CLAY, OR STONE

Patents Applicationslast 30 patents