The first patent for the Link-Pipe spot repair sleeve was registered in the United States by Lembit Maimets in 1978; sales began in 1980. This event established Link-Pipe as the supplier of the first commercially-available spot repair technology in the world, and consequently set our company on a path to becoming a world leader in no-dig sewer repair.

Subsequent patents have been obtained for SNAP-LOCK™ repair sleeves (applied in October 31, 1988), GROUTING SLEEVE™ and Gas Sealer™.

By the end of 2009, 53 patents were issued to or applied for by Maimets and licensed to Link-Pipe Inc. or its affiliated companies.

Our company is renowned for its no-dig pipe repair services, and is a registered trademark of Link-Pipe Inc. in Canada and the United States.

Dia-Meter™, Gas Sealer™, Hydro-Seal™, Grouting Sleeve™, Link-Pipe PVC™, Pressure-Seal™, Sewer Sealer™ and Sewer Sealer VD™ are trademarks of Link-Pipe Inc. Grouting Sleeve™ is protected by US Patent No. 5,351,720, Canadian Patent No. 2,131,291. Gas Sealer™ is protected by US Patent No. 6,138,718.

LinkPipe - Stainless Steel Expandable Grouting Sleeve - Installation Tips - Brochure