ENGINEERING LIBRARY
QuakeWrap® Patents
The U.S. patents behind PileMedic® jackets and spacers, SPiRe® panels, ShearWrap™ and ShearClamp™, InfinitPipe® and reusable FRP column forms. Each one names Prof. Mo Ehsani, the founder of QuakeWrap®, as inventor. Each entry links to the full patent on Google Patents.
- 11 issued U.S. patents
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- Full text on Google Patents
Issued U.S. Patents
Showing 11 patents
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Reusable and Adjustable-Size Form for Repair and Reinforcement of Structures
U.S. Patent 11,591,810. Issued Feb. 28, 2023. Mohammad R. Ehsani
A laminate called MoTubes (FRP Laminate Form on the Custom FRP Shapes page) that wraps around itself to form a tube of any shape and size for casting new columns or jacketing existing ones. After the concrete sets, the laminate comes off and can be reused. Rolls up to 10 ft (3 m) wide.
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Shear Transfer Ring and Clamp
U.S. Patent 11,286,632. Issued Mar. 29, 2022. Mohammad R. Ehsani and Saeed Towfighi
ShearWrap™ is a steel band torqued around a steel pile to transfer load by friction between the pile and the new concrete jacket, without underwater welding of shear studs. ShearClamp™ does the same for steel H-piles.
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Structure Reinforcement Partial Shell
U.S. Patent 10,968,631. Issued Apr. 6, 2021. Mohammad R. Ehsani
A premanufactured FRP panel fixed at a set distance from a structure that cannot be wrapped 360 degrees, such as a seawall, beam or deck. The gap is filled with grout or epoxy and the panel stays in place. This patent is the basis of the SPiRe® sheet pile repair system.
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Spacers for Repair of Columns and Piles
U.S. Patent 10,808,412. Issued Oct. 20, 2020. Mohammad Reza Ehsani
Spacers of various shapes that mount on the pile or column, hold reinforcing bars at set locations and cover, and set the exact annular space inside a PileMedic® jacket. A single diver can attach the spacers and snap the bars in place.
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Method and Apparatus for Mining Copper
U.S. Patent 10,571,052. Issued Feb. 25, 2020. Mohammad R. Ehsani
Listed among the InfinitPipe® patents on the InfinitPipe® site and in the InfinitPipe® brochure, which groups its patents by InfinitPipe® application. Google Patents describes lining in-situ leach mining wells with pipe made on site by wrapping resin-saturated fabric strips around mandrels.
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Trenchless Pipe-Laying
U.S. Patent 10,436,350. Issued Oct. 8, 2019. Mohammad R. Ehsani
Listed among the InfinitPipe® patents on the InfinitPipe® site and in the InfinitPipe® brochure. InfinitPipe® is FRP pipe made on site in a continuous process.
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Reinforcement and Repair of Structural Columns
U.S. Patent 9,890,546. Issued Feb. 13, 2018. Mohammad Reza Ehsani
Reinforcing bars inside a PileMedic® jacket are anchored into the slab, floor or beams above and below, so the repaired column or pile has a moment-resisting connection. QuakeWrap's cell phone tower repair, with bars anchored into the foundation, is based on this patent.
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Buckling Reinforcement for Structural Members
U.S. Patent 9,719,255. Issued Aug. 1, 2017. Mohammad Reza Ehsani
Converts an ordinary brace into a buckling-restrained brace. The brace gets a bond-inhibiting coat, PileMedic® laminates are wrapped around it at a distance, and the gap is filled with concrete or grout. Intended mainly for seismic retrofit.
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Repair and Strengthening of Piles and Pipes with FRP Laminates
U.S. Patent 9,376,782. Issued June 28, 2016. Mohammad R. Ehsani
The PileMedic® jacket: semi-rigid laminates wrapped around a pile or column in one or more layers and bonded to themselves, leaving an annular space filled with grout or resin, with optional reinforcing bars.
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Reconstruction Methods for Structural Elements
U.S. Patent 8,650,831. Issued Feb. 18, 2014. Mohammad R. Ehsani
A flexible sheet is placed around a deteriorated pile or column with a gap, resin-saturated FRP fabric is wrapped over it to form a seamless shell, and the gap is filled with grout or resin so the shell and pile work together.
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Method of Strengthening Masonry and Concrete Walls with Composite Strap and High Strength Random Fibers
U.S. Patent 5,640,825. Issued June 24, 1997. Mohammad R. Ehsani and Hamid Saadatmanesh
Listed in QuakeWrap's company history as its 1997 patent. Covers strengthening masonry and concrete walls by epoxy-bonding fiber composite straps to the wall. Google Patents lists it as expired at the end of its term.
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TO CONFIRM
More U.S. Patents Naming Prof. Ehsani
[Confirm with QuakeWrap: Google Patents lists these six granted U.S. patents with Mohammad R. Ehsani as inventor, but no QuakeWrap page lists them. Like the patents above (for example 9,376,782, issued to Prof. Ehsani as inventor with no company assignee), they name no company, so the assignee does not decide it. Confirm which QuakeWrap® product each one covers, or remove this section.]
REQUEST SPECIFICATIONS & DESIGN DETAILS- U.S. PATENT 11,746,546, SEPT. 5, 2023 External Onsite-Manufactured Continuous Structural Sleeve A seamless continuous sleeve wrapped on mandrels placed around a structure's existing supports. Active.
- U.S. PATENT 11,000,987, MAY 11, 2021 Reinforcement of Structures Using 3D-Fabric Wrap Layered 3D-fabric wraps for pipes, ducts, tanks, silos, chimneys and columns. Active.
- U.S. PATENT 9,435,123, SEPT. 6, 2016 Repair and Strengthening of Structures with Electrically-Cured Resin-Impregnated Wrap Resin-impregnated fabric wrap for pipes, piles, walls and tanks, cured electrically. Active.
- U.S. PATENT 9,422,733, AUG. 23, 2016 Repair and Strengthening of Structures with Resin-Impregnated Heatable Wrap Resin-impregnated heatable fabric wrap for pipes, piles, walls and tanks. Active.
- U.S. PATENT 9,422,718, AUG. 23, 2016 Repair and Strengthening of Structures with Heat-Cured Wrap Heat-cured resin-impregnated fabric wrap for pipes, piles, walls and tanks. Active.
- U.S. PATENT 7,793,478, SEPT. 14, 2010 Fiber Reinforced Polymer Roof Strengthening Method Strengthening a roof deck with resin-saturated composite strips. Expired (fee related).
Patent FAQs
Which patents cover PileMedic®?
U.S. Patent 9,376,782 covers the PileMedic® laminate jacket. 9,890,546 adds anchored reinforcing bars for a moment-resisting connection, 9,719,255 uses PileMedic® laminates to make buckling-restrained braces, 10,808,412 covers the spacers, and 8,650,831 covers the seamless FRP shell around a pile.
Which patent covers SPiRe®?
U.S. Patent 10,968,631, Structure Reinforcement Partial Shell, issued April 6, 2021. The newer SPiRe®+ panel is described as patent pending.
Are more QuakeWrap® patents pending?
Yes. QuakeWrap® notes several provisional and pending applications in prosecution. One example is U.S. Patent Application 63/198,614, Pumped Hydro Storage and Real-Time Stress Monitoring in Penstocks, filed October 29, 2020.
Where can I read the full patent?
Each patent above links to its page on Google Patents, with the full text, claims and drawings.
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