Assignee
A LOK PROD
US·23 granted patents·1 pending application·862 citations·filing 1977–2023
Top patents by PatentIndex Score
24 records- 0194US4387900AMethod and apparatus for providing watertight seal for manhole pipe connectionA LOK PROD·Filed 1982·Granted Jun 14, 1983·91 cites·25 claims
- 0288US4508355AGasket suitable for use in sealing exterior of sewer pipe to opening in manhole, and method and system employing sameA LOK PROD·Filed 1983·Granted Apr 2, 1985·67 cites·1 claims
- 0388US4159829AGasket seal between sewer pipe and manhole openingA LOK PROD·Filed 1977·Granted Jul 3, 1979·57 cites·4 claims
- 0487US5114162AGasket for use in manhole bases and the likeA LOK PROD·Filed 1986·Granted May 19, 1992·49 cites·11 claims
- 0587US4751799AMethod and apparatus for lining manhole assemblies and the likeA LOK PROD·Filed 1986·Granted Jun 21, 1988·59 cites·11 claims
- 0687US4621941AManhole riser having integral flexible waterlock for manhole covers and having a water tight seal for sealed manhole coversA LOK PROD·Filed 1985·Granted Nov 11, 1986·56 cites·30 claims
- 0783US4540310AManhole riser and cooperating sleeve to provide a waterlock for manhole structuresA LOK PROD·Filed 1983·Granted Sep 10, 1985·41 cites·15 claims
- 0882US4890863AMetallic adjustable clamping band for gasketsA LOK PROD·Filed 1988·Granted Jan 2, 1990·51 cites·13 claims
- 0982US4737220AMethod of making a manhole riser having integral flexible waterlock for manhole covers and having a water tight seal for sealed manhole coversA LOK PROD·Filed 1986·Granted Apr 12, 1988·43 cites·11 claims
- 1082US4422994AMethod and apparatus for forming inverts in manhole assemblies, and the likeA LOK PROD·Filed 1981·Granted Dec 27, 1983·35 cites·15 claims
- 1180US4941643AApparatus for forming inverts and manhole assemblies and the like utilizing adjustable invert forming members joined with an intermediate flexible portionA LOK PROD·Filed 1989·Granted Jul 17, 1990·36 cites·13 claims
- 1279US4746127AAdjustable clamping band for gaskets and method for using sameA LOK PROD·Filed 1987·Granted May 24, 1988·44 cites·24 claims
- 1377US4565347AMonolithic precast invert systemA LOK PROD·Filed 1983·Granted Jan 21, 1986·36 cites·11 claims
- 1475US4903970AApparatus for providing a watertight seal for manhole pipe connections including a foldable gasket and clamping band assembly and expansion means for installing the gasket and clamping band assemblyA LOK PROD·Filed 1987·Granted Feb 27, 1990·31 cites·8 claims
- 1573US4711455AGasket for use in manholes and including clamping band having cooperating projections and grooves for preventing relative axial movement of the opposing ends of the clamping band during installation and for facilitating expansion by an expansion jackA LOK PROD·Filed 1985·Granted Dec 8, 1987·28 cites·9 claims
- 1670US5054794AClamping band for gaskets and the like and expansion means thereforA LOK PROD·Filed 1989·Granted Oct 8, 1991·26 cites·20 claims
- 1768US4566483ADrop manhole precast encasementA LOK PROD·Filed 1984·Granted Jan 28, 1986·26 cites·14 claims
- 1867US4801417AMethods for forming inverts in manhold assembliesA LOK PROD·Filed 1987·Granted Jan 31, 1989·23 cites·16 claims
- 1966US4685650AApparatus for forming inverts and manhole assembliesA LOK PROD·Filed 1985·Granted Aug 11, 1987·22 cites·50 claims
- 2065US4618464APrecast concrete manhole adjustable bolt slot for securing cast iron frame and cover and method for casting sameA LOK PROD·Filed 1984·Granted Oct 21, 1986·23 cites·13 claims
- 2164US7624992B2Gasket packageA LOK PROD·Filed 2006·Granted Dec 1, 2009·3 cites·12 claims
- 2261US2025164055A1Multi-dimensional spacerA LOK PROD·Filed 2023·Application pending·0 cites
- 2351US7918464B2Gasket packageA LOK PROD·Filed 2007·Granted Apr 5, 2011·0 cites·17 claims
- 2448US4719724APrecast concrete manhole adjustable bolt slot assembly for securing cast iron frame and coverA LOK PROD·Filed 1986·Granted Jan 19, 1988·15 cites·11 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →