Assignee
LANGSTON CORP
US·14 granted patents·280 citations·filing 1990–1998
Top patents by PatentIndex Score
14 records- 0190US5493104AMethod and apparatus for automatically separating boxes in a counter ejector into stacksLANGSTON CORP·Filed 1993·Granted Feb 20, 1996·41 cites·11 claims
- 0284US6012391AInk/cleaning fluid delivery system for a chambered doctor bladeLANGSTON CORP·Filed 1998·Granted Jan 11, 2000·26 cites·11 claims
- 0384US5243907ADivider seal for split-fountain chambered doctor blade for a flexographic printing pressLANGSTON CORP·Filed 1992·Granted Sep 14, 1993·23 cites·23 claims
- 0477US5713256ADual speed limits for a cut-offLANGSTON CORP·Filed 1994·Granted Feb 3, 1998·41 cites·4 claims
- 0575US5827162AFolder/gluer machine for paperboard blanksLANGSTON CORP·Filed 1997·Granted Oct 27, 1998·55 cites·13 claims
- 0672US5226363ADual pressure preload system for maintaining a memberLANGSTON CORP·Filed 1990·Granted Jul 13, 1993·18 cites·26 claims
- 0763US5427136AFluid level detection systemLANGSTON CORP·Filed 1991·Granted Jun 27, 1995·29 cites·23 claims
- 0860US5772787AMethod of cleaning and maintaining viscosity and pH devices for water based Flexo inksLANGSTON CORP·Filed 1995·Granted Jun 30, 1998·11 cites·14 claims
- 0952US5165342AEvacuation system for inking chamberLANGSTON CORP·Filed 1991·Granted Nov 24, 1992·9 cites·5 claims
- 1037US5626709ASingle facer corrugating roll flute contourLANGSTON CORP·Filed 1994·Granted May 6, 1997·7 cites·11 claims
- 1135US5002524APrecrush tool for corrugated board slotter headLANGSTON CORP·Filed 1990·Granted Mar 26, 1991·12 cites·9 claims
- 1233USRE35471ESeal for fountain chambered doctor blade for a flexographic printing pressLANGSTON CORP·Filed 1995·Granted Mar 11, 1997·2 cites·24 claims
- 1333US5110396AFloating air seal for an apparatus for manufacturing single faced corrugated boardLANGSTON CORP·Filed 1990·Granted May 5, 1992·6 cites·9 claims
- 1430US5257299AMethod and system for counting irregularly shaped moving articlesLANGSTON CORP·Filed 1992·Granted Oct 26, 1993·0 cites·32 claims
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