John R. Crigler — 12 Patents at Structural Technologies

John R. Crigler has been granted 12 US patents while listed as an inventor at Structural Technologies. The first was granted in 1990 and the most recent in May 2025. John R. Crigler ranks #396,045 of 4,157,543 US inventors in our database (top 9.5%). Patent records list John R. Crigler in Woodbine, MD, US.

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12305343	In-line damping systems and methods	Robert William Sward, Eric Sommer, Justin Malcolm Campbell, Christopher Daryl Ledford, Simon Ruas	2025-05-20
11473302	Segmental duct coupler devices, systems, and methods	Gregory A. Hunsicker, Zuming Xia	2022-10-18
9982434	Encapsulated anchor devices, systems, and methods	Gregory A. Hunsicker	2018-05-29
9879804	Duct coupler devices, systems, and related methods	Gus Dean Hammonds, Robert William Sward, Gregory A. Hunsicker	2018-01-30
8678043	Method for repairing and strengthening pipe with internal helically wound tensile reinforcement	Peter H. Emmons, Michael R. Moussa, Dan A. Dock, Scott V. Bauer, Nathan D. Sauer	2014-03-25
8596917	System for repairing and strengthening pipe with internal helically wound tensile reinforcement	Peter H. Emmons, Michael R. Moussa, Dan A. Dock, Scott V. Bauer, Nathan D. Sauer	2013-12-03
6610399	Multi-layer, thermal protection and corrosion protection coating system for metallic tendons, especially for external post-tensioning systems	—	2003-08-26
6209274	Vent flow apparatus and method	—	2001-04-03
5971669	Mechnically stabilized retaining wall system having adjustable connection means for connecting precast concrete facing panels thereto	—	1999-10-26	$638,000
5939003	Post-tensioning apparatus and method	Robert Duncan Lapsley, Donald Paul Kline, Daniel Wallace Falconer	1999-08-17
5596854	Post-tensioning anchor head assembly	—	1997-01-28
4918887	Protective tendon tensioning anchor assemblies	Edgar A. Davis, Richard L. Watts	1990-04-24

John R. Crigler — 12 Patents

Issued Patents All Time

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