Inventor

Earl Dawson Ward, II

Inventor

Richmond, KY, US

Overview

1983–2008

Patent span

Physics

Primary field (CPC G)

Patents· 29 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G03Gprimary

G03GElectrography51%

B41JTypewriters16%

H04NPictorial communication, e.g. television16%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds4%

G02BOptical elements, systems or apparatus4%

G06KGraphical data reading4%

G01RMeasuring electric variables2%

LOC162%

PatentTitleYear

7,321,379'Galvonometric scanning and imaging with multiple beams reflected from an oscillator'2008 6,989,852'Method of margin alignment and plane-to-plane registration in a tandem color electrophotographic machine'2006 6,989,853'Method of margin alignment and plane-to-plane registration in a tandem color electrophotographic machine'2006 6,956,597'Scanning with multiple oscillating scanners'2005 6,774,923'Dual polygon laser printhead for a color printer'2004 6,650,352'Electronic control arrangement for a laser printer'2003 6,549,225'Method of margin alignment and plane-to-plane registration in a tandem color electrophotographic machine'2003 6,486,906'Apparatus and method for printhead to machine skew and margin adjustment for an electrophotographic machine'2002 6,480,221'Method and apparatus for determining a process position of a scan line in an electrophotographic machine'2002 6,397,015'Encoded device having positioned indicia for use with a toner cartridge'2002 6,362,847'Electronic control arrangement for a laser printer'2002 6,295,422'Encoded wheel for a toner cartridge'2001 6,281,918'Laser printhead mounting apparatus and printhead skew adjustment mechanism for an electrophotographic machine'2001 6,262,753'Electrophotographic imaging apparatus with reduced packaging size'2001 6,199,990'Rotatable mirror assembly for optical path reversal in a laser scanning machine'2001 6,169,860'Toner cartridge having encoded wheel'2001 6,160,073'Sealant materials for toner cartridges'2000 6,009,285'Method for determining characteristics of an electrophotographic cartridge carrying a rotatable element'1999 5,995,772'Imaging apparatus cartridge including an encoded device'1999 5,970,275'Dynamic supply usage estimation'1999 5,952,442'Sealant materials for toner cartridges'1999 D0399249'Toner cartridge for laser printer'1998 5,802,420'Method and apparatus for predicting and displaying toner usage of a printer'1998 5,758,231'Venting plug in toner cartridge'1998 5,634,169'Multiple function encoder wheel for cartridges utilized in an electrophotographic output device'1997 5,365,315'Imaging device with cartridge and lid interaction'1994 5,337,032'Reduced component toner cartridge'1994 5,331,378'Toner cartridge with independent driven systems'1994 4,422,040'Method of testing stepping motors'1983

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1983Patents assigned to IBM (1)· patent assignee history

1983–1994Based in Lexington, KY, US· patent location history

1994–2008Patents assigned to LEXMARK INT INC (28)· patent assignee history

1997–2008Based in Richmond, KY, US· patent location history

1999Based in Rchmond, KY, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
LEXMARK INT INC	28	1994–2008
IBM	1	1983

Locations

Location	Patents	Span
Richmond, KY, US	24	1997–2008
Lexington, KY, US	4	1983–1994
Rchmond, KY, US	1	1999