Assignee
MATERIAL CONTROL INC
US·23 granted patents·571 citations·filing 1974–2013
Top patents by PatentIndex Score
23 records- 0196US7757813B2Dual track ladder with brake mechanism that is automatically applied to the upper tracks to hold the ladder in place during useMATERIAL CONTROL INC·Filed 2008·Granted Jul 20, 2010·29 cites·6 claims
- 0293US4533035AConveyor belt cleanerMATERIAL CONTROL INC·Filed 1984·Granted Aug 6, 1985·52 cites·15 claims
- 0388US4036351AConveyor belt cleanerMATERIAL CONTROL INC·Filed 1976·Granted Jul 19, 1977·37 cites·8 claims
- 0488US3994388AConveyor belt cleanerMATERIAL CONTROL INC·Filed 1975·Granted Nov 30, 1976·38 cites·13 claims
- 0587US4053045AResiliently mounted conveyor belt cleanerMATERIAL CONTROL INC·Filed 1977·Granted Oct 11, 1977·38 cites·5 claims
- 0686US4416020ASize sensing X-ray cassette tray for X-ray equipmentMATERIAL CONTROL INC·Filed 1981·Granted Nov 15, 1983·35 cites·22 claims
- 0785US6964331B1Cantilever mounted rotary brush conveyor belt cleanerMATERIAL CONTROL INC·Filed 2004·Granted Nov 15, 2005·29 cites·19 claims
- 0884US4036354AConveyor belt cleanerMATERIAL CONTROL INC·Filed 1975·Granted Jul 19, 1977·31 cites·14 claims
- 0983US6619427B1Foldable dual track ladderMATERIAL CONTROL INC·Filed 2002·Granted Sep 16, 2003·30 cites·23 claims
- 1083US3994384AConveyor belt cleanerMATERIAL CONTROL INC·Filed 1975·Granted Nov 30, 1976·31 cites·9 claims
- 1180US4462523ADamaged conveyor belt detectorMATERIAL CONTROL INC·Filed 1982·Granted Jul 31, 1984·28 cites·15 claims
- 1272US3956606ACable operated safety stop switchMATERIAL CONTROL INC·Filed 1974·Granted May 11, 1976·16 cites·21 claims
- 1368US4535883AShock mount telescoping conveyor belt cleanerMATERIAL CONTROL INC·Filed 1984·Granted Aug 20, 1985·18 cites·14 claims
- 1464US4533037ATelescoping conveyor belt cleanerMATERIAL CONTROL INC·Filed 1984·Granted Aug 6, 1985·16 cites·21 claims
- 1562US6305496B1Safety mobile ladder standMATERIAL CONTROL INC·Filed 2000·Granted Oct 23, 2001·23 cites·11 claims
- 1661US9206643B2Leveling leg for a ladderMATERIAL CONTROL INC·Filed 2013·Granted Dec 8, 2015·3 cites·14 claims
- 1761US3994385AConveyor belt cleanerMATERIAL CONTROL INC·Filed 1975·Granted Nov 30, 1976·14 cites·14 claims
- 1857US4211966ALevel control sensor switch mechanismMATERIAL CONTROL INC·Filed 1978·Granted Jul 8, 1980·14 cites·19 claims
- 1954US5080192ALadder with warning gateMATERIAL CONTROL INC·Filed 1990·Granted Jan 14, 1992·21 cites·17 claims
- 2050US5413191ADual track ladderMATERIAL CONTROL INC·Filed 1994·Granted May 9, 1995·19 cites·5 claims
- 2150US5082086AWheeled ladderMATERIAL CONTROL INC·Filed 1990·Granted Jan 21, 1992·19 cites·3 claims
- 2248US5653307ADual track mounted pivoting ladder assemblyMATERIAL CONTROL INC·Filed 1995·Granted Aug 5, 1997·19 cites·10 claims
- 2338US5305369ABucky drive systemMATERIAL CONTROL INC·Filed 1993·Granted Apr 19, 1994·11 cites·4 claims
Join the waitlist — get patent alerts
Get an alert when MATERIAL CONTROL INC files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →