Mark Alan Johnstone

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Lebanon, OR, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of making a tunneling emitter
- Patent number 7,044,823
- Issue date May 16, 2006
- Hewlett-Packard Development Company, L.P.
- Zhizhang Chen
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of fabricating a fluid jet printhead
- Patent number 6,785,956
- Issue date Sep 7, 2004
- Hewlett-Packard Development Company, L.P.
- Genbao Xu
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Annealed tunneling emitter
- Patent number 6,781,146
- Issue date Aug 24, 2004
- Hewlett-Packard Development Company, L.P.
- Zhizhang Chen
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Fluid-jet printhead and method of fabricating a fluid-jet printhead
- Patent number 6,457,814
- Issue date Oct 1, 2002
- Hewlett-Packard Company
- Genbao Xu
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Patents Applicationslast 30 patents

Information Patent Application
Tunneling emitter
- Publication number 20040222729
- Publication date Nov 11, 2004
- Zhizhang Chen
- B82 - NANO-TECHNOLOGY
Information Patent Application
Method of making a tunneling emitter
- Publication number 20040211975
- Publication date Oct 28, 2004
- Zhizhang Chen
- B82 - NANO-TECHNOLOGY
Information Patent Application
ANNEALED TUNNELING EMITTER
- Publication number 20020167001
- Publication date Nov 14, 2002
- Zhizhang Chen
- B82 - NANO-TECHNOLOGY
Information Patent Application
Fluid-jet printhead and method of fabricating a fluid-jet printhead
- Publication number 20020135640
- Publication date Sep 26, 2002
- Zhizang Chen
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Fluid-jet printhead and method of fabricating a fluid-jet printhead
- Publication number 20020075346
- Publication date Jun 20, 2002
- Genbao Xu
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS