Inventor · disambiguated record
Larry D. Markham
Also filed as: MARKHAM LARRY D · MARKHAM LARRY DERWOOD
17 granted patents·443 citations·filing 1979–2004
95Inventor score
Top patents by PatentIndex Score
17 records- 0193US4363697AMethod for medium consistency oxygen delignification of pulpBLACK CLAWSON CO·Filed 1979·Granted Dec 14, 1982·42 cites·13 claims
- 0289US4435249AProcess for the oxygen delignification of pulp mill rejectsBLACK CLAWSON CO·Filed 1981·Granted Mar 6, 1984·39 cites·9 claims
- 0388US5580446AScreen, vortex apparatus for cleaning recycled pulp and related processINT PAPER CO·Filed 1994·Granted Dec 3, 1996·40 cites·10 claims
- 0488US4384920AMethod and apparatus for oxygen delignificationBLACK CLAWSON CO·Filed 1982·Granted May 24, 1983·33 cites·14 claims
- 0586US4431480AMethod and apparatus for controlled addition of alkaline chemicals to an oxygen delignification reactionBLACK CLAWSON CO·Filed 1981·Granted Feb 14, 1984·28 cites·11 claims
- 0686US4399028AFroth flotation apparatus and methodBLACK CLAWSON CO·Filed 1982·Granted Aug 16, 1983·59 cites·19 claims
- 0782US4722793AApparatus and method for thickening pulp and paper stockBLACK CLAWSON CO·Filed 1987·Granted Feb 2, 1988·29 cites·20 claims
- 0873US5453159ADeinking of recycled pulpINT PAPER CO·Filed 1993·Granted Sep 26, 1995·20 cites·24 claims
- 0972US5707488AScreen/vortex apparatus for cleaning recycled pulp related processINT PAPER CO·Filed 1996·Granted Jan 13, 1998·19 cites·10 claims
- 1062US4663030ADisk rotor for selectifier screenBLACK CLAWSON CO·Filed 1986·Granted May 5, 1987·26 cites·2 claims
- 1160US5865947AMethod for recycling mixed wastepaper including plastic-containing paper and ink printed paperINT PAPER CO·Filed 1995·Granted Feb 2, 1999·22 cites·11 claims
- 1258US5340439AMethod for removing ink from printed paper using agglomerating agent, followed by addition of talcINT PAPER CO·Filed 1992·Granted Aug 23, 1994·20 cites·10 claims
- 1357US5733412ADecolorizing brown fibers in recycled pulpINT PAPER CO·Filed 1995·Granted Mar 31, 1998·18 cites·27 claims
- 1456US5234543ADeinking method using ink agglomerationINT PAPER CO·Filed 1991·Granted Aug 10, 1993·20 cites·24 claims
- 1553US5512133AMethod for deinking recycled paper using a low flow elongated open top flotation vesselINT PAPER CO·Filed 1994·Granted Apr 30, 1996·15 cites·10 claims
- 1652US7534322B2Method of deinking recycled paper employing centrifigal cleanersINT PAPER CO·Filed 2004·Granted May 19, 2009·1 cites·10 claims
- 1747US5766448APressure screening system for processing contaminated pulp fiberINT PAPER CO·Filed 1996·Granted Jun 16, 1998·12 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →