Inventor

MARKHAM LARRY D

US16 patents

⚠️ This page may combine multiple inventors who share the name “MARKHAM LARRY D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

INT PAPER CO

9 patents

US5707488AJan 13, 1998

Method for recycling mixed wastepaper including plastic-containing paper and ink printed paper

INT PAPER CO22 citations91

US5340439AAug 23, 1994

Method for removing ink from printed paper using agglomerating agent, followed by addition of talc

INT PAPER CO20 citations91

US5733412AMar 31, 1998

Decolorizing brown fibers in recycled pulp

INT PAPER CO18 citations81

US5234543AAug 10, 1993

Deinking method using ink agglomeration

INT PAPER CO20 citations78

US5766448AJun 16, 1998

Pressure screening system for processing contaminated pulp fiber

INT PAPER CO12 citations73

US5512133AApr 30, 1996

Method for deinking recycled paper using a low flow elongated open top flotation vessel

INT PAPER CO15 citations73

BLACK CLAWSON CO

7 patents

US4431480AFeb 14, 1984

Method and apparatus for controlled addition of alkaline chemicals to an oxygen delignification reaction

BLACK CLAWSON CO28 citations92

US4722793AFeb 2, 1988

Apparatus and method for thickening pulp and paper stock

BLACK CLAWSON CO29 citations91

US4435249AMar 6, 1984

Process for the oxygen delignification of pulp mill rejects

BLACK CLAWSON CO39 citations91

US4399028AAug 16, 1983

Froth flotation apparatus and method

BLACK CLAWSON CO59 citations91

US4384920AMay 24, 1983

Method and apparatus for oxygen delignification

BLACK CLAWSON CO33 citations91

US4663030AMay 5, 1987

Disk rotor for selectifier screen

BLACK CLAWSON CO26 citations89

US4363697ADec 14, 1982

Method for medium consistency oxygen delignification of pulp

BLACK CLAWSON CO42 citations89