Inventor
PENNINGTON KEITH S
26 patents
Patents
26 patentsUS4668995AMay 26, 1987
System for reproducing mixed images
IBM153 citations97
US4885786ADec 5, 1989
Method for enlarging an image stored in run representation form
IBM80 citations96
US4264921AApr 28, 1981
Apparatus for color or panchromatic imaging
IBM57 citations96
US4019188AApr 19, 1977
Micromist jet printer
IBM143 citations95
US5293434AMar 8, 1994
Technique for use in a transform coder for imparting robustness to compressed image data through use of global block transformations
IBM71 citations94
US3959798AMay 25, 1976
Selective wetting using a micromist of particles
IBM49 citations92
US4617579AOct 14, 1986
Hydrophilic protective coatings for electroerosion printing
IBM23 citations82
US4915519AApr 10, 1990
Direct negative from resistive ribbon
IBM21 citations81
US4268368AMay 19, 1981
Electrophoretical method for selectively reinking resistive ribbon thermal transfer printing ribbons
IBM20 citations81
US4253775AMar 3, 1981
Apparatus for re-inking a ribbon in a thermal transfer printing system
IBM19 citations81
US4894279AJan 16, 1990
Electroerosion print media having protective coatings modified with organotitanium reagents
IBM13 citations74
US4678701AJul 7, 1987
Resistive printing ribbon having improved properties
IBM10 citations74
US4596733AJun 24, 1986
Electroerosion recording material with polyorganosiloxane overlayer
IBM17 citations74
US4567490AJan 28, 1986
Electroerosion recording medium of improved lubricity
IBM11 citations74
US4554562ANov 19, 1985
Scratch resistant recording materials for electroerosion printing not requiring a lubricant overcoat
IBM15 citations74
US4830909AMay 16, 1989
Scratch resistant recording materials for electroerosion printing comprising cross-linked polymer base layer
IBM9 citations73
US4532651AJul 30, 1985
Data filter and compression apparatus and method
IBM16 citations71
US4800397AJan 24, 1989
Metal transfer to form printing master plate or printed circuit board
IBM16 citations70
US4550061AOct 29, 1985
Electroerosion printing media using depolymerizable polymer coatings
IBM17 citations70
US5084331AJan 28, 1992
Electroerosion recording medium of improved corrosion resistance
IBM3 citations63
US4836106AJun 6, 1989
Direct offset master by resistive thermal printing
IBM6 citations63
US4568977AFeb 4, 1986
On-chip CCD realization of the Laplacian operator for image signal processing
IBM6 citations62
US4596479AJun 24, 1986
Dot matrix printer
IBM2 citations61
US4836105AJun 6, 1989
Direct negative and offset master production using thermal liftoff
IBM5 citations57
US4810119AMar 7, 1989
Resistive ribbon for high resolution printing
IBM5 citations57
US5176947AJan 5, 1993
Electroerosion printing plates
IBM5 citations56