Inventor
PRITCHARD THOMAS B
US15 patents
⚠️ This page may combine multiple inventors who share the name “PRITCHARD THOMAS B”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HEWLETT PACKARD CO
9 patentsUS5012257AApr 30, 1991
Ink jet color graphics printing
HEWLETT PACKARD CO76 citations96
US6057933AMay 2, 2000
Table based fast error diffusion halftoning technique
HEWLETT PACKARD CO53 citations95
US6267463B1Jul 31, 2001
Method and apparatus for transferring data between a printer and a replaceable printing component
HEWLETT PACKARD CO62 citations93
US5706414AJan 6, 1998
Dot depletion in pixel-array printing
HEWLETT PACKARD CO42 citations92
US5596423AJan 21, 1997
Method and apparatus for compression and decompression of data used by a serial printer
HEWLETT PACKARD CO20 citations92
US5123061AJun 16, 1992
Data compression/decompression method, device and resulting data structure
HEWLETT PACKARD CO25 citations92
US4958255ASep 18, 1990
Electrostatic discharge and electromagnetic interference protection circuit
HEWLETT PACKARD CO24 citations92
US5732151AMar 24, 1998
Computerized memory mapping method for transforming color data
HEWLETT PACKARD CO17 citations80
US5369645ANov 29, 1994
Testing integrated circuit pad input and output structures
HEWLETT PACKARD CO17 citations69
HEWLETT PACKARD DEVELOPMENT CO
6 patentsUS6804417B1Oct 12, 2004
Pixel depletion technique
HEWLETT PACKARD DEVELOPMENT CO94 citations97
US6650793B1Nov 18, 2003
Multiple data manipulation algorithms for text quality enhancement
HEWLETT PACKARD DEVELOPMENT CO93 citations97
US6853468B2Feb 8, 2005
Reducing quantization errors in imaging systems
HEWLETT PACKARD DEVELOPMENT CO13 citations84
US6760122B1Jul 6, 2004
Reducing quantization errors in imaging systems
HEWLETT PACKARD DEVELOPMENT CO6 citations73
US7230657B2Jun 12, 2007
Light emitting device projection methods and systems
HEWLETT PACKARD DEVELOPMENT CO6 citations63
US7355747B2Apr 8, 2008
System for improving the speed of data processing
HEWLETT PACKARD DEVELOPMENT CO4 citations62