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Joy Roy
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Beaverton, OR, US
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last 30 patents
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Patent Grant
Method of operating an ink jet to reduce print quality degradation...
Patent number
5,381,162
Issue date
Jan 10, 1995
Tektronix, Inc.
Joy Roy
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Method of operating an ink jet to achieve high print quality and hi...
Patent number
5,170,177
Issue date
Dec 8, 1992
Tektronix, Inc.
Douglas M. Stanley
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Method of operating an ink jet to reduce print quality degradation...
Patent number
5,155,498
Issue date
Oct 13, 1992
Tektronix, Inc.
Joy Roy
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Method and apparatus for printing with ink drops of varying sizes u...
Patent number
5,124,716
Issue date
Jun 23, 1992
Tektronix, Inc.
Joy Roy
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Drop-on-demand ink jet print head
Patent number
5,087,930
Issue date
Feb 11, 1992
Tektronix, Inc.
Joy Roy
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Manufacture of ink jet print heads by diffusion bonding and brazing
Patent number
4,883,219
Issue date
Nov 28, 1989
Jeffrey J. Anderson
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Air assisted ink jet head with single compartment ink chamber
Patent number
4,728,969
Issue date
Mar 1, 1988
Tektronix, Inc.
Hue P. Le
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS