starting from sheet material

Patents Grantslast 30 patents

  • Information Patent Grant

    Tapered spiral welded structure

    • Patent number 11,834,856
    • Issue date Dec 5, 2023
    • Keystone Tower Systems, Inc.
    • Eric D. Smith
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Spiral forming

    • Patent number 11,731,181
    • Issue date Aug 22, 2023
    • Keystone Tower Systems, Inc.
    • Eric D. Smith
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Tapered structure construction

    • Patent number 11,571,727
    • Issue date Feb 7, 2023
    • Keystone Tower Systems, Inc.
    • Eric D. Smith
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Sheet transitioning in spiral formed structures

    • Patent number 11,529,661
    • Issue date Dec 20, 2022
    • Keystone Tower Systems, Inc.
    • Rosalind K. Takata
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Control system and method for tapered structure construction

    • Patent number 11,364,527
    • Issue date Jun 21, 2022
    • Keystone Tower Systems, Inc.
    • Rosalind K. Takata
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Spiral forming

    • Patent number 11,213,872
    • Issue date Jan 4, 2022
    • Keystone Tower Systems, Inc.
    • Eric D. Smith
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method of producing shaped article, tooling, and tubular shaped art...

    • Patent number 11,148,183
    • Issue date Oct 19, 2021
    • Nippon Steel Corporation
    • Masahiko Sato
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Tapered structure construction

    • Patent number 10,974,298
    • Issue date Apr 13, 2021
    • Keystone Tower Systems, Inc.
    • Eric D. Smith
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Tapered spiral welded structure

    • Patent number 10,895,088
    • Issue date Jan 19, 2021
    • Keystone Tower Systems, Inc.
    • Eric D. Smith
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Sheet transitioning in spiral formed structures

    • Patent number 10,807,136
    • Issue date Oct 20, 2020
    • Keystone Tower Systems, Inc.
    • Rosalind K. Takata
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Spiral forming

    • Patent number 10,493,509
    • Issue date Dec 3, 2019
    • Keystone Tower Systems, Inc.
    • Eric D. Smith
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Sheet transitioning in spiral formed structures

    • Patent number 10,486,212
    • Issue date Nov 26, 2019
    • Keystone Tower Systems, Inc.
    • Rosalind K. Takata
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Sheet transitioning in spiral formed structures

    • Patent number 10,201,841
    • Issue date Feb 12, 2019
    • Keystone Tower Systems, Inc.
    • Rosalind K. Takata
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Tapered structure construction

    • Patent number 10,195,653
    • Issue date Feb 5, 2019
    • Keystone Tower Systems, Inc.
    • Eric D. Smith
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Tapered spiral welded structure

    • Patent number 10,060,149
    • Issue date Aug 28, 2018
    • Keystone Tower Systems, Inc.
    • Eric D. Smith
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Grant

    Method of manufacturing a sub-muffler outer cylinder

    • Patent number 10,016,801
    • Issue date Jul 10, 2018
    • Toyota Jidosha Kabushiki Kaisha
    • Hideki Homma
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method for manufacturing refrigerant guide tube of heat exchanger,...

    • Patent number 9,885,521
    • Issue date Feb 6, 2018
    • SANHUA (HANGZHOU) MICRO CHANNEL HEAT EXCHANGER CO., LTD.
    • Qiang Gao
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Tapered spiral welded structure

    • Patent number 9,475,153
    • Issue date Oct 25, 2016
    • Keystone Tower Systems, Inc.
    • Eric D. Smith
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Method of manufacturing pipe with different diameter along a longit...

    • Patent number 9,327,327
    • Issue date May 3, 2016
    • JFE Steel Corporation
    • Toyohisa Shinmiya
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Tapered structure construction

    • Patent number 9,302,303
    • Issue date Apr 5, 2016
    • Keystone Tower Systems, Inc.
    • Eric D. Smith
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Process and apparatus for producing a hollow body, and hollow body

    • Patent number 9,283,602
    • Issue date Mar 15, 2016
    • ThyssenKrupp Steel Europe AG
    • Thomas Flehmig
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Tapered structure construction

    • Patent number 9,266,157
    • Issue date Feb 23, 2016
    • Keystone Tower Systems, Inc.
    • Eric D. Smith
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Tower production method

    • Patent number 9,168,576
    • Issue date Oct 27, 2015
    • Uztek Endustri Tesisleri Insaat Imalat Ve Montaj Sanayi Ve Ticaret Limited Si...
    • Cevdet Unan
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Process of producing profiles whose cross-section is variable in th...

    • Patent number 9,040,134
    • Issue date May 26, 2015
    • Muhr und Bender KG
    • Andreas Hauger
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Tapered spiral welded structure

    • Patent number 8,720,153
    • Issue date May 13, 2014
    • Keystone Tower Systems, Inc.
    • Eric Smith
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Energy absorber for a bumper assembly of a vehicle and method for t...

    • Patent number 8,376,427
    • Issue date Feb 19, 2013
    • Autotech Engineering A.I.E.
    • Francesc Perarnau Ramos
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Sheet metal fabrication system

    • Patent number 8,285,413
    • Issue date Oct 9, 2012
    • International Training Institute for the Sheet Metal and Air Conditioning Ind...
    • James R. Shoulders
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method and apparatus for manufacturing welded tapered tubes

    • Patent number 7,918,380
    • Issue date Apr 5, 2011
    • Kenneth R. Letzkus
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Method for producing from a metal sheet a hollow profile which is l...

    • Patent number 7,637,135
    • Issue date Dec 29, 2009
    • ThyssenKrupp Steel Europe AG
    • Lothar Hömig
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method for forming a complex-shaped tubular structure

    • Patent number 7,484,298
    • Issue date Feb 3, 2009
    • GM Global Technology Operations, Inc.
    • Spyros P. Mellas
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS

Patents Applicationslast 30 patents

  • Information Patent Application

    SPIRAL FORMING

    • Publication number 20240082899
    • Publication date Mar 14, 2024
    • Keystone Tower Systems, Inc.
    • Eric D. Smith
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    METHOD AND APPARATUS FOR MANUFACTURING METAL PIPE

    • Publication number 20230271240
    • Publication date Aug 31, 2023
    • NAKATA MANUFACTURING CO. , LTD.
    • Tomoyasu NAKANO
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    TAPERED STRUCTURE CONSTRUCTION

    • Publication number 20230249236
    • Publication date Aug 10, 2023
    • Keystone Tower Systems, Inc.
    • Eric D. Smith
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    SHEET TRANSITIONING IN SPIRAL FORMED STRUCTURES

    • Publication number 20230201901
    • Publication date Jun 29, 2023
    • Keystone Tower Systems, Inc.
    • Rosalind K. Takata
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    CONTROL SYSTEM AND METHOD FOR TAPERED STRUCTURE CONSTRUCTION

    • Publication number 20220297175
    • Publication date Sep 22, 2022
    • Keystone Tower Systems, Inc.
    • Rosalind K. TAKATA
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    METHOD FOR PRODUCING A TOWER SEGMENT AND TOWER SEGMENT

    • Publication number 20220280990
    • Publication date Sep 8, 2022
    • WOBBEN PROPERTIES GMBH
    • Albrecht BRENNER
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    SPIRAL FORMING

    • Publication number 20220080484
    • Publication date Mar 17, 2022
    • Keystone Tower Systems, Inc.
    • Eric D. Smith
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    TAPERED STRUCTURE CONSTRUCTION

    • Publication number 20210213501
    • Publication date Jul 15, 2021
    • Keystone Tower Systems, Inc.
    • Eric D. Smith
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    TAPERED SPIRAL WELDED STRUCTURE

    • Publication number 20210115690
    • Publication date Apr 22, 2021
    • Keystone Tower Systems, Inc.
    • Eric D. Smith
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    SHEET TRANSITIONING IN SPIRAL FORMED STRUCTURES

    • Publication number 20210023598
    • Publication date Jan 28, 2021
    • Keystone Tower Systems, Inc.
    • Rosalind K. Takata
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    SHEET TRANSITIONING IN SPIRAL FORMED STRUCTURES

    • Publication number 20200171558
    • Publication date Jun 4, 2020
    • Keystone Tower Systems, Inc.
    • Rosalind K. Takata
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    SPIRAL FORMING

    • Publication number 20190160505
    • Publication date May 30, 2019
    • Keystone Tower Systems, Inc.
    • Eric D. Smith
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    SHEET TRANSITIONING IN SPIRAL FORMED STRUCTURES

    • Publication number 20190151920
    • Publication date May 23, 2019
    • Keystone Tower Systems, Inc.
    • Rosalind K. Takata
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    TAPERED SPIRAL WELDED STRUCTURE

    • Publication number 20190063101
    • Publication date Feb 28, 2019
    • Keystone Tower Systems, Inc.
    • Eric D. Smith
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    TAPERED STRUCTURE CONSTRUCTION

    • Publication number 20180133769
    • Publication date May 17, 2018
    • Keystone Tower Systems, Inc.
    • Eric D. Smith
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    SHEET TRANSITIONING IN SPIRAL FORMED STRUCTURES

    • Publication number 20180056354
    • Publication date Mar 1, 2018
    • Keystone Tower Systems, Inc.
    • Rosalind K. Takata
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    METHOD OF PRODUCING SHAPED ARTICLE, TOOLING, AND TUBULAR SHAPED ART...

    • Publication number 20170274434
    • Publication date Sep 28, 2017
    • NIPPON STEEL & SUMITOMO METAL CORPORATION
    • Masahiko SATO
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    TAPERED SPIRAL WELDED STRUCTURE

    • Publication number 20140220371
    • Publication date Aug 7, 2014
    • Keystone Tower Systems, Inc.
    • Eric D. Smith
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    TOWER PRODUCTION METHOD

    • Publication number 20140047696
    • Publication date Feb 20, 2014
    • Cevdet Unan
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    METHOD FOR MANUFACTURING REFRIGERANT GUIDE TUBE OF HEAT EXCHANGER,...

    • Publication number 20130248158
    • Publication date Sep 26, 2013
    • Qiang Gao
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    TAPERED STRUCTURE CONSTRUCTION

    • Publication number 20130074564
    • Publication date Mar 28, 2013
    • Eric Smith
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    TOWER PRODUCTION METHOD

    • Publication number 20120273556
    • Publication date Nov 1, 2012
    • Cevdet Unan
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    ENERGY ABSORBER FOR A BUMPER ASSEMBLY OF A VEHICLE AND METHOD FOR T...

    • Publication number 20110198873
    • Publication date Aug 18, 2011
    • AUTOTECH ENGINEERING A.I.E.
    • Francesc PERARNAU RAMOS
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Tapered Spiral Welded Structure

    • Publication number 20110179623
    • Publication date Jul 28, 2011
    • Eric Smith
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Process and apparatus for producing a hollow body, and hollow body

    • Publication number 20100294014
    • Publication date Nov 25, 2010
    • ThyssenKrupp Steel Europe AG
    • Thomas Flehmig
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    SPIRALLY WELDED CONICAL TOWER SECTIONS

    • Publication number 20100095508
    • Publication date Apr 22, 2010
    • LINCOLN GLOBAL, INC.
    • Patrick Wahlen
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    Process of producing profiles whose cross-section is variable in th...

    • Publication number 20080028819
    • Publication date Feb 7, 2008
    • Andreas Hauger
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    Method for forming a complex-shaped tubular structure

    • Publication number 20070193013
    • Publication date Aug 23, 2007
    • Spyros P. Mellas
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    Method for producing from a metal sheet a hollow profile which is l...

    • Publication number 20070175261
    • Publication date Aug 2, 2007
    • Lothar Hornig
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    Continuous process of roll-forming pre-stamped varying shapes

    • Publication number 20070095001
    • Publication date May 3, 2007
    • Shape Corporation
    • David W. Heatherington
    • B60 - VEHICLES IN GENERAL