P

Inventor

RADEMACHER TIMOTHY JOHN

US31 patents
⚠️ This page may combine multiple inventors who share the name “RADEMACHER TIMOTHY JOHN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LEXMARK INT INC

30 patents
US6804727B1Oct 12, 2004

Method for communication from a host computer to a peripheral device

LEXMARK INT INC92 citations98
US5930466AJul 27, 1999

Method and apparatus for data compression of bitmaps using rows and columns of bit-mapped printer data divided into vertical slices

LEXMARK INT INC136 citations98
US6801959B1Oct 5, 2004

Relaxed-timing universal serial bus with a start of frame packet generator

LEXMARK INT INC21 citations92
US6643728B1Nov 4, 2003

Method and apparatus for converting IEEE 1284 signals to or from IEEE 1394 signals

LEXMARK INT INC34 citations92
US6097499AAug 1, 2000

Methods and apparatus for isochronous printing with minimal buffering

LEXMARK INT INC76 citations92
US7262873B1Aug 28, 2007

Photoprinter access to remote data

LEXMARK INT INC25 citations89
US10416602B1Sep 17, 2019

System and methods for detecting non-authentic slave components using clock frequency changes

LEXMARK INT INC5 citations84
US6124696ASep 26, 2000

Programmable stepper motor controller and method therefor

LEXMARK INT INC16 citations84
US7139344B2Nov 21, 2006

Method and apparatus for effecting synchronous pulse generation for use in variable speed serial communications

LEXMARK INT INC15 citations83
US10962914B1Mar 30, 2021

System and methods for detecting non-authentic slave components using clock frequency changes

LEXMARK INT INC1 citations73
US9535852B2Jan 3, 2017

System and method for secured host-slave communication

LEXMARK INT INC3 citations73
US7103125B1Sep 5, 2006

Method and apparatus for effecting synchronous pulse generation for use in serial communications

LEXMARK INT INC8 citations73
US5971518AOct 26, 1999

Method of printing with an ink jet printer to inhibit the formation of a print artifact

LEXMARK INT INC11 citations73
US10880454B2Dec 29, 2020

Chip and supply item for imaging device, including communication

LEXMARK INT INC3 citations72
US10375273B1Aug 6, 2019

Chip and supply item for imaging device, including communication

LEXMARK INT INC2 citations72
US10419641B1Sep 17, 2019

Chip and supply item for imaging device, including communication

LEXMARK INT INC6 citations71
US12572949B2Mar 10, 2026

Methods and systems for determining the authenticity of a component using elliptic-curve cryptography

LEXMARK INT INC0 citations62
US12086814B2Sep 10, 2024

Methods and systems for determining the authenticity of a component using elliptic-curve cryptography

LEXMARK INT INC0 citations62
US12003686B2Jun 4, 2024

Method of setting up electrical communications between an imaging device and a supply item

LEXMARK INT INC0 citations62
US11347172B2May 31, 2022

System and methods for detecting non-authentic slave components using clock frequency changes

LEXMARK INT INC0 citations62
US7409023B2Aug 5, 2008

Method and apparatus for effecting synchronous pulse generation for use in serial communications

LEXMARK INT INC3 citations62
US12236436B2Feb 25, 2025

Methods and systems for determining the authenticity of a component

LEXMARK INT INC0 citations61
US12073206B2Aug 27, 2024

Methods for updating an electronic device

LEXMARK INT INC0 citations61
US11989737B2May 21, 2024

Methods and systems for determining the authenticity of a component

LEXMARK INT INC0 citations61
US12210610B2Jan 28, 2025

Authentication using magnetic field based on current drawn by security device

LEXMARK INT INC0 citations60
US7957598B2Jun 7, 2011

Methods and systems for dynamic scan compression

LEXMARK INT INC2 citations56
US12206785B2Jan 21, 2025

Security device computation matching

LEXMARK INT INC0 citations51
US10542172B2Jan 21, 2020

Chip and supply item for imaging device, including communication

LEXMARK INT INC0 citations51
US12386942B2Aug 12, 2025

Authentication using analog signal challenge

LEXMARK INT INC0 citations50
US12450398B2Oct 21, 2025

Methods and systems for determining the authenticity of a component

LEXMARK INT INC0 citations45

ADKINS CHRISTOPHER ALAN

1 patent